# Best Email Deliverability Tools for Small Business - Page 4

## How Many Email Deliverability Tools Products Does G2 Track?

**Total Products under this Category:** 226

### Category Stats (Aug 2026)

- **Average Rating:** 4.53/5 (↑0.01 vs Jul 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** E-Warmup (+5.56%) - Among all products in this category, E-Warmup recorded the largest rating increase compared to last month

_Last updated: August 03, 2026_

## How Does G2 Rank Email Deliverability Tools Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 72,000+ Authentic Reviews
- 226+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for Email Deliverability Tools
 ![G2 Grid® for Email Deliverability Tools plotting products by satisfaction and market presence](https://www.g2.com/categories/email-deliverability/grids.png?focus%5B%5D=933&focus%5B%5D=166877&focus%5B%5D=157194&focus%5B%5D=19743&focus%5B%5D=3435&focus%5B%5D=22329&focus%5B%5D=91817&focus%5B%5D=673)

Highlighted products: Constant Contact, Instantly, Warmy, Apollo.io, Brevo Marketing Platform, Klaviyo, lemlist, and Intuit Mailchimp Email Marketing.

Underlying data: [Grid® JSON](https://www.g2.com/categories/email-deliverability/grids.json?focus%5B%5D=constant-contact&focus%5B%5D=instantly&focus%5B%5D=warmy&focus%5B%5D=apollo-io&focus%5B%5D=brevo-marketing-platform&focus%5B%5D=klaviyo&focus%5B%5D=lemlist&focus%5B%5D=intuit-mailchimp-email-marketing&segment=small-business)

**Sponsored**

### Campaign Monitor

Campaign Monitor is a simple yet powerful email marketing solution designed to help users create, manage, and optimize their email campaigns. This tool is tailored for marketers seeking to enhance their communication with subscribers through visually appealing and personalized emails. By focusing on user-friendly features, Campaign Monitor empowers individuals and teams to effectively engage their audience and drive conversions without needing extensive technical skills. This email marketing platform is particularly beneficial for small to medium-sized businesses, non-profits, marketing agencies, IT agencies, and marketing teams that prioritize building strong relationships with their subscribers. With its intuitive interface and robust functionality, Campaign Monitor caters to a diverse range of users, from those just starting in email marketing to seasoned professionals looking for efficient ways to streamline their campaigns. The platform's design is centered around making email marketing accessible, enabling users to focus on crafting compelling messages rather than getting bogged down by technical complexities. Key features of Campaign Monitor include a library of beautiful email templates, a drag-and-drop email builder, and engagement-based segmentation tools. The pre-designed templates allow users to create visually striking emails that reflect their brand identity, while the drag-and-drop builder simplifies the process of customizing layouts and content. This means that even users with minimal design experience can produce professional-quality emails that resonate with their audience. Engagement-based segmentation further enhances the effectiveness of campaigns by allowing marketers to tailor their content based on subscriber behavior and preferences, ensuring that the right message reaches the right audience at the right time. In addition to these features, Campaign Monitor offers comprehensive analytics and reporting tools that provide insights into campaign performance. Users can track open rates, click-through rates, and other key metrics, enabling them to refine their strategies and improve future campaigns. This data-driven approach helps marketers understand what resonates with their audience, allowing for continuous improvement and increased engagement over time. Overall, Campaign Monitor stands out in the email marketing category by combining ease of use with powerful features that facilitate effective communication. Its focus on personalization, design, and analytics makes it a valuable tool for any organization looking to enhance its email marketing efforts and foster lasting relationships with subscribers.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=paid_promo&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1392&secure%5Bchosen_at%5D=2026-08-04T03%3A26%3A36Z&secure%5Bmedium%5D=sponsored&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1621&secure%5Bresource_id%5D=1392&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Femail-deliverability%2Fsmall-business%3Fpage%3D4&secure%5Btoken%5D=6964dfeacaee69f5d7d975d0e2c82675420093196375599c9b3e5cced8058b9a&secure%5Burl%5D=https%3A%2F%2Fwww.campaignmonitor.com%2Ffeatures%2F&secure%5Burl_type%5D=paid_promos)

### [SparkPost](https://www.g2.com/products/sparkpost/reviews)

SparkPost is the world’s #1 email infrastructure provider and the most performant email delivery service available. Our customers send over 5 trillion messages a year, over 37 percent of the world’s business email. Several SparkPost customers—including the largest social networks—send over a billion emails a day, making us the fastest-growing email delivery service provider on the market. For more than a decade, we’ve developed the leading technology in the email industry and the first email delivery service truly architected for the cloud. From the finely-tuned Momentum MTA to today’s fully elastic cloud email delivery service, we provide our customers with proven highest inbox delivery rates, easy setup and launch, and the most comprehensive analytics and insight. Built on the AWS platform, we give our customers the reliability and scalability they demand—and more. There’s never been a better way to send email. Our technology is powerful, but SparkPost’s most valuable asset is our people—the most talented and experienced email experts in the industry. From deliverability experts to a community of developers to dedicated Technical Account Managers for enterprise customers, our team is there with you every step of the way. Whether you are just starting out building an app; a large, complex enterprise; or somewhere in between, there’s a SparkPost service to match your email delivery needs.

**Average Rating:** 4.0/5.0

**Total Reviews:** 71

#### How Do G2 Users Rate SparkPost?

- **Has the product been a good partner in doing business?:** 7.5/10 (Category avg: 9.0/10)
- **Campaign Performance:** 5.7/10 (Category avg: 8.8/10)
- **Content :** 6.7/10 (Category avg: 8.8/10)
- **Brand Reputation:** 6.1/10 (Category avg: 8.8/10)

#### Who Is the Company Behind SparkPost?

- **Seller:** [SparkPost](https://www.g2.com/sellers/sparkpost-c9ab5338-2592-4c25-a156-b1c658cf1362)
- **HQ Location:** Columbia, Maryland
- **Twitter:** @SparkPost  
13,252 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=72ec7d9421d4ae24fa388fa41738362f3bf4c6ed229ec7f1e447f65ff066d123&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsparkpost%2Fabout&secure%5Burl_type%5D=linkedin_company_website)  
28 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Internet, Information Technology and Services
- **Company Size:** 49% Small, 27% Medium

#### What Do G2 Reviewers Say About SparkPost?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **quick and helpful support team** of SparkPost, enhancing their experience with the easy platform.
- Users enjoy the **ease of use** of SparkPost, complemented by a responsive support team for quick assistance.

##### Cons

- Users report delays from CSM and struggle with emails landing in **spam folders** , impacting communication effectiveness.
- Users express frustration with **poor customer support** , particularly regarding delays and spam-related issues.
- Users are frustrated with the **time delays** from CSM and issues in identifying emails landing in spam.

#### What Are Recent G2 Reviews of SparkPost?

**["Effortless Platform with Responsive Support"](https://www.g2.com/survey_responses/sparkpost-review-12064222)**

**Rating:** 4.0/5.0 stars

_— Anuj G._

[Read full review](https://www.g2.com/survey_responses/sparkpost-review-12064222)

**["More likely Product for Email Marketers"](https://www.g2.com/survey_responses/sparkpost-review-8365987)**

**Rating:** 4.5/5.0 stars

_— Manish G._

[Read full review](https://www.g2.com/survey_responses/sparkpost-review-8365987)

#### What Are G2 Users Discussing About SparkPost?

- [What is spark Post app?](https://www.g2.com/discussions/what-is-spark-post-app)
- [How do you use SparkPost?](https://www.g2.com/discussions/how-do-you-use-sparkpost)
- [What is Sparkpostmail?](https://www.g2.com/discussions/what-is-sparkpostmail)
- [What is SparkPost?](https://www.g2.com/discussions/what-is-sparkpost)

### [Maileroo](https://www.g2.com/de/products/maileroo/reviews)

Maileroo ist eine transaktionale E-Mail-Plattform, die für Entwickler, Gründer und Engineering-Teams entwickelt wurde, die Passwortzurücksetzungen, Quittungen, Benachrichtigungen und andere systemgenerierte E-Mails zuverlässig zustellen müssen, ohne dafür Unternehmenspreise zu zahlen. Sie können über SMTP senden (geben Sie Ihre Anmeldedaten ein und Sie senden in wenigen Minuten) oder über eine saubere REST-API mit SDKs und Copy-Paste-Snippets in den meisten gängigen Sprachen. Beide unterstützen die Dinge, die Sie tatsächlich im Alltag verwenden: HTML- und Klartextkörper, Anhänge, benutzerdefinierte Header, benutzerdefinierte Tags zur Kategorisierung des Traffics, geplantes Senden (RFC 3339-Zeitstempel oder natürliche Sprache wie "in 2 Stunden") und referenzielle IDs pro Nachricht, damit Sie Sendungen mit Ihren eigenen Systemen korrelieren können. Auf der Zustellseite erhalten Sie Echtzeit-Webhooks für Öffnungen, Klicks, Bounces, Beschwerden und Abmeldungen sowie ein Dashboard mit detaillierten Nachrichtenprotokollen, sodass Sie, wenn eine E-Mail nicht ankommt, tatsächlich sehen können, was passiert ist, anstatt auf das Schweigen eines Anbieters zu starren. Dedizierte IPs sind für Sender mit höherem Volumen verfügbar, die die volle Kontrolle über ihren Sende-Ruf haben möchten, und ein geführter DNS-Assistent kümmert sich um die Einrichtung von SPF, DKIM und DMARC, sodass die Authentifizierung kein halbtägiges Projekt ist. Neben dem Senden umfasst Maileroo eine eingehende Parsing-API, um eingehende E-Mails direkt in Ihre Anwendung zu leiten, eine kostenlose E-Mail-Verifizierungs-API, um Listen zu bereinigen, bevor sie Ihrem Ruf schaden, und eine Suite kostenloser Tools: SPF/DMARC-Generatoren, Blacklist-Überwachung, ein Mail-Tester, die nützlich sind, egal ob Sie Kunde sind oder nicht. Die Preisgestaltung basiert auf der Nutzung mit einem großzügigen kostenlosen Tarif. Verbindungen sind TLS-verschlüsselt, Konten sind mit 2FA geschützt und die Plattform ist DSGVO-konform.

**Average Rating:** 4.8/5.0

**Total Reviews:** 16

#### How Do G2 Users Rate Maileroo?

- **Kampagnen-Performance:** 9.2/10 (Category avg: 8.8/10)
- **Inhalt:** 9.2/10 (Category avg: 8.8/10)
- **Reputation der Marke:** 10.0/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Maileroo?

- **Verkäufer:** [Maileroo](https://www.g2.com/de/sellers/maileroo)
- **Gründungsjahr:** 2023
- **Hauptsitz:** Melbourne, AU
- **LinkedIn®-Seite:** [www.linkedin.com](https://www.g2.com/de/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=195669a64c575362822ca10b6e68cc4e97189e28bf7e9c64e2cf331f19fdac72&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmaileroo&secure%5Burl_type%5D=linkedin_company_website)  
5 Mitarbeiter\*innen auf LinkedIn®

#### Who Uses This Product?

- **Company Size:** 81% Small, 6% Large

#### What Do G2 Reviewers Say About Maileroo?

_AI-generated summary from verified user reviews_

##### Pros

- Benutzer schätzen die **einfache Einrichtung** von Maileroo und loben den unkomplizierten Prozess zur Kontoerstellung und Domainhinzufügung.
- Benutzer loben die **Zuverlässigkeit** von Maileroo, das stets eine erfolgreiche E-Mail-Zustellung ohne Probleme gewährleistet.
- Benutzer finden die **Genauigkeit der E-Mail-Zustellung** von Maileroo beeindruckend, was sicherstellt, dass wichtige Nachrichten die Kunden effektiv erreichen.
- Benutzer loben den **schnellen und hilfreichen Kundensupport** von Maileroo, was ihre Gesamterfahrung mit dem Service verbessert.
- Benutzer finden die **Benutzerfreundlichkeit** von Maileroo beeindruckend und genießen eine unkomplizierte Einrichtung sowie hilfreiche Funktionen im Dashboard.

##### Cons

- Benutzer stoßen auf **stündliche Sendelimits** bei Maileroo, die sich während der Spitzenzeiten etwas einschränkend anfühlen können.

#### What Are Recent G2 Reviews of Maileroo?

**["Schnelle, effiziente E-Mail-Lösung mit klaren APIs"](https://www.g2.com/de/survey_responses/maileroo-review-12825500)**

**Rating:** 5.0/5.0 stars

_— Isaac D._

[Read full review](https://www.g2.com/de/survey_responses/maileroo-review-12825500)

**["Es funktioniert einfach: Zuverlässige transaktionale E-Mails mit hervorragendem Zustellungs-Tracking"](https://www.g2.com/de/survey_responses/maileroo-review-12823843)**

**Rating:** 5.0/5.0 stars

_— Andrew S._

[Read full review](https://www.g2.com/de/survey_responses/maileroo-review-12823843)

### [SocketLabs](https://www.g2.com/products/socketlabs/reviews)

SocketLabs is a complete email solution, including both flexible and reliable email delivery and email performance reporting tools. SocketLabs Email allows senders to use either SMTP or API sending mechanisms, Cloud or on-premises servers, and a suite of reporting features, including our proprietary StreamScore, to improve email performance. SocketLabs Spotlight reporting is a new, robust platform with an account-level sending overview so senders can see all of their email activity, then multiple layers of deeper analysis like detailed StreamScore breakdowns, tailored next-step guidance, and up to 13 months of data storage to analyze and monitor performance trends. One email or millions, we give you the reliability, insights, and expert support you need to feel confident your email is in good hands. We have 99.999% uptime and adhere to the highest levels of safety and security standards.

**Average Rating:** 4.5/5.0

**Total Reviews:** 39

#### How Do G2 Users Rate SocketLabs?

- **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 9.0/10)
- **Campaign Performance:** 8.3/10 (Category avg: 8.8/10)
- **Content :** 8.5/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.3/10 (Category avg: 8.8/10)

#### Who Is the Company Behind SocketLabs?

- **Seller:** [SocketLabs](https://www.g2.com/sellers/socketlabs)
- **Year Founded:** 2007
- **HQ Location:** Aston, PA
- **Twitter:** @socketlabs  
1,575 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b9799cb574f31e7cb7b061953a8c048be67646dc658c7b88c5e6b8c8ef75c2af&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1087688%2F&secure%5Burl_type%5D=linkedin_company_website)  
21 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising, Financial Services
- **Company Size:** 68% Small, 24% Medium

#### What Are Recent G2 Reviews of SocketLabs?

**["Great product, easy to use!"](https://www.g2.com/survey_responses/socketlabs-review-4088786)**

**Rating:** 4.5/5.0 stars

_— Verified User in Financial Services_

[Read full review](https://www.g2.com/survey_responses/socketlabs-review-4088786)

**["Great reliable service"](https://www.g2.com/survey_responses/socketlabs-review-5071850)**

**Rating:** 4.0/5.0 stars

_— Verified User in Hospital & Health Care_

[Read full review](https://www.g2.com/survey_responses/socketlabs-review-5071850)

#### What Are G2 Users Discussing About SocketLabs?

- [What does Socketlabs do?](https://www.g2.com/discussions/what-does-socketlabs-do)
- [What are the features of Socketlabs?](https://www.g2.com/discussions/what-are-the-features-of-socketlabs)
- [Is SocketLabs legit?](https://www.g2.com/discussions/is-socketlabs-legit)
- [What is SocketLabs used for?](https://www.g2.com/discussions/what-is-socketlabs-used-for)

### [Clodura.AI](https://www.g2.com/products/clodura-ai/reviews)

Clodura.AI — GenAI Go-to-Market Platform. From Database to Deal Closure. Clodura.AI is a Series A funded GenAI Go-to-Market platform trusted by 73,000+ sales professionals worldwide. It is the only platform that unifies your complete revenue workflow — data, intelligence, AI-powered outreach, calling, and deliverability — without requiring a multi-tool stack. Most GTM teams are paying for four to six tools that don't talk to each other. Clodura.AI was built to replace that stack with one platform that runs the full motion: find the right contacts, understand the buying context, reach out with messages that earn replies, and track outcomes — all in one place. The Database 600M+ verified B2B contacts and 50M+ company profiles with deep organizational intelligence. Emails and mobile numbers verified in real time through integrations with 50+ email providers and 20+ dialer networks — so your team is always working with data that is accurate at the moment of use, not at the moment of export. Email Verifier Every contact unlocked inside Clodura is verified in real time before it reaches the user. Clodura.AI's Email Verifier extends that same engine to externally sourced lists — CRM exports, trade show leads, LinkedIn contacts, purchased databases — without requiring a separate subscription or tool. Two verification tiers: Standard: Covers syntax checks, domain validation, and SMTP verification. Suited for warm databases and existing CRM records. Deep: Adds catch-all domain detection and identification of SEG-protected inboxes (Proofpoint, Mimecast, Barracuda). Built for cold outreach into enterprise accounts where deliverability risk is highest. Single email verification returns results inline. Bulk CSV uploads up to 100MB run through a High Volume pipeline. Both tiers run on existing Clodura credits — no separate invoice, no third-party account to manage. Atlas — Agentic SDR Atlas is Clodura.AI's Agentic SDR. It does not send templates. It writes a completely original email from scratch for every prospect — based on individual research across three intelligence layers. Seller Intelligence: Atlas analyzes your website and offer to build a deep understanding of your value proposition and competitive position before writing a single word. Buyer Company Intelligence: For every target account, Atlas evaluates funding signals, tech stack, hiring patterns, recent news, and leadership changes — identifying genuine buying readiness rather than demographic fit alone. The EQ Engine: Atlas profiles each individual prospect at the psychographic level: negotiation style, communication preferences, technology adoption profile, and career trajectory. A CMO six months into a new role has different priorities than one with five years of tenure. Atlas identifies which is which — and writes accordingly. The training behind Atlas is Atlas University — a four-semester curriculum built on 10 million successful outbound emails, 5 million subject lines, and 100,000+ A/B campaigns. Seven proven sales frameworks (Sandler, Challenger, SPIN, SNAP, Straight Line, and more) are matched to each prospect's psychographic profile at 95% accuracy. Every Atlas sequence follows a structured five-phase cadence: Hook → Value → Proof → Bump → Breakup. Every sequence is reviewed by a human before the full campaign goes live. Your team sees sample emails per prospect, can edit or regenerate any message, and controls what goes out — before a single email reaches an inbox. The results Atlas campaigns consistently deliver: Open rates: 40%+ (industry average: below 10%) Reply rates: 4%+ (industry average: 0.5% — an 8X improvement) 95% Primary inbox placement Every email original — written from scratch per prospect CallPilot — Integrated Dialer CallPilot is Clodura.AI's built-in calling layer. Make calls directly from the platform with local presence dialing, call recording, and activity logging — without switching to a separate dialer. Multi-channel outreach managed in one place, with full visibility on every touchpoint. Deliverability Suite Inbox health is engineered into the platform, not bolted on. Before any campaign goes live: Spam Score — every email is analyzed against dozens of spam filter algorithms and flagged for correction before sending Inbox Placement Testing — campaigns are tested against 250,000+ diverse test inboxes spanning every major email provider and enterprise security configuration Inbox Warmup — domain and mailbox warmup built in to protect sender reputation at scale Exact placement is verified — Primary, Promotions, or Spam — and only campaigns achieving high Primary placement rates proceed to launch. Clodura.AI consistently achieves 95% Primary inbox placement. Pricing and Scale Credit-based pricing with unlimited users. No per-seat tax on team growth. Whether you're a founder running outbound yourself or a RevOps team standardizing a 50-person sales org, the pricing model scales without penalizing headcount. Why GTM Teams Switch to Clodura.AI The typical sales stack costs $15,000–$40,000+ per year across separate tools for data, enrichment, sequencing, calling, and deliverability. Each tool requires its own login, its own integration, its own contract, and its own failure mode. Clodura.AI consolidates that motion into one platform — with a single data layer, a single outreach system, and a single source of truth for pipeline activity. From database to deal closure. All in one platform. Start free: https://www.clodura.ai/app/#/auth/register?utm\_source=G2\_bio&utm\_medium=referral Book a Demo: https://www.clodura.ai/request-demo/?utm\_source=G2\_bio&utm\_medium=referral

**Average Rating:** 4.6/5.0

**Total Reviews:** 333

#### How Do G2 Users Rate Clodura.AI?

- **Has the product been a good partner in doing business?:** 8.5/10 (Category avg: 9.0/10)

#### Who Is the Company Behind Clodura.AI?

- **Seller:** [Clodura](https://www.g2.com/sellers/clodura)
- **Year Founded:** 2015
- **HQ Location:** Baner, Pune, IN
- **Twitter:** @Clodura  
580 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d559a347f45369235933a2713c7559071037030596762137183c3d22dad7b141&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fclodura-systems&secure%5Burl_type%5D=linkedin_company_website)  
97 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Founder, CEO
- **Top Industries:** Information Technology and Services, Marketing and Advertising
- **Company Size:** 65% Small, 25% Medium

#### What Do G2 Reviewers Say About Clodura.AI?

_AI-generated summary from verified user reviews_

##### Pros

- Users find Clodura.AI very **easy to use** , benefitting from reliable data and excellent customer support.
- Users value the **high-quality lead generation** of Clodura.AI, appreciating its efficiency and automation in finding relevant leads.
- Users praise Clodura.AI's **accurate contact information** , appreciating its extensive leads and customization capabilities.
- Users appreciate the **high quality and accuracy of leads** provided by Clodura.AI, enhancing their sales efforts significantly.
- Users appreciate the **powerful search filters** and buyer intent feature in Clodura.AI that enhance sales discussions.

##### Cons

- Users mention a **steep learning curve** that requires time to fully grasp the Clodura.AI platform's functionalities.
- Users express frustration with the **inaccuracy of contact information** , often finding outdated or missing data.
- Users often face issues with **outdated information** , leading to inaccuracies and the need for frequent customer service support.
- Users feel the **missing features** like limited CRM integration and basic search hinder their overall experience with Clodura.AI.
- Users report **outdated data** in Clodura.AI, leading to inaccuracies and a high bounce rate in communications.

#### What Are Recent G2 Reviews of Clodura.AI?

**["Leveraging Clodura Intent Data To Speed Up IT & Cybersecurity Pipeline Development"](https://www.g2.com/survey_responses/clodura-ai-review-13065151)**

**Rating:** 5.0/5.0 stars

_— Corey M._

[Read full review](https://www.g2.com/survey_responses/clodura-ai-review-13065151)

**["Great tool for generating CRM and consulting tech leads with high intent"](https://www.g2.com/survey_responses/clodura-ai-review-13068536)**

**Rating:** 5.0/5.0 stars

_— Arthur A._

[Read full review](https://www.g2.com/survey_responses/clodura-ai-review-13068536)

#### What Are G2 Users Discussing About Clodura.AI?

- [What is Clodura.AI used for?](https://www.g2.com/discussions/what-is-clodura-ai-used-for) - 1 comment

### [Mission Inbox](https://www.g2.com/products/mission-inbox/reviews)

Mission Inbox is a B2B software company founded in 2024 by Anthony Baltodano and Steve Baltodano that provides email infrastructure and deliverability solutions for businesses. The company offers technology for outbound sales and marketing email, transactional email delivery, sender reputation management, email authentication, and delivery monitoring. Its platform is designed to help organizations manage and scale email communications across customer engagement, marketing, and product operations. Mission Inbox is an outreach-friendly email infrastructure platform built for businesses that take deliverability seriously. Shared-IP providers that ban cold email and pool your reputation with spammers, Mission Inbox gives you fully isolated servers for workload, so your sales outreach, marketing campaigns, transactional receipts, and financial emails never interfere with each other. Every account includes MI Shield™, an AI-powered layer that scans emails before they are sent, automatically blocking anything that appears to be spam to protect your domain reputation. Setup takes under 5 minutes with automated DNS configuration, instant warmup, and one-click sender authentication. No deliverability consultants required. Whether you're a developer, sales team, marketer, or enterprise, Mission Inbox gives you the dedicated IPs, compliance tools, and full infrastructure transparency to land in the inbox every time.

**Average Rating:** 4.9/5.0

**Total Reviews:** 13

#### How Do G2 Users Rate Mission Inbox?

- **Campaign Performance:** 9.6/10 (Category avg: 8.8/10)
- **Brand Reputation:** 10.0/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Mission Inbox?

- **Seller:** [Mission Inbox](https://www.g2.com/sellers/mission-inbox)
- **Year Founded:** 2024
- **HQ Location:** San Francisco, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=26e8327755dca0cfcc4746ccfc6e5a7cb4e9a99cbaf71a1c0609c61b0e8e58c8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmissioninbox%2F&secure%5Burl_type%5D=linkedin_company_website)  
12 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

#### What Are Recent G2 Reviews of Mission Inbox?

**["Reliable email infrastructure with strong deliverability"](https://www.g2.com/survey_responses/mission-inbox-review-12650372)**

**Rating:** 5.0/5.0 stars

_— Joan Carles S._

[Read full review](https://www.g2.com/survey_responses/mission-inbox-review-12650372)

**["Effective B2B Outreach with Room for Improvement"](https://www.g2.com/survey_responses/mission-inbox-review-12666814)**

**Rating:** 4.0/5.0 stars

_— Theo ._

[Read full review](https://www.g2.com/survey_responses/mission-inbox-review-12666814)

### [TrulyInbox](https://www.g2.com/products/trulyinbox/reviews)

TrulyInbox is the email warm-up tool that interacts with your inbox in a human way to improve your sender’s reputation. https://www.trulyinbox.com/

**Average Rating:** 4.2/5.0

**Total Reviews:** 44

#### How Do G2 Users Rate TrulyInbox?

- **Has the product been a good partner in doing business?:** 9.4/10 (Category avg: 9.0/10)
- **Campaign Performance:** 5.2/10 (Category avg: 8.8/10)
- **Content :** 5.3/10 (Category avg: 8.8/10)
- **Brand Reputation:** 4.7/10 (Category avg: 8.8/10)

#### Who Is the Company Behind TrulyInbox?

- **Seller:** [TrulyInbox](https://www.g2.com/sellers/trulyinbox)
- **HQ Location:** New Delhi, IN
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5b3bb57e550a9c5fb9fecdaf34d148fddbcd307720bff0ab2dbd465fa648e33b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftrulyinbox%2F&secure%5Burl_type%5D=linkedin_company_website)  
4 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising
- **Company Size:** 84% Small, 5% Medium

#### What Do G2 Reviewers Say About TrulyInbox?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **ease of use** of TrulyInbox, enjoying its simplicity and effective email deliverability.
- Users appreciate the **easy setup** of TrulyInbox, allowing quick access and a smooth onboarding experience.
- Users find that TrulyInbox offers **effective and affordable email warm-up** without unnecessary features, improving their spam reputation.
- Users find TrulyInbox to be **affordable** and effective, serving their email warm-up needs without unnecessary costs.
- Users appreciate the **quick customer support** of TrulyInbox, noting its ease of use and immediate results.

##### Cons

- Users report **email issues** with glitches and the lack of full email service functionality in TrulyInbox.
- Users find the **learning curve steep** due to insufficient SMTP setup guidance and slow setup processes.
- Users report **poor customer support** from TrulyInbox, making account integration frustrating and disappointing.
- Users find the **insufficient training** on SMTP setup lacking, which complicates their experience with TrulyInbox.
- Users find the **lack of detailed reporting** frustrating, as it limits their analytic capabilities.

#### What Are Recent G2 Reviews of TrulyInbox?

**["Easy-to-Use Email Warm-Up with a Smooth, Gradual Ramp-Up"](https://www.g2.com/survey_responses/trulyinbox-review-13126854)**

**Rating:** 4.5/5.0 stars

_— Aaron B._

[Read full review](https://www.g2.com/survey_responses/trulyinbox-review-13126854)

**["TrulyInbox Makes Email Warm-Up Easy, Informative, and Affordable"](https://www.g2.com/survey_responses/trulyinbox-review-13140488)**

**Rating:** 4.5/5.0 stars

_— Danielle Q._

[Read full review](https://www.g2.com/survey_responses/trulyinbox-review-13140488)

### [Luella](https://www.g2.com/de/products/luella/reviews)

Luella's Deliverability Agent ist eine KI-gestützte Lösung, die entwickelt wurde, um die Zustellbarkeit von E-Mails zu verbessern, indem sie den Ruf des Absenders schützt und sicherstellt, dass Nachrichten konsequent die Posteingänge der Empfänger erreichen. Durch proaktives Überwachen der Posteingangsplatzierung und Verhindern, dass E-Mails als Spam markiert werden, hilft Luella Organisationen, effektive Kommunikationskanäle aufrechtzuerhalten. Hauptmerkmale und Funktionalität: - Schützt die Versandinfrastruktur: Nutzt dedizierte IP-Cluster, um Absender von potenziellen Spam-Risiken zu isolieren und sicherzustellen, dass E-Mails über vertrauenswürdige Server geleitet werden, die den Ruf der Domain wahren. - Überwacht die Zustellbarkeit und sendet Echtzeit-Benachrichtigungen: Führt Ad-hoc-Tests zur Posteingangsplatzierung durch und überwacht kontinuierlich die Versandgesundheit, indem es Echtzeit-Benachrichtigungen mit umsetzbaren Schritten zur Behebung von Problemen bereitstellt, bevor diese die Leistung beeinträchtigen. - Simuliert natürliche Postfachaktivitäten: Erstellt authentische Interaktionen und Browseraktionen zwischen realen Unternehmenspostfächern, um Glaubwürdigkeit bei E-Mail-Anbietern aufzubauen, und balanciert Versand- und Antwortraten aus, um rote Flaggen zu vermeiden. - Skaliert das ausgehende Volumen sicher: Verteilt das E-Mail-Volumen über mehrere isolierte Postfächer, jedes mit maßgeschneiderter Aufwärmlogik, IP-Rotation und laufender Reputationsüberwachung, was eine sichere Skalierung der ausgehenden Kommunikation ermöglicht. Primärer Wert und Benutzerlösungen: Luella's Deliverability Agent adressiert die kritische Herausforderung der E-Mail-Zustellbarkeit, indem er den Ruf des Absenders proaktiv verwaltet und schützt. Indem er sicherstellt, dass E-Mails in den Posteingängen der Empfänger und nicht in den Spam-Ordnern landen, verbessert er die Kommunikationseffektivität, unterstützt Vertriebs- und Marketingbemühungen und bewahrt die Integrität von Outreach-Kampagnen. Diese Lösung ist besonders wertvoll für Organisationen, die hohe Engagement-Raten aufrechterhalten und die Fallstricke vermeiden möchten, die mit schlechter E-Mail-Zustellbarkeit verbunden sind.

**Average Rating:** 4.8/5.0

**Total Reviews:** 12

#### How Do G2 Users Rate Luella?

- **War the product ein guter Geschäftspartner?:** 10.0/10 (Category avg: 9.0/10)
- **Kampagnen-Performance:** 9.6/10 (Category avg: 8.8/10)
- **Inhalt:** 9.2/10 (Category avg: 8.8/10)
- **Reputation der Marke:** 9.4/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Luella?

- **Verkäufer:** [Luella](https://www.g2.com/de/sellers/luella)
- **Gründungsjahr:** 2024
- **Hauptsitz:** Toronto, CA
- **LinkedIn®-Seite:** [www.linkedin.com](https://www.g2.com/de/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=3ceb024e7fba5b759ce4aced0255ac8d72edebc6048c38b2e11b0e88db0bf02a&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fluella-ai&secure%5Burl_type%5D=linkedin_company_website)  
8 Mitarbeiter\*innen auf LinkedIn®

#### Who Uses This Product?

- **Company Size:** 83% Small, 8% Large

#### What Do G2 Reviewers Say About Luella?

_AI-generated summary from verified user reviews_

##### Pros

- Benutzer profitieren von der **zeitsparenden Effizienz** von Luella, indem sie schnell mit wertvollen Interessenten in Kontakt treten und Prozesse optimieren.
- Benutzer finden die **einfache Einrichtung** von Luella unschätzbar, um die Zustellbarkeit von E-Mails zu verbessern und schnell mit wertvollen Interessenten in Kontakt zu treten.
- Benutzer finden Luellas **intuitives E-Mail-Warmup** -System effektiv, um das Domainvertrauen zu verbessern und Spam-Probleme zu verhindern.
- Benutzer loben Luella für seine **überlegene Zustellbarkeit** und außergewöhnlichen Support, was ihren Outreach-Erfolg erheblich steigert.
- Benutzer schätzen die **effektive Lead-Generierung** von Luella und bemerken erfolgreiche Verbindungen mit hochkarätigen Interessenten in kurzer Zeit.

##### Cons

- Benutzer bemerken einige **fehlende Funktionen** , schätzen jedoch die klare Kommunikation über bevorstehende Verbesserungen.
- Benutzer finden Luella **nicht intuitiv** im Vergleich zu anderen Plattformen, aber laufende Verbesserungen helfen, Bedenken hinsichtlich der Benutzerfreundlichkeit zu verringern.
- Benutzer haben **lange Ladezeiten** während der Einrichtung und Aufwärmphasen, was ihre Gesamterfahrung mit Luella beeinträchtigt.
- Benutzer erleben **langsame Leistung** mit Luella, da Einrichtung und Aufwärmübungen länger dauern als erwartet.
- Benutzer finden, dass die **Einrichtungs- und Aufwärmprozesse zeitaufwändig sind** , was ihre Gesamterfahrung mit Luella beeinträchtigt.

#### What Are Recent G2 Reviews of Luella?

**["Interessanter neuer Ansatz für die externe Kontaktaufnahme"](https://www.g2.com/de/survey_responses/luella-review-11219076)**

**Rating:** 5.0/5.0 stars

_— Desmond l._

[Read full review](https://www.g2.com/de/survey_responses/luella-review-11219076)

**["Endlich eine Plattform, die die Zustellbarkeit auf die richtige Weise schützt."](https://www.g2.com/de/survey_responses/luella-review-11024021)**

**Rating:** 5.0/5.0 stars

_— Oriol S._

[Read full review](https://www.g2.com/de/survey_responses/luella-review-11024021)

### [Emma](https://www.g2.com/products/emma/reviews)

Emma is a powerful email marketing platform designed to help organizations automate and personalize campaigns while maintaining brand consistency across teams, locations, and departments. Built with an intuitive interface, Emma enables marketers, especially in higher education, nonprofits, franchises, and growing businesses, to create high-impact engagement with minimal effort. Seamlessly integrating with existing tech stacks, Emma ensures every campaign stays consistent, compliant, and on-brand through robust controls, flexible user permissions, and reliable integrations. Backed by over 20 years of combined expertise, the Emma team supports customers at every stage with on-demand training, guided tutorials, and strategic insights—empowering teams to streamline workflows, maximize value, and drive stronger results.

**Average Rating:** 4.0/5.0

**Total Reviews:** 537

#### How Do G2 Users Rate Emma?

- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 9.0/10)
- **Campaign Performance:** 8.1/10 (Category avg: 8.8/10)
- **Content :** 7.5/10 (Category avg: 8.8/10)
- **Brand Reputation:** 7.1/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Emma?

- **Seller:** [Marigold](https://www.g2.com/sellers/marigold-a8361ce6-777b-44ee-9300-b69d5ed350d6)
- **Company Website:** meetmarigold.com
- **Year Founded:** 2017
- **HQ Location:** Nashville, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c4ee6a9c638f174c78fb8886eaafd45877449d056d9d49103505a285e407ce9b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmeet-marigold&secure%5Burl_type%5D=linkedin_company_website)  
979 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Marketing Director, Marketing Coordinator
- **Top Industries:** Marketing and Advertising, Higher Education
- **Company Size:** 49% Small, 36% Medium

#### What Do G2 Reviewers Say About Emma?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **ease of use** of Emma, citing its user-friendly interface and straightforward setup.
- Users appreciate the **easy creation** feature of Emma, enabling effortless professional campaigns for non-experts with intuitive tools.
- Users appreciate the **intuitive design and powerful automation** of Emma, making email marketing campaigns easy and efficient.
- Users appreciate the **intuitive design and robust segmentation tools** of Emma, enabling effortless campaign creation and delivery.
- Users appreciate the **simple operation** of Emma, enhancing efficiency in managing and automating email campaigns.

##### Cons

- Users find Emma's **limited features** restrictive, lacking advanced analytics, customization, and automation capabilities.
- Users find the **missing features** in Emma, such as custom dashboards and advanced automation, frustrating and limiting.
- Users find the **template limitations** in Emma restrictive, impacting their ability to customize effectively for their needs.
- Users find the **pricing too high** , making it less accessible for small businesses and budget-conscious users.
- Users find **limitations in reporting depth and integration flexibility** with Emma, hindering advanced analytics and workflow efficiency.

#### What Are Recent G2 Reviews of Emma?

**["Easy Template Creation and Customization"](https://www.g2.com/survey_responses/emma-review-12700919)**

**Rating:** 4.5/5.0 stars

_— Bailey F._

[Read full review](https://www.g2.com/survey_responses/emma-review-12700919)

**["Streamlined Partner Messaging with Subaccounts, Templates and Consistent Branding"](https://www.g2.com/survey_responses/emma-review-12627740)**

**Rating:** 5.0/5.0 stars

_— Carolyn S._

[Read full review](https://www.g2.com/survey_responses/emma-review-12627740)

#### What Are G2 Users Discussing About Emma?

- [Who owns Emma Inc?](https://www.g2.com/discussions/who-owns-emma-inc)
- [How much does Emma cost?](https://www.g2.com/discussions/how-much-does-emma-cost)
- [What is Emma Email Marketing?](https://www.g2.com/discussions/what-is-emma-email-marketing)
- [What is my Emma?](https://www.g2.com/discussions/what-is-my-emma)

### [SMTP.com](https://www.g2.com/products/smtp-com/reviews)

SMTP’s relay service infrastructure can solve your delivery issues — quickly. We maximize the number of emails that reach recipients’ inboxes by using our own IP addresses and monitoring your emails for anti-SPAM compliance. By improving your deliverability you’ll see improved ROI. Engagement rates will increase and you can use your resources more efficiently - to get the highest return on every marketing dollar you spend. To ensure the best deliverability, our Responsive Delivery system constantly monitors bounce rates and adjusts the parameters of your email delivery to ensure that your bounce and complaint rates stay at a minimum. SMTP’s relay services are as easy to use as they are effective. Our cloud-based service for email delivery enables you to easily begin using the service without the need for additional hardware or software.You control all aspects of your sending and can review your campaign statistics through your dashboard. With SMTP's Relay Services, you get: -Superior deliverability: Our experts closely examine your unique needs and serve as your guide and “interpreter” for ISPs that may be blocking your delivery. -FREE 24/7 support: You have unlimited access to phone, chat and email support, and a dedicated team of specialists will work to ensure all your service needs are met. -No contract: You can sign up month to month and try out our service. Our terms are highly flexible, so you can downgrade or upgrade your account anytime at no risk. Relay Service Features: -White-listed IP addresses -Email authentication -Proactive monitoring systems -ISP feedback loops -Shared or dedicated IP addresses -Email delivery rates consistently in the 90th percentile -Robust analytics and reporting -Email delivery statistics, including bounce rates & delivery confirmation -Flexible API: Integration for IT and Developers SMTP’s cloud-based service also includes an SMTP API, enabling IT professionals and developers to easily integrate web applications based upon the cloud platforms.

**Average Rating:** 3.3/5.0

**Total Reviews:** 42

#### How Do G2 Users Rate SMTP.com?

- **Has the product been a good partner in doing business?:** 6.2/10 (Category avg: 9.0/10)
- **Campaign Performance:** 7.8/10 (Category avg: 8.8/10)
- **Content :** 7.8/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.0/10 (Category avg: 8.8/10)

#### Who Is the Company Behind SMTP.com?

- **Seller:** [Ziff Davis](https://www.g2.com/sellers/ziff-davis)
- **Company Website:** www.ziffdavis.com
- **Year Founded:** 1995
- **HQ Location:** New York
- **Twitter:** @ziffdavis  
1,426 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=f604f93327beaf881116f44da9d5e2af34a847a06bc4eef7e73326edeb4d40e4&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fziff-davis-inc%2F&secure%5Burl_type%5D=linkedin_company_website)  
6,678 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising, Information Technology and Services
- **Company Size:** 64% Small, 33% Medium

#### What Are Recent G2 Reviews of SMTP.com?

**["The Best Email Spam Filter"](https://www.g2.com/survey_responses/smtp-com-review-9167916)**

**Rating:** 4.5/5.0 stars

_— Sathish K._

[Read full review](https://www.g2.com/survey_responses/smtp-com-review-9167916)

**["High Deliverability, Mixed Bag Customer Service"](https://www.g2.com/survey_responses/smtp-com-review-9115256)**

**Rating:** 5.0/5.0 stars

_— Pratik K._

[Read full review](https://www.g2.com/survey_responses/smtp-com-review-9115256)

#### What Are G2 Users Discussing About SMTP.com?

- [What is SMTP.com used for?](https://www.g2.com/discussions/what-is-smtp-com-used-for)

### [Campayn](https://www.g2.com/products/campayn/reviews)

Campayn allows you to create, share and track newsletters and marketing emails.

**Average Rating:** 4.3/5.0

**Total Reviews:** 141

#### How Do G2 Users Rate Campayn?

- **Has the product been a good partner in doing business?:** 7.9/10 (Category avg: 9.0/10)
- **Campaign Performance:** 9.0/10 (Category avg: 8.8/10)
- **Content :** 9.0/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.9/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Campayn?

- **Seller:** [Campayn](https://www.g2.com/sellers/campayn)
- **Year Founded:** 2011
- **HQ Location:** Toronto, Canada
- **Twitter:** @campayn  
3,324 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=26cce58eeb5559e7b04a7e9f34dfd83e9ccab9358ab1a82257782df12f90925e&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1252078%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Marketing Manager, Marketing Specialist
- **Top Industries:** Marketing and Advertising, Information Technology and Services
- **Company Size:** 56% Medium, 36% Small

#### What Do G2 Reviewers Say About Campayn?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **ease of use** of Campayn, enjoying its user-friendly interface and efficient communication tools.
- Users love the **automation capabilities** of Campayn, making bulk email management and client tracking effortless.
- Users find the **call automation** feature of Campayn effective for quick and efficient client communication.
- Users benefit from **instant and quick communication** with clients, enhancing their email marketing and management efforts.
- Users appreciate the **quick customer support** for prompt resolutions, enhancing their overall experience with Campayn.

##### Cons

- Users note that **data import is time-consuming** , impacting efficiency and engagement opportunities within Campayn.
- Users find the **email integration process slow** and affected by frequent SDK version updates, leading to delays.
- Users note that **integration issues** arise due to frequent SDK updates, causing delays in uploading segments.
- Users find the **slow loading times** frustrating, particularly during uploads and integrations, impacting their workflow.
- Users find the **tool limitations** frustrating, particularly with slow uploads and frequent integration updates affecting functionality.

#### What Are Recent G2 Reviews of Campayn?

**["User-Friendly Platform with Fast Support and Powerful Features"](https://www.g2.com/survey_responses/campayn-review-12068918)**

**Rating:** 4.5/5.0 stars

_— Verified User in Financial Services_

[Read full review](https://www.g2.com/survey_responses/campayn-review-12068918)

**["Email Designing Tool"](https://www.g2.com/survey_responses/campayn-review-9444956)**

**Rating:** 4.0/5.0 stars

_— Yash S._

[Read full review](https://www.g2.com/survey_responses/campayn-review-9444956)

#### What Are G2 Users Discussing About Campayn?

- [What is Campayn used for?](https://www.g2.com/discussions/what-is-campayn-used-for)

### [Inboxy](https://www.g2.com/products/inboxy/reviews)

Land emails in the inbox effortlessly so you can close more deals. The only inbox warm-up solution that utilizes a private network of headless browsers and AI to guarantee better deliverability. Our IP Warm Up service offers several distinct benefits that separate us from other market solutions. Headless Management We track your domain’s reputation metrics and compare against our database of domains to ensure you always achieve better email deliverability. Domain Score IQ We track your domain’s reputation metrics and compare against our database of domains to ensure you always achieve better email deliverability. Enhance Email Deliverability Our proprietary technology ensures that your emails are optimized for maximum deliverability. By analyzing and tailoring your email parameters, we guarantee that your messages reach their intended recipients without being flagged as spam. Increase Email Open Rates We employ advanced AI-driven algorithms to craft compelling subject lines and content, driving higher engagement with your emails. Our unique approach ensures more eyes on your messages and a significant boost in open rates. High Volume Email IP Warm Up Handling a large volume of emails? Our scalable IP warm-up service allows for the seamless handling of high email volumes, ensuring each one is effectively warmed up without losing personal touch or ending up in spam folders. Email Reputation Management Your email reputation is vital for successful communication. Our continuous monitoring and proactive adjustments keep your email reputation in the green, preventing blacklisting and ensuring uninterrupted email performance.

**Average Rating:** 4.6/5.0

**Total Reviews:** 23

#### How Do G2 Users Rate Inboxy?

- **Has the product been a good partner in doing business?:** 8.8/10 (Category avg: 9.0/10)
- **Campaign Performance:** 9.3/10 (Category avg: 8.8/10)
- **Content :** 8.9/10 (Category avg: 8.8/10)
- **Brand Reputation:** 9.2/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Inboxy?

- **Seller:** [Vendisys Inc.](https://www.g2.com/sellers/vendisys-inc)
- **Year Founded:** 2021
- **HQ Location:** San Francisco, CA
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=48bdfd688b74f8d926cd051fc5a2f765ae147ca4c28f1fadfab47051907a9432&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fgetboostrio%2F&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising, Information Technology and Services
- **Company Size:** 61% Small, 26% Medium

#### What Are Recent G2 Reviews of Inboxy?

**["Safely rely on this for your email outreach projects"](https://www.g2.com/survey_responses/inboxy-review-9529770)**

**Rating:** 5.0/5.0 stars

_— Zubin A._

[Read full review](https://www.g2.com/survey_responses/inboxy-review-9529770)

**["The only way to scale outbound emailing with true control"](https://www.g2.com/survey_responses/inboxy-review-9531031)**

**Rating:** 5.0/5.0 stars

_— Don C._

[Read full review](https://www.g2.com/survey_responses/inboxy-review-9531031)

#### What Are G2 Users Discussing About Inboxy?

- [What is Inboxy used for?](https://www.g2.com/discussions/what-is-inboxy-used-for)

### [MailUp](https://www.g2.com/products/mailup/reviews)

MailUp is a simple and scalable solution to create, automate and customize Email, SMS, and Messaging Apps marketing campaigns. Trusted by 10,000+ customers worldwide, it offers advanced automation features and best-of-breed technology for your marketing strategies. A complete solution for multichannel marketing needs: newsletters, transactional emails, subscription forms, landing pages, promotions, SMS, Messaging Apps (Facebook Messenger and Telegram), and much more! Try its drag & drop email builder, integrate your marketing stack, create automated multichannel workflows in a matter of seconds and monitor your campaign performances through in-depth reports. Italian by birth, international by vocation. Established in 2003, over the years MailUp has grown to become the market leader in Italy and to operate in over 50 countries, with 5 branches worldwide. Over 10,000 companies across the globe trust MailUp as a strategic partner for their Digital Marketing activities. MailUp offers the best infrastructure and international certifications to ensure maximum deliverability to your messages. Its powerful messaging platform is complemented by a range of tools to help your day-to-day marketing campaigns run smoothly. Its teams at the technology hubs in Cremona (Italy) and Silicon Valley are at the forefront of flexible, scalable, integrated software development.

**Average Rating:** 3.7/5.0

**Total Reviews:** 41

#### How Do G2 Users Rate MailUp?

- **Has the product been a good partner in doing business?:** 6.4/10 (Category avg: 9.0/10)
- **Campaign Performance:** 8.7/10 (Category avg: 8.8/10)
- **Content :** 7.9/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.3/10 (Category avg: 8.8/10)

#### Who Is the Company Behind MailUp?

- **Seller:** [Mailup](https://www.g2.com/sellers/mailup)
- **Year Founded:** 2003
- **HQ Location:** Milan, Italy
- **Twitter:** @MailUp\_US  
880 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=94f6639553f8d87f914f0640a5239db48616ab5d9915f3e84af157aa848e4785&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F154096%2F&secure%5Burl_type%5D=linkedin_company_website)  
67 employees on LinkedIn®
- **Ownership:** BIT:MAIL

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising, Internet
- **Company Size:** 51% Small, 40% Medium

#### What Are Recent G2 Reviews of MailUp?

**["A really useful digital product for email and sms marketing"](https://www.g2.com/survey_responses/mailup-review-5151102)**

**Rating:** 5.0/5.0 stars

_— Davide F._

[Read full review](https://www.g2.com/survey_responses/mailup-review-5151102)

**["Good support and tech"](https://www.g2.com/survey_responses/mailup-review-6670240)**

**Rating:** 5.0/5.0 stars

_— Mauricio D._

[Read full review](https://www.g2.com/survey_responses/mailup-review-6670240)

#### What Are G2 Users Discussing About MailUp?

- [What is MailUp used for?](https://www.g2.com/discussions/what-is-mailup-used-for)

### [Warmup Inbox](https://www.g2.com/products/warmup-inbox/reviews)

Warmup Inbox is an email warmup service that automatically raises your email sending reputation through our network of inboxes talking to each other. The process of preparing an email address for general use or email outreach is commonly referred to as “Warming Up” an inbox, where you take a number of steps to ensure that an email address does not become deactivated, blacklisted, or automatically marked as spam when it begins to send outgoing messages to other recipients. This process is typically done with newly created email addresses but also benefits older email addresses who have been having issues with email deliverability, in that a noticeable portion of their outgoing mail is either landing in a spam folder or blocked entirely by an email server due to either being blacklisted or associated with a domain that has a poor reputation.

**Average Rating:** 4.6/5.0

**Total Reviews:** 48

#### How Do G2 Users Rate Warmup Inbox?

- **Has the product been a good partner in doing business?:** 8.8/10 (Category avg: 9.0/10)
- **Campaign Performance:** 9.5/10 (Category avg: 8.8/10)
- **Content :** 9.3/10 (Category avg: 8.8/10)
- **Brand Reputation:** 9.6/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Warmup Inbox?

- **Seller:** [Lead Labs LLC](https://www.g2.com/sellers/lead-labs-llc)
- **Year Founded:** 2019
- **HQ Location:** Prague , CZ
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising, Computer Software
- **Company Size:** 85% Small, 8% Medium

#### What Do G2 Reviewers Say About Warmup Inbox?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **excellent customer support** of Warmup Inbox, highlighting its knowledgeable and helpful staff.
- Users find Warmup Inbox very **easy to implement and use** , appreciating its effectiveness and excellent customer support.
- Users find the **implementation ease** of Warmup Inbox to be impressive, facilitating a smooth and efficient setup.

##### Cons

- Users report **unhappiness with the billing process** , which adds frustration to their overall experience with Warmup Inbox.
- Users experience significant **domain issues** with Warmup Inbox, requiring additional help and leading to dissatisfaction.
- Users experience **email issues** with DMARC and spam, requiring additional support and dissatisfaction with billing processes.
- Users report significant **payment issues** with Warmup Inbox, leading to frustration and dissatisfaction with the billing process.

#### What Are Recent G2 Reviews of Warmup Inbox?

**["The Gold Standard for B2B Deliverability & Unmatched Support!"](https://www.g2.com/survey_responses/warmup-inbox-review-12673160)**

**Rating:** 5.0/5.0 stars

_— Zouhair L._

[Read full review](https://www.g2.com/survey_responses/warmup-inbox-review-12673160)

**["The best option if you need a lot of control over your email warmup and detailed reports."](https://www.g2.com/survey_responses/warmup-inbox-review-11415099)**

**Rating:** 4.5/5.0 stars

_— Gungl I._

[Read full review](https://www.g2.com/survey_responses/warmup-inbox-review-11415099)

### [FlashRev](https://www.g2.com/products/flashrev/reviews)

FlashRev OS is a cutting-edge Agentic AI platform that enhances sales and customer experience (CX) by leveraging autonomous AI agents, omnichannel engagement, and hyper-personalized interactions. Our AI-powered solutions help businesses unlock 30% more conversions and achieve 25% higher customer retention while significantly reducing operational costs. Core Capabilities & Features - Unified GTM stack: FlashRev integrates multiple sales and outreach tools in one interface — from data enrichment, lead generation, outreach sequencing, to calling and engagement. - AI-driven prospecting & lead generation: It can generate high-quality lead lists using large B2B databases and data enrichment, help segment and prioritize leads, and perform real-time company research and analysis. - Omnichannel outreach: Supports outreach via multiple channels — email, phone (call), SMS / messaging / social — allowing companies to reach prospects in the way that works best. - Automated & high-volume calling: Through an “AI Parallel Dialer,” FlashRev can dial many contacts simultaneously (e.g. up to 10 at once), dramatically increasing outreach volume and improving connection rates. - Automated follow-up & messaging sequences: Once leads are identified, FlashRev can run outreach sequences — sending personalized emails or messages automatically, following up, and managing schedule/appointments. - CRM and CRM-stack integration: FlashRev integrates with existing CRM tools, enabling seamless workflow from lead generation to deal tracking.

**Average Rating:** 4.6/5.0

**Total Reviews:** 664

#### How Do G2 Users Rate FlashRev?

- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 9.0/10)
- **Campaign Performance:** 9.2/10 (Category avg: 8.8/10)
- **Content :** 9.0/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.7/10 (Category avg: 8.8/10)

#### Who Is the Company Behind FlashRev?

- **Seller:** [FlashIntel](https://www.g2.com/sellers/flashintel)
- **Year Founded:** 2022
- **HQ Location:** San Francisco, CA
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=309633225bc85c31d78502734fbe8163357350c96b364dedf5c53503a43e4fdf&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmyflashcloud%2F&secure%5Burl_type%5D=linkedin_company_website)  
72 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Account Executive, Sr. BDR
- **Top Industries:** Information Technology and Services, Computer Software
- **Company Size:** 56% Medium, 37% Small

#### What Do G2 Reviewers Say About FlashRev?

_AI-generated summary from verified user reviews_

##### Pros

- Users find FlashIntel to be **easy to use** , enhancing team management and streamlining sales processes effectively.
- Users praise FlashIntel for its **AI-driven simplicity** , enhancing team management and providing valuable market insights effortlessly.
- Users rave about the **efficient lead generation** of FlashIntel, praising its powerful features and data insights.
- Users value the **automation features** of FlashIntel, enhancing efficiency in lead generation and team management.
- Users value the **effective AI-driven sales intelligence** of FlashIntel, enhancing team monitoring and insightful decision-making.

##### Cons

- Users encounter **outdated data** issues that affect accuracy, though it's a common challenge with lead generation tools.
- Users experience **outdated information** with FlashIntel, leading to lost time and unreliable sales intelligence.
- Users experience **inaccurate data** occasionally, requiring extra effort to filter for the European market's specific needs.
- Users report **data inaccuracy** issues with FlashIntel, noting outdated information can hinder effective communication efforts.
- Users often face **data accuracy issues** with FlashIntel, as information can be outdated or inaccurate at times.

#### What Are Recent G2 Reviews of FlashRev?

**["Remarkable Sales Intelligence App, but Calls for Data Refinement"](https://www.g2.com/survey_responses/flashrev-review-11679329)**

**Rating:** 4.5/5.0 stars

_— Sunnysher H._

[Read full review](https://www.g2.com/survey_responses/flashrev-review-11679329)

**["Revolutionary Auto Dialer That 3x Boosts My Outbound Operations"](https://www.g2.com/survey_responses/flashrev-review-11220704)**

**Rating:** 5.0/5.0 stars

_— Anna k._

[Read full review](https://www.g2.com/survey_responses/flashrev-review-11220704)

### [Nureply](https://www.g2.com/products/nureply/reviews)

Email marketing software made for cold email marketing professionals. Using advanced AI to generate email personalization in seconds, send emails, track clicks, opens and replies, see all mails for all inboxes with a unified inbox.

**Average Rating:** 4.2/5.0

**Total Reviews:** 16

#### How Do G2 Users Rate Nureply?

- **Has the product been a good partner in doing business?:** 6.3/10 (Category avg: 9.0/10)
- **Campaign Performance:** 9.0/10 (Category avg: 8.8/10)
- **Content :** 7.9/10 (Category avg: 8.8/10)
- **Brand Reputation:** 8.0/10 (Category avg: 8.8/10)

#### Who Is the Company Behind Nureply?

- **Seller:** [Nureply](https://www.g2.com/sellers/nureply)
- **Year Founded:** 2022
- **HQ Location:** Wilmington, US
- **Twitter:** @NureplyInc  
68 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=3500002060b10221fadcc0c721d296d6345e40bffebe4c27f4727e7d939338c7&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F86660976&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Marketing and Advertising
- **Company Size:** 81% Small, 19% Medium

#### What Are Recent G2 Reviews of Nureply?

**["Superb cold email marketing tool"](https://www.g2.com/survey_responses/nureply-review-9688412)**

**Rating:** 5.0/5.0 stars

_— BL S._

[Read full review](https://www.g2.com/survey_responses/nureply-review-9688412)

**["The Game-Changer Tool for AI-Powered Cold Email Marketing"](https://www.g2.com/survey_responses/nureply-review-9653196)**

**Rating:** 4.5/5.0 stars

_— Ranvir M._

[Read full review](https://www.g2.com/survey_responses/nureply-review-9653196)

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 ![Yukta Rustagi](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Yukta Rustagi")
YR

Researched and written by [Yukta Rustagi](https://research.g2.com/insights/author/yukta-rustagi)

Updated 

Products classified in the overall Email Deliverability category are similar in many regards and help companies of all sizes solve their business problems. However, small business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Small Business Email Deliverability to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Small Business Email Deliverability category.

In addition to qualifying for inclusion in the Email Deliverability Tools category, to qualify for inclusion in the Small Business Email Deliverability Tools category, a product must have at least 10 reviews left by a reviewer from a small business.

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