Best Email Marketing Software - Page 35

How Many Email Marketing Software Products Does G2 Track?

Total Products under this Category: 810

Category Stats (Nov 2026)

  • Average Rating: 4.37/5 (↑0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Mailarrow (+8.82%) - Among all products in this category, Mailarrow recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank Email Marketing Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 83,200+ Authentic Reviews
  • 810+ 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 Marketing Software

G2 Grid® for Email Marketing Software plotting products by satisfaction and market presence

Highlighted products: Constant Contact, Brevo, Intuit Mailchimp Email Marketing, lemlist, Instantly, Flodesk, Pipedrive, and Dotdigital.

Underlying data: [Grid® JSON](https://www.g2.com/categories/email-marketing/grids.json?focus%5B%5D=constant-contact&focus%5B%5D=brevo-brevo&focus%5B%5D=intuit-mailchimp-email-marketing&focus%5B%5D=lemlist&focus%5B%5D=instantly&focus%5B%5D=flodesk&focus%5B%5D=pipedrive&focus%5B%5D=dotdigital)

Bulkforge

BulkForge is a bulk email orchestration service for teams that run on Azure. You compose and send from a hosted dashboard, but the sending itself is done by an agent that you deploy into your own Azure subscription. The agent reads your Postmark token, Azure Communication Services (ACS) connection string, or SendGrid API key from your own Key Vault, so those credentials are never given to BulkForge. BulkForge is not an email provider: messages are delivered through your own Postmark, ACS, or SendGrid account. THE PROBLEM Most bulk email tools ask you to paste a provider API key into the vendor's dashboard, which puts a sending credential on infrastructure you do not control. BulkForge keeps the credential in your tenant and adds a job queue, routing between providers, and a per-recipient send record on top of the accounts you already have. WHO IT IS FOR Azure-based teams that send appointment reminders, alerts, and operational notices to a list of recipients, and want the provider credential to stay under their own governance. Typical users are IT, operations, and application teams in healthcare, financial services, and enterprise IT. HOW IT WORKS Subscribe on the Azure Marketplace and sign in to the dashboard with a Microsoft work or school (Entra ID) account. Deploy the Customer Agent into your own resource group from the Marketplace. The template provisions a Function App, a Key Vault, and a storage account. Enter your provider credentials during deployment or later; they go into your Key Vault. In the dashboard, load an audience (CSV, pasted JSON, or a list of addresses), choose message content (an HTML file, a synced Postmark template, or the built-in editor with a live preview), pick the sender and the agent, and send. The agent polls the hosted service for jobs, sends through your provider, and reports each recipient's result back. The agent starts every connection itself. WHAT YOU GET One compose screen: audience, content, sender, and target agent Three delivery providers: Postmark, Azure Communication Services Email, and SendGrid, with configurable channel priority and a fallback channel Dry run: pushes a job through validation and routing without sending anything; it does not count against your monthly sends Per-recipient audit trail: accepted or failed with the provider's reason, the channel used, the provider message ID, and a timestamp, exportable as JSON or CSV A job summary with failures grouped by reason Optional completion webhook: BulkForge posts a JSON summary to an HTTPS URL you provide when a job finishes Workflow Trigger API: start a send from Power Automate, Logic Apps, or your own code with a single REST call (details below) Azure Communication Services send limits: set your own hourly and per-minute limits, and switch batch sending on or off, under Manage Agents Agent status in the dashboard, with the agent's version and last heartbeat WORKFLOW TRIGGER API POST /api/workflows/trigger, authenticated with a BulkForge API key (a bfk_ key you create in the dashboard) sent as a bearer token. The body names the agent and carries the recipients, with optional message content or a saved template ID, an idempotency key, a scheduled time, and a completion webhook URL. The same key can read a job's report and download its audit export. This is the only external API; BulkForge has no separate public API for contacts or campaigns. A ready-made OpenAPI file can be imported into Power Automate as a custom connector. SECURITY MODEL Delivery credentials stay in your Key Vault and are read by the agent through managed identity. The hosted service does not store or receive them. It does store what it needs to hand a job to your agent: the recipient addresses, any per-recipient template data, the subject and message content, the per-recipient audit records, saved templates, and job counters. A daily sweep clears the stored content of finished jobs after a retention period and deletes audit records after a longer one; the periods are listed in the install guide. A job whose content has been cleared cannot be re-sent from the dashboard. The hosted service runs in Azure. WHAT BULKFORGE DOES NOT DO It is not an email provider and does not deliver mail itself. It records whether the provider accepted or rejected each message at send time. It does not receive bounce, complaint, delivery, or open events, so "accepted" does not mean "delivered". It has no unsubscribe handling, suppression-list management, open or click tracking, A/B testing, or drip sequences, and it does not keep a contact database; audiences are uploaded per send. Scheduled sends are set through the API, not in the dashboard. With Azure Communication Services batch sending on, an address on Azure's suppression list inside a batch can be dropped without a failure being recorded. Batch sending can be switched off, and each recipient is then sent separately. It is not a compliance certification, and it does not make your messages compliant with email law. PLANS Free, $0/month: 500 sends per month, 1 agent, no credit card. Starter, $49/month: 25,000 sends per month, 1 agent. Pro, $199/month: no BulkForge cap on sends, unlimited agents. Your email provider's own limits still apply. All plans include the dashboard, the three providers, routing and fallback, and the audit trail. Plans are flat-rate by monthly send volume and number of agents, not per seat. Sends are counted per recipient, per calendar month. Azure resource costs for the agent are billed separately by Azure. COMMON QUESTIONS Does BulkForge see my provider credentials? No. They are stored in your Key Vault and read by the agent in your subscription. Does BulkForge store my recipient list and message text? Yes, for the retention period, so the agent can fetch the job. See the security model above. Is it an alternative to Postmark, ACS, or SendGrid? No. It sends through them, using your accounts. Can I try it first? Yes. The Free plan includes 500 sends per month with no credit card. Is there a direct integration with InsightForge? No. They are separate products with no direct integration.

Who Is the Company Behind Bulkforge?

Buttondown

Buttondown is a small, elegant tool for producing newsletters. The minimalist interface makes it easy for you to write great emails; the automation acts like the editorial assistant you wish you had, by checking for typos, broken links, or malformed images; the portable subscription widget makes it really easy to grow your audience from wherever you host your site.

Average Rating: 4.0/5.0

Total Reviews: 1

Who Is the Company Behind Buttondown?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Buttondown?

BuzzBuilder

BuzzBuilder gives both salespeople and marketers a smarter way to connect with potential buyers, generate interest, and drive new sales leads to your inbox. It helps salespeople send automated cold email campaigns while the marketing team generates inbound web leads. Best of all, it's easy to use and can be implemented in a matter of hours, not months.

Average Rating: 4.6/5.0

Total Reviews: 16

How Do G2 Users Rate BuzzBuilder?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind BuzzBuilder?

Who Uses This Product?

  • Company Size: 56% Small, 25% Medium

What Are Recent G2 Reviews of BuzzBuilder?

What Are G2 Users Discussing About BuzzBuilder?

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How it works

CallHub

CallHub is a trusted campaigning platform that will revolutionize your outreach, canvassing, mobilizing, and marketing campaigns. We offer calling, texting, and email solutions for political campaigns, advocacy groups, nonprofits, and businesses of all sizes. But CallHub is more than a software solution. We understand your needs for data security, high contact rates, automation, reliability, and compliance. CallHub is designed with these parameters in focus. Try us out today!

Average Rating: 4.8/5.0

Total Reviews: 32

How Do G2 Users Rate CallHub?

  • Has the product been a good partner in doing business?: 9.3/10 (Category avg: 8.8/10)

Who Is the Company Behind CallHub?

  • Seller: CallHub
  • Year Founded: 2011
  • HQ Location: Claymont, DE
  • LinkedIn® Page: www.linkedin.com
    217 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Political Organization
  • Company Size: 74% Small, 23% Medium

What Do G2 Reviewers Say About CallHub?

AI-generated summary from verified user reviews

Pros
  • Users find the call recording feature of CallHub essential for managing staff calls and sales efficiently.
  • Users value the ease of use of CallHub, enjoying flexible scaling and cost-effective call center functionalities.
  • Users value CallHub for its efficiency in managing staff calls and sales pipelines seamlessly.
  • Users appreciate the flexibility of CallHub, enabling scalable call center functions without long-term commitments.
  • Users appreciate the helpful features of CallHub, streamlining call management and enhancing sales efficiency.
Cons
  • Users report frequent call issues, including unexpected disconnections and echo during conversations affecting usability.
  • Users find the higher cost per minute and inadequate reporting features challenging for effective campaign management.
  • Users often face connection issues, experiencing unexpected call disconnections and echo problems during conversations.
  • Users experience dialer limitations such as unexpected call disconnections and echo during conversations.
  • Users find the cost per minute to be high, which affects the overall value of CallHub's features.

What Are Recent G2 Reviews of CallHub?

What Are G2 Users Discussing About CallHub?

Caltrixio

Caltrixio is email marketing automation for e-commerce brands that sell on their own websites, built to turn one-time buyers into repeat customers. Flows trigger from what shoppers do (browsing, adding to cart, ordering), segments update as they shop, and campaigns are built in a drag-and-drop editor that renders well in every inbox. Sign-up forms, a preference center and revenue attribution are built in, so you can see which emails bring orders back. Sending stays permission-based: authenticated sending domains, checked lists, instant suppression, and automatic pauses when bounces or complaints rise. Caltrixio connects to WooCommerce through its plugin, to Shopify, or to any website with a tracking script. It is built for stores selling in the US. Pricing: a Free plan covers 250 profiles and 500 emails a month. Paid plans start at $15/month for 500 profiles and every plan includes every feature. See https://caltrixio.com/pricing

Who Is the Company Behind Caltrixio?

CampaignLark

CampaignLark is a modern email marketing and communication platform built to give businesses complete control over how they connect with their audience, combining powerful sending infrastructure with an intuitive marketing suite. At its core, CampaignLark allows you to create, manage, and send email campaigns at scale, while maintaining strong deliverability and deep visibility into performance. All-in-One Campaign Creation CampaignLark gives you multiple ways to build emails depending on your workflow. Use the drag-and-drop editor for fast, visually designed campaigns, start from pre-built templates, or import your own custom HTML for full control. Whether you're a marketer or a developer, the platform adapts to how you prefer to work. Flexible Audience Targeting CampaignLark is built around precision targeting. Organise your contacts using tags, custom fields, and segmentation rules, then send campaigns to highly specific audiences. This ensures your messaging is relevant, personalised, and more likely to convert. Advanced Campaign Sending & A/B Testing From simple one-off sends to more advanced strategies, CampaignLark supports a wide range of campaign types. You can test subject lines, content variations, or layouts using A/B testing to see what resonates best with your audience. This data-driven approach helps you continuously refine and improve performance. Powerful Analytics & Reporting The dashboard provides real-time insights into everything that matters, emails sent, delivered, open rates, click-through rates, bounces, and unsubscribes. Visual graphs show day-to-day trends, helping you identify patterns and optimise timing. You’ll also get geographical data to understand where your audience is engaging from, giving you another layer of targeting intelligence. Workspaces for Organisation & Scale CampaignLark introduces workspaces, allowing you to separate contacts, campaigns, and analytics across different brands, clients, or business units. This is especially useful for agencies or businesses managing multiple audiences, giving you clean separation and better control over operations and billing. Built for Deliverability Behind the scenes, CampaignLark is designed with deliverability in mind. Emails are sent through optimised infrastructure to maximise inbox placement and reduce the chances of landing in spam. This ensures your campaigns actually reach your audience, where they matter most. Backed by the core infrastructure of Maileroo, one of the most reputable and user-driven platforms that specialise in deliverability and scalability for email sending. Designed for Growth Whether you're just starting out or scaling to large audiences, CampaignLark grows with you. Its balance of ease-of-use and advanced functionality makes it suitable for marketers, developers, agencies, and SaaS businesses alike. In short, CampaignLark isn’t just about sending emails, it’s about giving you the tools, data, and flexibility to build smarter campaigns, reach the right people, and continuously improve your results.

Who Is the Company Behind CampaignLark?

Captain Verify

Let’s be honest: sending an email campaign and watching your bounce rate spike is incredibly frustrating. You’ve put in the work to build your audience, but the reality of the digital world is that data decays fast. People change jobs, use disposable addresses, or simply make typos when signing up. This isn't just a minor technical glitch; it directly hurts your sender reputation and wastes your marketing budget on people who will never see your message. CaptainVerify was born out of a simple mission: to help marketers and developers regain control over their data quality without the usual complexity. We believe that cleaning your email list shouldn’t be a chore or a technical headache. Instead of just giving you a "valid" or "invalid" status, we provide a deep dive into your database, identifying spam traps, risky domains, and catch-all addresses that could put your deliverability at risk. The way we work is straightforward and transparent. You can drop a massive file into our dashboard for a quick cleanup or plug our API directly into your website to stop bad data before it even enters your system. Because we are based in Europe, we’ve built everything with a "privacy-first" mindset. We are fully GDPR-compliant, ensuring that your data is encrypted, processed securely, and deleted once the job is done. We don’t believe in trapping users with complex subscriptions you’ll forget to cancel. Our pay-as-you-go model is designed to be fair, allowing you to scale your verification needs as your business grows. Whether you’re a startup sending your first newsletter or an established enterprise managing millions of contacts, our goal remains the same: making sure your emails actually land where they belong.

Average Rating: 4.4/5.0

Total Reviews: 4

How Do G2 Users Rate Captain Verify?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Captain Verify?

Who Uses This Product?

  • Company Size: 75% Medium, 75% Small

What Are Recent G2 Reviews of Captain Verify?

What Are G2 Users Discussing About Captain Verify?

Carts Guru

Chase up every lead, convert every sale, and grow your e-commerce business fast with an advanced marketing automation software designed specifically for e-merchants. In just a few clicks you can build and customize first-class marketing campaigns for the awareness, consideration, and after-care stages of the customer journey, then just click launch and we take care of the rest. Using our multichannel capabilities you can combine SMS, email, and Facebook Messenger into one cohesive campaign to reach each individual customer where they respond best and maximize your returns. Carts Guru provides you with pre-built campaigns for all the most popular e-commerce use cases: Abandoned cart campaigns - automatically retarget every visitor who places an item in their cart then abandons it before checkout. Customer win-back campaigns - remind old customers how great your products are and bring them back to your online store. Post-purchase campaigns - upsell existing customers by recommending relevant products at the right moments. Promotional campaigns - nurture customers with seasonal offers, new products, or one-time discounts and retain their business long-term. And many many more...

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate Carts Guru?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Carts Guru?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Carts Guru?

What Are G2 Users Discussing About Carts Guru?

Chargezen SmartyTap

SmartyTap is email and SMS marketing in one place, with email, texts, chat and calls in one inbox. Send welcome, abandoned cart and win-back messages, grow your list with signup forms and popups, and reach the right people based on what they buy. Starter is US$20 a month (2,500 contacts, 25,000 emails and 250 text credits a month); Pro is US$199 a month or US$1,990 a year (25,000 contacts, 250,000 emails and 2,500 text credits a month). Texts cost 2 cents per message part. Part of Chargezen, the unified revenue operations platform: every product runs on the same business and customer data.

Who Is the Company Behind Chargezen SmartyTap?

  • Seller: Chargezen
  • Year Founded: 2020
  • HQ Location: South San Francisco, US
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

charles

charles is a conversational marketing software company helping brands make messaging an effective part of their marketing mix. Alongside email, social and paid media, channels such as WhatsApp and RCS enable two-way conversations that guide purchases and strengthen customer relationships. Our latest innovation, charles cowork, makes the platform faster and easier to use through chat and prompts. Teams describe their goals to build campaigns, audiences and automations, analyse performance and identify improvements. By combining account context, channel expertise and visual editing, charles cowork reduces manual setup time and costs while marketers retain control over publishing.

Average Rating: 4.8/5.0

Total Reviews: 29

How Do G2 Users Rate charles?

  • Has the product been a good partner in doing business?: 9.8/10 (Category avg: 8.8/10)

Who Is the Company Behind charles?

  • Seller: Charles
  • Year Founded: 2019
  • HQ Location: Berlin, DE
  • LinkedIn® Page: www.linkedin.com
    74 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Cosmetics, Apparel & Fashion
  • Company Size: 88% Small, 6% Medium

What Do G2 Reviewers Say About charles?

AI-generated summary from verified user reviews

Pros
  • Users praise the ease of use of Charles, highlighting its intuitive design and efficient navigation for enhanced productivity.
  • Users appreciate the effective customer engagement with Charles, enhancing communication and streamlining automation processes effortlessly.
  • Users rave about the responsive customer support from Charles, making their setup and experience significantly smoother.
  • Users appreciate the automation features of Charles, enhancing communication and streamlining processes for better results.
  • Users appreciate the business growth capabilities of Charles, enhancing communication and fostering new customer relationships effectively.
Cons
  • Users report buggy features that can disrupt experience, though most issues are resolved quickly.
  • Users experience occasional minor glitches with Charles, though most are quickly resolved, ensuring smooth usage.
  • Users find the service expensive, though some believe the investment is worth it if managed wisely.
  • Users feel that segmentation issues hinder their overall experience and suggest improvements for better functionality.
  • Users experience occasional minor glitches in Charles, though they are typically resolved quickly.

What Are Recent G2 Reviews of charles?

What Are G2 Users Discussing About charles?

Churn Buster

Churn Buster recovers more of the revenue subscription businesses lose to failed payments (Dunning) and keeps more customers when they try to cancel (Cancel Flows). Since 2013, Churn Buster has worked with 1,000+ subscription accounts. Dunning runs email recovery campaigns on dedicated sending infrastructure, adds SMS on platforms that support it, and measures recovery with Rolling Analysis. Cancel Flows asks why customers are leaving, shows save offers, and tests those offers against each other. It includes a one click cancel option for click-to-cancel requirements, Offer Cooldown to limit how often one customer can accept the same offer, and Sentiment AI on exit feedback. Pricing is a flat monthly fee based on MRR tier. Churn Buster integrates with Stripe, Shopify, Braintree, Recharge, Loop, Skio, Smartrr, Awtomic, Ordergroove, Seal, Stay.ai, Rivo, Recurly Commerce (Privé), Checkout Champ, Inveterate, and Subbly, or connects via API (Cancel Flows availability varies by platform).

Average Rating: 4.3/5.0

Total Reviews: 3

How Do G2 Users Rate Churn Buster?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)
  • Sending Outbound Emails: 6.7/10 (Category avg: 9.0/10)
  • Building and Personalizing Emails: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind Churn Buster?

Who Uses This Product?

  • Company Size: 67% Small, 33% Medium

What Do G2 Reviewers Say About Churn Buster?

AI-generated summary from verified user reviews

Pros
  • Users find Churn Buster's ease of use impressive, with a user-friendly UI and effortless implementation.
  • Users appreciate the easy navigation of Churn Buster, finding the UI and dashboard insightful and user-friendly.
  • Users appreciate the easy setup of Churn Buster, finding the implementation process straightforward and efficient.
Cons
  • Users find the high cost of Churn Buster, especially for implementation, to be a significant drawback.

What Are Recent G2 Reviews of Churn Buster?

What Are G2 Users Discussing About Churn Buster?

CircuPress

CircuPress is an email service provider built specifically for WordPress.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate CircuPress?

  • Sending Outbound Emails: 10.0/10 (Category avg: 9.0/10)
  • Building and Personalizing Emails: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind CircuPress?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of CircuPress?

What Are G2 Users Discussing About CircuPress?

ClevMail

ClevMail is an email marketing platform in which an AI agent writes campaigns from a short request. During setup, the business describes what it sells and how it talks to its customers. From then on, a user can ask for a campaign in one sentence. The agent, called Clevi, reads the company website, recent campaigns and the contact list, writes the email together with a generated image, suggests which contacts should receive it and leaves the draft in the account. Every draft passes a set of rules written in code before the user sees it. The rules flag figures that do not appear in the company profile or documents, links without a valid address, placeholders left empty, cliches and subject lines that run too long. They report what they find and do not rewrite the text. Each account sets how much the agent does on its own, on three levels: Suggest, Write drafts and Send for approval. On every level, a campaign written by the agent is sent only after a person presses send. The account also includes a block editor with inbox preview, contact import, tags and segments, automated welcome, WooCommerce abandoned cart and win-back flows, open and click reports, one-click unsubscribe with consent tracking, and a dedicated sending subdomain on every plan. The interface is available in English and Romanian. Prices are in RON, and the free plan has no time limit.

Who Is the Company Behind ClevMail?

Yukta Rustagi
YR
Researched and written by Yukta Rustagi
Updated April 9, 2026