Instantly Helps Automate Your B2B Email Outreach Forever.
Also listed in Email Deliverability, AI Sales Assistant, Account Data Management, Lead Mining, Lead Intelligence

as a sales assistant , instantly has helped me to manage outbound email activities in a much more organized way, it makes it easy to create email campaign, schedule follow ups and monitor responses without spending hours sending emails, manually the platform has helped our team stay consistent with proper communication and improve daily productivity. the feature i appreciate most is the automated follow up sequences, once a campaign is set up, instantly sends follow ups emails based on customer activity which saves a lot of manual work, the campaign dashboard is also easy to understand and provides useful insights into open , replies and engagement, i regularly use instantly for email outreach campaign, prospect list management, automated follow ups , tracking email engagement campaign performance monitoring supporting lead generation organizing sales outreach. the interface is clean, simple and easy to navigate , creating campaign , importing contact and checking campaign result can all be done without a steep learning curve. instantly integrates well with Google workspace , agentforce sales, CRM plartform spreadsheets tools. Review collected by and hosted on G2.com.
Whether you’re looking to reach more customers, sell more products, or simply share your passion with the world, Constant Contact has all the tools, features, and expert guida
Also listed in SMS Marketing, Event Marketing, Email Template Builder, AI Writing Assistant, Email Deliverability

What I like most about Constant Contact is how easy it is to create, manage, and track email marketing campaigns without needing technical expertise. The platform offers an intuitive interface while still providing the tools needed to run professional marketing campaigns. Drag-and-drop email builder with professionally designed templates. Simple contact list management and audience segmentation. Built-in email automation for welcome emails and follow-up campaigns. Detailed analytics for open rates, click-through rates, and campaign performance. Integrations with CRM, e-commerce, and social media platforms to streamline marketing efforts. For me, the most valuable feature is the user-friendly campaign builder. It makes designing responsive emails quick and straightforward, allowing campaigns to be created and launched with minimal effort. The biggest benefit is improved marketing efficiency. Constant Contact helps me reach customers consistently, monitor engagement, and optimize campaigns based on real performance data without requiring advanced marketing or design skills. Review collected by and hosted on G2.com.
lemlist offers a large set of features to control all the process of email outreach.
Also listed in AI Sales Assistant, Email Deliverability, Email Marketing, Outbound Call Tracking

What I like most about lemlist is its advanced personalization capabilities, particularly dynamic images and customized text tags in cold outreach. The automated multichannel sequences—combining email, LinkedIn steps, and calls—have significantly improved our reply rates. Furthermore, deliverability tools like lemwarm have drastically reduced our bounce rates and ensured our emails land consistently in the primary inbox. It has streamlined our prospecting workflow and saved us valuable hours every week. Review collected by and hosted on G2.com.
Easily manage your marketing campaigns, transactional emails, and SMS messages all in one simple and powerful platform.
Also listed in Personalization, Push Notification, E-Commerce Personalization, Transactional Email, Appointment Reminder
Honestly, very little. The UI is decent at first glance, but once you actually try to use the platform at scale for real business operations, the problems start piling up quickly. Review collected by and hosted on G2.com.
Mailchimp is the #1 Email Marketing and Automations platform for growing businesses. More than 12 Million businesses including TEDTalks, Shutterstock, Boston Market, Nikon Ind
Also listed in AI Writing Assistant, Email Deliverability, Transactional Email, Email Testing

The paid version of Mailchimp includes email templates, an image library, and campaign management. It also offers direct connections for automatic posting to popular social media platforms, plus analytics and charts showing campaign opens and clicks, opens by time of day (for deciding the best times to send), global location, devices used (to help make sure you are optimizing for mobile devices), AB comparisons, cross campaign comparisons, and more. With the use of AI it helps you create more effective messaging, better subject lines to increase opens, and automatic resend to non-opens.
The free version is quite limited but if you are a small organization and only need a few emails, you can easily use the free version Review collected by and hosted on G2.com.
Flodesk is an intuitive email marketing platform designed to help entrepreneurs and small businesses create visually stunning emails and sales pages with ease. Its user-friend
Also listed in Email Template Builder, E-Commerce Tools

I really like their focus on simplicity in everything, like having templates and brand details that can be applied to every component automatically just by setting up my brand guidelines. The cohesive integrations with Canva, Instagram feed, and the MCP server that can work well with every AI client Review collected by and hosted on G2.com.
Sender.net is an email marketing software as a service. It's tailored for ecommerce and eshops, but suitable for everybody.
Also listed in SMS Marketing, Email Template Builder, Push Notification, Conversational Marketing, Lead Capture
What I like most is how easy it is to create and send professional email campaigns. The interface is intuitive, the email editor is straightforward, and setting up automation takes very little time. I also appreciate the reliable deliverability, detailed campaign analytics, and the generous free plan, which makes it a great choice for small businesses and growing teams. Review collected by and hosted on G2.com.
GMass is an email marketing and automation tool that integrates directly with Gmail, transforming it into a powerful platform for sending personalized mass emails and managing
Also listed in Email Marketing

Gmass is the BEST mail merge tool we’ve ever worked with. It’s a simple Gmail plugin that works directly with the Gmail interface. No limits (other than the regular Gmail limits), the ability to schedule emails, limit the number of daily emails, and more. We LOVE it! Review collected by and hosted on G2.com.
SalesTarget.ai is an all-in-one AI-powered Sales Operating System (Sales OS) that helps teams discover, validate, engage, and close prospects from a single seamless platform.
Also listed in Lead Intelligence, CRM, AI Sales Assistant, Sales Engagement, Account Data Management

I use Lead Explorer regularly to find prospects that match my ideal customer profile. The search filters help me narrow down results by industry, job title, company size, and other criteria without spending hours on manual research. I also like that I can enrich my leads within the same platform instead of switching between multiple tools. Overall, it has become an important part of my prospecting process. Review collected by and hosted on G2.com.
Customer data platform and cross-channel marketing automation for SMEs, retailers, and big brands.
Also listed in Email Marketing, Personalization, Customer Data Platform (CDP), Email Deliverability, SMS Marketing

The amount of different tools available and how deep you can go with segmentation, ensuring that what you're sending is to the right persona selling the correct product. Review collected by and hosted on G2.com.
Success.ai is an AI-driven platform designed to revolutionize B2B lead generation and email outreach. By providing unlimited access to a vast database of over 700 million veri
Also listed in Email Marketing, Sales Intelligence, Lead Mining, CRM

I find Success.ai easy to use, and it’s straightforward to set up cold email campaigns without a complicated learning process. The platform is actively updated, which is important in a space where email deliverability rules change frequently.
I particularly like the built-in lead database, which makes it easier to find and target potential prospects without relying on multiple external tools. The email warm-up feature also helps improve deliverability, ensuring campaigns have a better chance of reaching inboxes.
The AI-powered email writing feature is also helpful for quickly creating outreach messages, which saves time when managing multiple campaigns. Review collected by and hosted on G2.com.
BigMailer is an Email Marketing Platform for Agencies and Developers
Also listed in Transactional Email
What I like most about BigMailer is how easy it is to use while still offering everything I need to grow my business. I connected it to my website without any issues, and it’s become the main platform I use to send bulk emails for all of my events. It also helps me keep my email list organized, so I always have access to my subscribers in one place. Creating campaigns is simple, and I like being able to schedule emails and track how they’re performing. The customer support has been excellent as well. When I had a payment issue, their team responded quickly and solved the problem right away. Knowing I can count on fast, helpful support gives me confidence in using the platform. Review collected by and hosted on G2.com.
Mailscale is a comprehensive solution designed to streamline and enhance cold email outreach for businesses. By automating the creation of up to 1,000 email accounts, Mailscal

I've been using Mailscale for a few months and the experience has been first-class. Baris from the team has been a great help, checking in weekly to fine-tune my campaigns and improve response rates. It's rare to find a platform that combines powerful technology with such a high-touch, personalized strategy. The initial setup was super easy. I highly recommend Mailscale for anyone looking to start cold emailing or considering switching providers for a more expertise-driven approach. Review collected by and hosted on G2.com.
Emercury helps list managers, marketers, and publishers deliver, monetize and generate leads through email communications.
Also listed in Email Deliverability

The automation capabilities are what impressed me most. We have a lot of moving pieces across our organization, and keeping everyone in the loop used to be a manual headache. Emercury lets us set up workflows that run on their own, which frees up our staff to focus on their actual responsibilities rather than babysitting email campaigns. The segmentation is straightforward and helps us tailor our messaging to different audiences without overcomplicating things. It is reliable and does exactly what we need it to do. Review collected by and hosted on G2.com.
Poptin is a platform designed to engage visitors and coverts them into leads, subscribers and sales.
Also listed in Email Marketing

Good features for a lean marketing team. The exit-intent plus targeting combination is a great CRO experiment to test for any B2B SaaS. Native A/B testing allows finding which version won without exporting data to a spreadsheet. Review collected by and hosted on G2.com.
Vision6 is a provider of email and SMS marketing software designed for marketers and agency professionals. Vision6 allows you to send beautiful emails, reach customers immedia
Also listed in SMS Marketing

The first thing that struck me when I logged into Vision6 was how uncluttered everything felt. The main sections—campaigns, contacts, reports, and templates—are laid out clearly, and it’s immediately obvious where you need to go to do what you want. Review collected by and hosted on G2.com.
FireDrum's permission-based email marketing service combines an easy-to-use, web-based application with magazine-quality templates that can be custom designed to suit your mar
Also listed in Email Template Builder

I like this platform because of following features:
1. Easy to implement automated emails campaign at affordable pricing.
2. I use this platform daily.
3. Easy to use.
4. Great customer service available. Review collected by and hosted on G2.com.
With various recognitions and trust from businesses, MailBluster is the most advanced, reliable, and cost-effective email marketing software in the world. With its Top Perform

MailBluster is an email marketing platform that distinguishes itself through a multi-SMTP architecture, allowing users to connect their own sending infrastructure via Amazon SES, Postmark, Mailgun, or SMTP2GO. This flexibility is a significant technical advantage because it means I am not locked into a single provider. If deliverability or pricing changes with one SMTP service, I can switch or test alternatives without migrating to an entirely new email platform. The recent addition of Postmark, Mailgun, and SMTP2GO as supported providers beyond the original Amazon SES integration demonstrates active development and responsiveness to user needs.
The campaign builder offers both a drag-and-drop email composer and raw HTML editing capabilities. The drag-and-drop editor produces responsive HTML newsletters without requiring any coding knowledge, while the HTML mode gives full control over template structure for more complex designs. I have found the drag-and-drop interface to be intuitive and quick for standard newsletter layouts, with content blocks snapping into place logically and preview rendering accurately across desktop and mobile views.
List segmentation is handled with depth and precision. I can target and retarget subscribers based on behavioral data: who opened or did not open a specific email, who clicked a certain link, or what products they purchased. This level of granularity allows for highly targeted campaigns without needing a separate marketing automation platform. Combined with custom fields and tag-based organization, the segmentation engine provides enough flexibility to build complex audience segments for personalized messaging at scale.
A/B testing is natively supported, allowing me to set up two variations of a campaign and measure which performs better in terms of opens, clicks, or conversions. The implementation is straightforward, and results are clearly displayed so I can make data-driven decisions about subject lines, content, and send times without guesswork.
Real-time tracking and reporting cover all essential metrics: opens, clicks, bounces, complaints, and eCommerce conversions, visualized through charts and data tables. The tracking updates in near real-time, which is critical when monitoring campaign performance during time-sensitive sends. The reporting interface is clean and does not require navigating through multiple screens to find the data I need.
The double opt-in feature is well-implemented and helps build qualified lead lists while maintaining strong sender reputation. This is particularly important when working with SMTP providers that enforce strict complaint rate thresholds, as confirmed subscribers are significantly less likely to mark emails as spam.
The pricing model is remarkably transparent and affordable. The Pro plan costs 60 USD per year plus 0.60 USD per 1,000 emails sent through MailBluster, with the SMTP provider's fees billed separately. For high-volume senders, this structure results in dramatically lower costs compared to traditional per-subscriber pricing models used by competitors. The Starter plan offers a free tier with up to 3,000 emails and unlimited leads, which is generous for testing or very small lists. The Executive plan at 120 USD per year adds dedicated support, 3-year data retention, unlimited automation workflows, and a 5% yearly reward on email sending costs.
The developer API is RESTful and well-documented, supporting programmatic subscriber management, campaign triggering, and event tracking. This makes integration into custom applications, CRMs, or backend systems feasible without depending solely on the dashboard. The ability to mass add, delete, or unsubscribe leads via API or bulk operations is a time-saver when managing large lists that change frequently.
Bounce, complaint, and unsubscribe handling is automated and works seamlessly with the connected SMTP provider's feedback loops. This ensures list hygiene is maintained passively without manual intervention, protecting sender reputation over time.
The platform supports multiple brand users and roles, which is essential for agencies or teams managing email marketing for several brands from a single account. Each brand can have its own configuration, templates, and subscriber lists while being managed under one umbrella. Review collected by and hosted on G2.com.
SendX is cloud based SAAS platform that helps you do email marketing automation and lead generations for your web business.

I've been using SendX for several years. I've been marketing online for over three decades, so I have a lot of experience with a lot of different email service providers. SendX is easy to use and more cost efficient than the others I've worked with.
Something that really stands out for me is their support team. Their patience, responsiveness and availability are amazing. Their ability to get things done quickly is second to none. I consider that to be incredibly important when it comes to email marketing, when even one lost day can be a serious problem.
I've already moved two of my companies to SendX From other platforms, and I'm constantly recommending them to people I know in this business. Review collected by and hosted on G2.com.
Mumara CampaignsPlus is a comprehensive email marketing automation platform designed to streamline and enhance digital communication strategies for businesses of all sizes. It

What works exceptionally well for our team is Mumara’s on-premise deployment model, which lets us retain full ownership and governance of all in-house data — a non-negotiable advantage for meeting strict GDPR requirements across European regions. Its contact list administration and audience segmentation tools are powerful and flexible, letting us split contacts by industry vertical and run highly targeted outreach that resonates with different stakeholder groups. We also rely heavily on its comprehensive analytics and reporting suite. We can clearly monitor how recipients interact with our trade research documents and stakeholder feedback content, giving us actionable insights to adjust our communications strategy. On top of that, its stable delivery system stands out; important policy updates and industry announcements consistently land in inboxes reliably, with very few instances of messages getting marked as junk mail. Review collected by and hosted on G2.com.