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Top 98 Email Deliverability Tools SaaS Companies in May 2026

As of May 2026, there are 98 SaaS companies in Email Deliverability Tools. They have combined revenues of $176.2M and employ 1.3K people. They have raised $5.2M and serve 3.2M customers combined.

Email deliverability tools are specialized software solutions designed to ensure that marketing emails successfully reach recipients' inboxes rather than being diverted to spam folders. These tools help organizations manage technical aspects of email delivery, monitor sender reputation, and analyze engagement metrics to optimize overall email campaign performance. The primary use cases include enhancing marketing outreach, maintaining sender credibility, and maximizing return on investment from email marketing efforts. Key features of email deliverability tools often include inbox placement tracking, spam checker functionalities, and email authentication verification. With the right tools, marketers can execute strategies to improve engagement rates, reduce bounce, and increase deliverability rates. Common buyer personas for these tools typically include marketing professionals, digital marketers, and email campaign managers who are focused on improving the efficacy and reliability of their email outreach campaigns.

Companies
98
Revenue
$176.2M
Funding
$5.2M
Employees
1.3K

Filters

Sorting: Highest -> Lowest

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Top Email Deliverability Tools Companies

Showing 10 of 98 companies ranked by annual revenue.

1
Salezilla

San Jose, California, United States

Salezilla is an advanced AI-driven platform designed to automate and enhance cold email outreach for sales teams. It uses artificial intelligence to generate precise lead lists, personalize email content, and manage email infrastructure to improve deliverability. The platform aims to streamline the sales process by reducing prospecting time and increasing the effectiveness of outreach campaigns.

Revenue
$22.7M
Customers
-
Year founded
2018
Funding
-
Team size
12
Growth
-
2
zerobounce

Santa Barbara, California, United States

Our Email Validation Service quickly and accurately removes invalid, disposable, spam traps, abusive and other harmful email addresses. 98% Accuracy Guaranteed. Try our Free Trial now!

Revenue
$10M
Customers
100K
Year founded
2015
Funding
-
Team size
20
Growth
-
3
Warmy

Tel Aviv, Tel Aviv, Israel

We help companies increase sales by providing an email deliverability service. Warmy is the best email warm up tool in 2024. Warmy automatically warm up email, increases email deliverability, and improves the reputation of your domain and, accordingly, your profit will grow. WHAT MAKES WARMY DIFFERENT: 1. To improve your email deliverability, thanks to Warmy you don't need to become an email deliverability expert, figure out how to warm up your email, know how to set up SMTP or configure SPF, DKIM, and DMARC, etc. 2. We use artificial intelligence. We're not linear, we're warming up ten steps further. 3. We warm up your email specifically for the topic of your business. 4. We are the only email warm up tool that offers email heating in over 30 languages. 5. You can easily add your email warm-up templates. 6. We are the only email deliverability tool that does automatic email archiving. 7. We are the only email warm up service that can send 2k proof warm up emails per day. 8. We have a very efficient Email Deliverability Test that checks your deliverability and an Email Health Test that checks the health of your inbox. 9. We also have a dashboard for email marketing agencies. 10. Excellent tech support. Connect with Warmy right here on LinkedIn, email us at [email protected] WhatsApp us at +972543591136

Revenue
$8.4M
Customers
-
Year founded
2020
Funding
-
Team size
56
Growth
-
4
Hunter

Wilmington, Delaware, United States

Hunter is the leading solution to find and verify professional email addresses. Start using Hunter and connect with the people that matter for your business.

Revenue
$8M
Customers
2M
Year founded
2015
Funding
-
Team size
31
Growth
-
5
usebouncer.com

Wroclaw, Lower Silesian District, Poland

Bouncer is a company that provides powerful and affordable email list verification and email validation. Simple App and easy-to-integrate API. 99.99% availability. GDPR compliant by design! We protect our customers from bounced back emails and by that: - secure their reputation as a sender, - ensure continuity of the communication with their customers and partners, - minimize the cost related to an outdated database of contacts, - maximize reach to their customers and partners. Check our website for more details.

Revenue
$7.5M
Customers
-
Year founded
2017
Funding
-
Team size
68
Growth
-
6
Elastic Email

Szczecin, Woj. Zachodniopomorskie, Poland

All the email marketing and delivery tools you need to communicate with your customers. We try to make the world a better place by creating a faster, more efficient email platform. We strongly believe that #EmailSavesTrees, therefore we donate a percentage of all our sales to non-profit organizations protecting the forests around the world. Elastic Email offers a SMTP Relay, HTTP API, Account Interface, Contact Management, Template Editor and many more. Learn more about our services and the company on https://elasticemail.com/

Revenue
$6.8M
Customers
30K
Year founded
2010
Funding
-
Team size
46
Growth
35.12%
7
Luna.ai

Palo Alto, California, United States

The old sales playbook is broken. Today's prospects have zero patience for those one-size-fits-all spam messages. And email service providers have tightened their policies on bulk cold emailing. It's a new era, and the old ways just don't cut it anymore. And if you think simply growing your sales team is the magic bullet, think again. Despite their best efforts, many salespeople miss the mark on understanding and engaging prospects effectively. The ROI of sales reps is getting harder and harder to justify. Sounds familiar? It's time for a change. Enter Luna.ai, your rocket ship in the sales darkness. Luna.ai isn't just another AI sales tool; it's the all-in-one prospect platform you’re looking for. Signal-based selling, personalization at scale, email deliverability– Luna.ai has it covered. With Luna.ai, you're not just selling; you're selling smarter and more effectively. Imagine a system that knows your prospect inside and out, built on a mountain of data and insights to ensure every outreach is spot-on. Fluent in an impressive 152 languages. And the best part? Scalable, with unlimited email accounts, all at one-tenth the cost of traditional methods. At its heart, Luna.ai is about empowering you to excel in what you love doing most: connecting with customers and sealing those deals. It's about removing the guesswork and ensuring that every message you send feels personal and relevant. Set up your first playbook today. With Luna.ai's presets, you'll be up and running in minutes. See you on the moon!

Revenue
$6.2M
Customers
-
Year founded
-
Funding
-
Team size
41
Growth
-
8
SendPulse

New York, New York, United States

Maximizing Email Open Rates

Revenue
$5.8M
Customers
1M
Year founded
2015
Funding
$130K
Team size
159
Growth
26.5%
9
Ongage

Tel Aviv, Israel

Provider of an e-mail marketing gateway platform designed to optimize email deliverability. The company's e-mail marketing platform routes email segments through several different email delivery vendors and offers multi-view in-depth analytics, enabling clients to easily send and measure email campaigns from one convenient email marketing front-end.

Revenue
$5.3M
Customers
-
Year founded
2011
Funding
-
Team size
32
Growth
54.94%
10
GlockApps

Pinedale, Wyoming, United States

GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues. We designed our tools to make it simple for every marketer to test their email placement across global providers, control email authentication, and solve deliverability issues before sending. Our team of email marketing experts also offers consulting and comprehensive deliverability audits with personalized recommendations to help you increase your revenue from email marketing.

Revenue
$5.3M
Customers
-
Year founded
2009
Funding
-
Team size
26
Growth
-

Inclusion Criteria

- Must provide functionalities for monitoring inbox placement rates. - Should include features for tracking and improving sender reputation. - Must offer tools for authentication checks (e.g., SPF, DKIM, DMARC). - Should allow users to analyze email engagement and bounce rates. - Must facilitate compliance with email marketing laws and best practices. - Not just for sending emails; must also provide insights for optimization and analysis.