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Top 18 Email Software SaaS Companies in May 2026

As of May 2026, there are 18 SaaS companies in Email Software. They have combined revenues of $65.2M and employ 542 people. They have raised $300K and serve 419.6K customers combined.

Email software encompasses various tools and applications designed to facilitate sending, receiving, and managing electronic mail. It serves a broad range of use cases, from simple personal communication to complex marketing automation, enabling users to efficiently organize their correspondence. Key functionalities often include email account integration, message filtering, collaboration features, and security protocols to safeguard sensitive information. Typically, email software is used by a diverse array of professionals, including sales teams, marketing departments, IT personnel, and administrative staff. These user groups rely on email tools for essential tasks such as outreach, customer engagement, and communication within teams. Features like automation, analytics, custom templates, and integration with other business applications further enhance the effectiveness of email software in improving productivity and streamlining workflows.

Companies
18
Revenue
$65.2M
Funding
$300K
Employees
542

Filters

Sorting: Highest -> Lowest

Filters

Top Email Software Companies

Showing 10 of 6 companies ranked by annual revenue.

1
Fyxer AI

San Francisco, California, United States

Fyxer AI organizes your inbox, drafts extraordinary emails in your tone of voice, and writes better-than-human meeting notes. 14 day free trial. Set up in 30 seconds. No credit card required. Pay and add your team later. Designed for teams that use Gmail, Outlook, Slack, Teams, Google Meet or Zoom.

Revenue
$2.9M
Customers
-
Year founded
2023
Funding
-
Team size
26
Growth
-
2
Emailgistics Corp.

Oakville, Ontario, Canada

Emailgistics is bringing a renaissance back to email, by providing a shared mailbox management solution for Microsoft Office 365. Powerful workflow and analytics features improve team productivity and decision making. Plus, with Emailgistics you continue working in Outlook as your email never leaves Office 365. Building on the knowledge gained over more than two decades of email workflow management, the Emailgistics team understands probably better than anyone else in the world both the challenges and opportunities of effective team email management. With Emailgistics, we are able to offer the benefits of that knowledge and experience in a subscription-based, cloud-hosted Software-as-a-Service platform.

Revenue
$2.6M
Customers
-
Year founded
2018
Funding
-
Team size
14
Growth
97.59%
3
Mailbird

United States

Mailbird offers a Windows email client for managing multiple accounts.

Revenue
$2.5M
Customers
89K
Year founded
2012
Funding
$300K
Team size
34
Growth
-
4
Xink

Copenhagen V, Region Zealand, Denmark

Xink offers a powerful, web-based solution for centrally managing email signatures across Microsoft 365 and Google Workspace environments. With the intuitive interface, you can effortlessly create, update, and deploy professional email signatures for all users across all devices. Leverage your email signatures as a marketing tool to deliver targeted campaigns, boost brand visibility, and engage your email audience effectively. Follow us: X: @XinkInc Facebook: Xink Email Signature Software #Outlook365 #Gmail

Revenue
$2M
Customers
-
Year founded
2009
Funding
-
Team size
18
Growth
-
5
Shortwave

San Francisco, California, United States

Shortwave is an advanced email client that uses AI to enhance email management and productivity. It integrates with Gmail and Google Workspace accounts, offering features like email summarization, AI-powered writing assistance, smart inbox organization, and task management. The platform aims to streamline email workflows and reduce time spent on email-related tasks.

Revenue
$1.9M
Customers
-
Year founded
-
Funding
-
Team size
17
Growth
-
6
atmail

Peregian Beach, Queensland, Australia

Provider of messaging service to enterprises. The company provides email and collaboration services to businesses, universities, government agencies, and service providers. It offers a messaging platform that provides Webmail, calendaring, groupware, and mobility across devices.

Revenue
$1.6M
Customers
-
Year founded
2001
Funding
-
Team size
32
Growth
67.17%

Inclusion Criteria

- Must provide functionalities for sending and receiving email. - Should enable user management for multiple email accounts or inboxes. - Must include organizational tools such as filtering, tagging, or foldering for emails. - Should offer integration capabilities with other software like CRM and project management tools. - Must provide security measures such as encryption and phishing protection. - Not just for personal emailing; must also support business-related features like marketing automation or productivity tools.