Knowmail

Email and messaging Artificial Intelligence engine

19 Alternatives To Knowmail

Airmail

Airmail is a lightweight and lightning fast mail client for Mac.
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Apple Mail

There’s big news attached.
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Evolution

Apps/Evolution - GNOME Wiki!

Front App

multi-channel inbox service for collaborative teams

GMX

GMX Mail is a German-based free webmail service provided by GMX (Global Mail Exchange).

Gaggle Mail

Gaggle Mail is a simple and easy to use email list manager.

Inky

Inky is a software program that roots our phishing emails to better your cybersecurity.
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MDaemon Messaging Server

Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for…

Mail-in-a-box

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Mailbird

Mailbird is the best email client for Windows 7, 8 and 10

Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.
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Postbox

The Power Email App for busy professionals, like you.
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ProtonMail

Secure email with absolutely no compromises. Get your free encrypted email account today.
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Sanebox

SaneBox is a cloud-based service that allows users to filter and manage their emails.

Squarespace Email Campaigns

Email, but pretty.

Windows Live Photo Gallery

Get help and how-to info for Windows Essentials—including Windows Live Mail, Movie Maker, and more.
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Zoho Mail

Zoho Mail is a webmail service built with the needs of a modern business in mind.
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eM Client

eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.