Knowmail Alternatives [Page 3]

Send short emails & read emails as fast as you read Facebook

Clear, effective, mistake-free writing everywhere you type.

freemium $12.0 / Monthly (Premium)

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

paid Free Trial $39.95 / One-off

Native email app for email productivity.

The new version of Gmail web

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Open Source

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

Shift is the ultimate email client for managing Mail, Calendar, Drive, Slack, Asana, Jira, Evernote, and all your other favourite apps

freemium

MsgSafe.io provides private, encrypted, online communication with layers of security you can trust.

Email how it is supposed to be: ✔ Free, simple and secure ✔ Manage multiple mail accounts in one place, from any device ✔ Sign up today!

Mailspring is a mail client for Mac, Windows and Linux.

Open Source

A fully fledged, free email server solution, an open source project (GPL v2).

Open Source