Postaci Alternatives [Page 3]

Mailo is an email client where you can send and receive emails to and from anyone with an email address.

Disposable email address application.

Warm up your cold email inbox, and never land in spam anymore!

Try for free freemium $9.0 / Monthly

Webmail is an open-source webmail script for existing IMAP servers.

Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day...

An open source mailserver suite.

Open Source

Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.

Try for free paid Free Trial $12.0 / Monthly (Per inbox, per month.)

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

Open Source

Privacy-aware email app for Mac & iOS

Kill The Tabs - Faster, Better Gmail for Mac, with native Calendar, Keep, and Contacts apps

K-9 is an opensource email client making it easy to chew through large volumes of email.

ZeroMail , End-to-end encrypted, peer-to-peer not-instant messaging site.

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

freemium

Email client built exclusively for salespeople