Microsoft Outlook2021

Windows email client that uses SMTP and IMAP

PRO: It has collaboration tools.
CON: Performance issues on some devices
Vote: 5.2/10 (586 votes) Platform: Windows

Thunderbird Portable102.4.2

A mail client for mobile devices that supports POP and IMAP email account types 

PRO: Fits easily on a USB pen drive
CON: Synchronisation with mail server can be problematic
Vote: 4.7/10 (22 votes) Platform: Windows

SMS Backup1.5.11

Backup SMS, MMS and call history to Gmail, Google Calendar or IMAP.

Vote: 4.5/5 (94 votes) Platform: Android


Mail support for all email accounts: IMAP, ActiveSync, EWS, POP3

Vote: 4.5/5 (44 votes) Platform: Android

Aqua Mail1.38.1

Email app for Gmail, Yahoo, Outlook, Hotmail and more - IMAP, POP3 and Exchange

… array of email services. Owing to its support for standard internet email protocols such as IMAP, POP3 …

Vote: 4.5/5 (42 votes) Platform: Android

Nine Mail4.9.4b

Nine is a full-fledged and intuitive email app which supports Exchange and IMAP

Vote: 4.5/5 (105 votes) Platform: Android

CosmoSia4.1.4 rev:c10c345 build:871

Free email app for SMS Gmail Outlook Yahoo AOL iCloud Exchange IMAP POP3

Vote: 3.5/5 (73 votes) Platform: Android

K-9 Mail6.305

K-9 Mail is a 100% free and open source email client for Android.

… accounts, IMAP push email, and POP3 for both manual and polled mail checks. This Android app provides …

Vote: 4.5/5 (90 votes) Platform: Android

Microsoft Office 2007 Service Pack 21.0

Software pack that fixes bugs and updates Microsoft Office

… the ability to save files as PDF documents. Outlook has also been optimized and will now support IMAP and RSS …

PRO: Important improvements for Excel and Outlook
CON: File size
Vote: 6.4/10 (1267 votes) Platform: Windows

Revolver Mail8.10.0

Secure email application targeted at small businesses

PRO: Lightweight and free to use
CON: Developer site is in German
Vote: 3.8/10 (3 votes) Platform: Windows