The following tables compare general and technical features of a number of notable email client
Basic general information about the clients: creator/company, O/S, licence, & interface. Clients listed on a light purple background are no longer in active development.
A brief digest of the release histories.
Operating system support
on which the clients can run natively (without emulation).
Communication and access protocol support
What email and related protocols and standards are supported by each client.
SSL and TLS support
Information on what features each of the clients support.
Database, folders and customization
Templates, scripts and programming languages
The Bat! supports Email Address Internationalization (EAI).
As of October 2016, email clients supporting SMTPUTF8 included Outlook 2016,
mail for iOS, and mail for Android.
Comparison of feed aggregators
Comparison of layout engines
Comparison of mail servers
Comparison of webmail providers
List of personal information managers
Unicode and email