User:Helpfoss/Comparison of e-mail clients

The following tables compare general and technical features of a number of e-mail client programs. Please see the individual products articles for further information. This article is not all-inclusive or necessarily up-to-date.

General
Basic general information about the clients: creator/company, licence/price etc. Clients listed on a light purple background are no longer in active development.

Operating system support
The operating systems on which the clients can run natively (without emulation).

Communication and access protocol support
What e-mail and related protocols and standards are supported by each client.

Features
Information on what features each of the clients support.

General features
For all of these clients, the concept of "HTML support" does not mean that they can process the full range of HTML that a web browser can handle. Almost all email readers limit HTML features, either for security reasons, or because of the nature of the interface. CSS and JavaScript can be especially problematic. A number of articles describe these limitations per-email-client; see 1, 2, 3, and 4