Email Client Support Scoreboard

This page ranks email clients based on their support among the 302 HTML and CSS features listed on Can I email.

(Because every test is done manually, some features might not have been tested on every email client.)

Apple Mail (macOS) : 282/302
Apple Mail (iOS) : 279/302
Samsung Email (Android) : 250/300
Mozilla Thunderbird (macOS) : 229/265
WEB.DE (iOS) : 220/234
GMX (iOS) : 220/234
ProtonMail (Android) : 215/270
ProtonMail (Desktop Webmail) : 204/278
Mail.ru (Desktop Webmail) : 202/300
ProtonMail (iOS) : 200/277
SFR (Desktop Webmail) : 196/260
Fastmail (Desktop Webmail) : 195/242
Outlook (iOS) : 187/302
1&1 (Desktop Webmail) : 185/232
Outlook (Android) : 178/301
1&1 (Android) : 177/232
HEY (Desktop Webmail) : 176/243
LaPoste.net (Desktop Webmail) : 176/240
SFR (iOS) : 176/258
Outlook (macOS) : 174/300
Outlook (Outlook.com) : 172/302
GMX (Android) : 172/233
WEB.DE (Android) : 171/232
SFR (Android) : 169/252
Gmail (Desktop Webmail) : 152/302
Yahoo! Mail (Desktop Webmail) : 135/302
AOL (Desktop Webmail) : 130/300
Yahoo! Mail (iOS) : 129/301
AOL (iOS) : 126/290
Yahoo! Mail (Android) : 124/300
AOL (Android) : 122/287
Orange (iOS) : 121/242
Gmail (Mobile Webmail) : 120/292
Orange (Android) : 117/234
Orange (Desktop Webmail) : 116/240
Gmail (Android) : 111/302
Gmail (iOS) : 110/301
GMX (Desktop Webmail) : 98/275
WEB.DE (Desktop Webmail) : 95/265
Outlook (Windows Mail) : 62/296
Outlook (Windows) : 59/301
Mozilla Thunderbird (Windows) : 31/34
Free.fr (Desktop Webmail) : 16/21
T-online.de (Desktop Webmail) : 15/23
WP.pl (Desktop Webmail) : 1/4
RainLoop (Desktop Webmail) : 0/1
LaPoste.net (iOS) : 0/1
LaPoste.net (Android) : 0/1