Email Client Support Scoreboard

This page ranks email clients based on their support among the 303 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) : 283/303
Apple Mail (iOS) : 280/303
Samsung Email (Android) : 250/300
Mozilla Thunderbird (macOS) : 230/266
ProtonMail (Android) : 223/281
GMX (iOS) : 221/235
WEB.DE (iOS) : 220/234
ProtonMail (Desktop Webmail) : 213/289
ProtonMail (iOS) : 208/288
Mail.ru (Desktop Webmail) : 203/301
SFR (Desktop Webmail) : 196/260
Fastmail (Desktop Webmail) : 195/242
Outlook (iOS) : 188/303
1&1 (Desktop Webmail) : 185/232
Outlook (Android) : 179/302
1&1 (Android) : 177/232
HEY (Desktop Webmail) : 176/243
LaPoste.net (Desktop Webmail) : 176/240
SFR (iOS) : 176/258
Outlook (macOS) : 175/301
Outlook (Outlook.com) : 172/303
GMX (Android) : 172/234
WEB.DE (Android) : 171/232
SFR (Android) : 169/252
Gmail (Desktop Webmail) : 152/303
Yahoo! Mail (Desktop Webmail) : 136/303
AOL (Desktop Webmail) : 131/301
Yahoo! Mail (iOS) : 130/302
AOL (iOS) : 127/291
Yahoo! Mail (Android) : 125/301
AOL (Android) : 123/288
Orange (iOS) : 121/242
Gmail (Mobile Webmail) : 120/293
Orange (Android) : 117/234
Orange (Desktop Webmail) : 116/240
Gmail (Android) : 111/303
Gmail (iOS) : 110/302
GMX (Desktop Webmail) : 98/276
WEB.DE (Desktop Webmail) : 95/266
Outlook (Windows Mail) : 62/297
Outlook (Windows) : 59/302
Mozilla Thunderbird (Windows) : 31/34
Free.fr (Desktop Webmail) : 16/21
T-online.de (Desktop Webmail) : 15/24
WP.pl (Desktop Webmail) : 1/4
RainLoop (Desktop Webmail) : 0/1
LaPoste.net (iOS) : 0/1
LaPoste.net (Android) : 0/1