Email Client Support Scoreboard

This page ranks email clients based on their support among the 308 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) : 288/308
Apple Mail (iOS) : 283/306
Samsung Email (Android) : 252/304
ProtonMail (Android) : 239/302
Mozilla Thunderbird (macOS) : 231/268
ProtonMail (Desktop Webmail) : 226/308
GMX (iOS) : 223/237
ProtonMail (iOS) : 222/307
WEB.DE (iOS) : 221/235
Mail.ru (Desktop Webmail) : 204/302
SFR (Desktop Webmail) : 196/260
Fastmail (Desktop Webmail) : 195/242
Outlook (iOS) : 191/305
1&1 (Desktop Webmail) : 185/234
Outlook (Android) : 181/307
1&1 (Android) : 177/232
Outlook (macOS) : 176/306
HEY (Desktop Webmail) : 176/243
LaPoste.net (Desktop Webmail) : 176/240
SFR (iOS) : 176/258
Outlook (Outlook.com) : 173/308
GMX (Android) : 173/236
WEB.DE (Android) : 171/233
SFR (Android) : 169/252
Gmail (Desktop Webmail) : 154/308
Yahoo! Mail (Desktop Webmail) : 139/308
AOL (Desktop Webmail) : 134/305
Yahoo! Mail (iOS) : 131/305
Yahoo! Mail (Android) : 128/306
AOL (iOS) : 128/293
AOL (Android) : 126/293
Orange (iOS) : 121/242
Gmail (Mobile Webmail) : 120/298
Orange (Android) : 117/234
Orange (Desktop Webmail) : 116/240
Gmail (Android) : 111/308
Gmail (iOS) : 111/307
GMX (Desktop Webmail) : 97/279
WEB.DE (Desktop Webmail) : 94/269
Outlook (Windows Mail) : 62/300
Outlook (Windows) : 59/307
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