We regularly test these email clients using internal test tools and Email on Acid.
All the options work properly. Fallback elements show for web fonts.
Apple Mail 12 & 13
Microsoft Outlook for Mac 2011, 2016
Microsoft Outlook for Windows 2010, 2011, 2013, 2016, 2019*
* Web fonts are not supported
Android: Pixel Gmail Android 6, 7, and 8
Samsung Mail Android 7
Gmail App (iOS)
Gmail App (Android)
iOS Mail (iPhone & iPad)
Outlook App (Android & iOS)
Yahoo App (Android & iOS)
Note: none of the above services supports web fonts
Partial support for some options
Messages display correctly, but some options (with low impact) may not display as expected.
Microsoft Outlook 2013 in high-resolution displays *
Microsoft Outlook 2016 in high-resolution displays **
Microsoft Outlook 2000, 2002 & 2003 ***
*Web fonts are not supported. Applies a font resize that may expand the layout.
** Web fonts are not supported. Applies a font resize that may expand the layout. The text is scaled at 200% by default in some devices.
*** Web fonts are not supported. Buttons don't display round corners. Social icons are not flexible.
Not yet supported
This list includes new and updated mobile email clients with compatibility issues.
Huawei Mail App (Android)
Only basic settings works
When sending to these clients, we recommend using text and images in a simple one-column layout.
Lotus Notes 7, 8 & 8.5
Windows 10 Mail
IBM Notes 9
Web clients (mobile versions)
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