CSS property · data last changed 10 Nov 2026
widows in email clients
Works in 10 of 21. Not supported in Gmail, Gmail Android, Gmail iOS and 5 more. Untested in Thunderbird, HEY Mail and Fastmail.
Your reader in Outlook Classic sees the email without widows, even if it looks right where you tested it.
caniemail (MIT) via @emailens/engine 0.18.22
What to do instead in Outlook Classic
There is no drop-in fix for widows in Outlook Classic. Design so the email still reads without it.
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widows is not among the 24 features we have screenshotted on real installs. The ones we have →
All 21 clients, problems first
| Client | Support |
|---|---|
| Gmail | Not supported See caveat 1 |
| Gmail Android | Not supported See caveat 2 |
| Gmail iOS | Not supported |
| Outlook Classic | Not supported |
| Yahoo Mail | Not supported |
| Yahoo Mail Android | Not supported |
| Yahoo Mail iOS | Not supported |
| AOL Mail | Not supported |
| Thunderbird | Untested |
| HEY Mail | Untested |
| Fastmail | Untested |
Works in 10: Outlook 365, Outlook (New), Outlook iOS and 7 more. Show all
| Client | Support |
|---|---|
| Outlook 365 | Works |
| Outlook (New) | Works |
| Outlook iOS | Works |
| Outlook Android | Works |
| Outlook for Mac | Works |
| Apple Mail | Works |
| Apple Mail iOS | Works |
| Samsung Mail | Works |
| Proton Mail | Works See caveat 1 |
| Superhuman | Works |
Caveats (2)
- 1. Gmail, Proton Mail: Webmail rendering depends on browser support
- 2. Gmail Android: Not supported, but Gmail's default styles on the email message container includes the
widowsproperty. These values are inherited by children elements
Caveats as recorded by caniemail (MIT), one entry per wording.
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