CSS property · data last changed 10 Nov 2026
text-decoration-color in email clients
Works in 17 of 21. Not supported in Outlook Classic. Partial in Gmail Android and Gmail iOS. Untested in Superhuman.
Your reader in Outlook Classic sees the email without text-decoration-color, even if it looks right where you tested it.
caniemail (MIT) via @emailens/engine 0.18.22
What to do instead in Outlook Classic
- Not supported, but the proprietary
text-underline-colorproperty can be used instead.
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text-decoration-color is not among the 24 features we have screenshotted on real installs. The ones we have →
All 21 clients, problems first
| Client | Support |
|---|---|
| Outlook Classic | Not supported See caveat 2 |
| Gmail Android | Partial See caveat 1 |
| Gmail iOS | Partial See caveat 1 |
| Superhuman | Untested |
Works in 17: Gmail, Outlook 365, Outlook (New) and 14 more. Show all
| Client | Support |
|---|---|
| Gmail | Works |
| Outlook 365 | Works |
| Outlook (New) | Works |
| Outlook iOS | Works |
| Outlook Android | Works |
| Outlook for Mac | Works |
| Apple Mail | Works |
| Apple Mail iOS | Works |
| Yahoo Mail | Works |
| Yahoo Mail Android | Works |
| Yahoo Mail iOS | Works |
| Samsung Mail | Works |
| Thunderbird | Works |
| HEY Mail | Works |
| Proton Mail | Works |
| AOL Mail | Works |
| Fastmail | Works |
Caveats (2)
- 1. Gmail Android, Gmail iOS: Partial. Not supported with non Google accounts.
- 2. Outlook Classic: Not supported, but the proprietary
text-underline-colorproperty can be used instead.
Caveats as recorded by caniemail (MIT), one entry per wording.
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