HTML element · data last changed 10 Nov 2026
<del> in email clients
Works in 20 of 21. Untested in Superhuman.
caniemail (MIT) via @emailens/engine 0.18.22
No signup · Five clients free, Outlook Classic included · All 21 with an account
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<del> is not among the 24 features we have screenshotted on real installs. The ones we have →
All 21 clients, problems first
| Client | Support |
|---|---|
| Superhuman | Untested |
Works in 20: Gmail, Gmail Android, Gmail iOS and 17 more. Show all
| Client | Support |
|---|---|
| Gmail | Works |
| Gmail Android | Works |
| Gmail iOS | Works |
| Outlook 365 | Works |
| Outlook (New) | Works |
| Outlook Classic | 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 |
How <del> behaves
The <del> element marks deleted or struck-through content. It is supported in most email clients with default strikethrough styling. In commerce and pricing emails, <del> is a common pattern for showing original prices alongside discounts.
- Default <del> rendering is text-decoration: line-through, but some clients add light-red coloring as an editorial visual.
- Outlook Classic respects <del> reliably; older Yahoo Mail occasionally strips the strikethrough.
- Pairing <del> with a <span> color override gives the most predictable visual across clients.
Set text-decoration: line-through and a muted color explicitly on <del> elements. For maximum reliability, wrap the deleted content in <span style="text-decoration:line-through"> instead of relying on the default <del> rendering.
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