<del>
HTML element · 20 supported, 0 partial, 0 unsupported across 21 clients
<del> is supported in every email client where behavior is verified, 20 of 21 as of Sep 2, 2026; Superhuman remains untested.
- 7/7 webmail, 5/6 desktop, 8/8 mobile clients support <del> fully.
- Across all clients, only 6 of 298 tracked HTML/CSS features render identically everywhere.
Source: caniemail.com (MIT), via the Emailens engine. Last tested upstream Feb 28, 2019, synced by Emailens Sep 2, 2026.
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.
Client Support
| Client | Category | Engine | Support |
|---|---|---|---|
| Gmail | webmail | Gmail Web | Supported |
| Gmail Android | mobile | Gmail Mobile | Supported |
| Gmail iOS | mobile | Gmail Mobile | Supported |
| Outlook 365 | webmail | Outlook Web | Supported |
| Outlook (New) | desktop | Outlook Web | Supported |
| Outlook Classic | desktop | Microsoft Word | Supported |
| Outlook iOS | mobile | Outlook Mobile | Supported |
| Outlook Android | mobile | Outlook Mobile | Supported |
| Outlook for Mac | desktop | WebKit | Supported |
| Apple Mail | desktop | WebKit | Supported |
| Apple Mail iOS | mobile | WebKit | Supported |
| Yahoo Mail | webmail | Yahoo | Supported |
| Yahoo Mail Android | mobile | Yahoo | Supported |
| Yahoo Mail iOS | mobile | Yahoo | Supported |
| Samsung Mail | mobile | Samsung | Supported |
| Thunderbird | desktop | Gecko | Supported |
| HEY Mail | webmail | WebKit | Supported |
| Proton Mail | webmail | Proton | Supported |
| AOL Mail | webmail | AOL | Supported |
| Fastmail | webmail | Fastmail | Supported |
| Superhuman | desktop | Blink | Unknown |
Client-by-client behaviour for <del>
Fully supports <del> (20): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, Thunderbird, HEY Mail, Proton Mail, AOL Mail, Fastmail.
Behaviour unverified in: Superhuman.
When to use <del> in email
- Showing the original price next to a sale price in promotional emails.
- Indicating outdated information in editorial corrections.
- Marking strike-through items in to-do or change-summary emails.
Rendering behaviour and edge cases
- Default <del> rendering is text-decoration: line-through, but some clients add light-red coloring as an editorial visual.
- Outlook on Windows respects <del> reliably; older Yahoo Mail occasionally strips the strikethrough.
- Pairing <del> with a <span> color override gives the most predictable visual across clients.
Recommended fallback strategy
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.
Related Features
Check your own HTML for <del>
Paste your own, or run the sample below. Analyzed in this page, with no signup and nothing stored.
Test your <del> layout across 21 email clients
Preview rendering, catch CSS issues, and see how <del> displays across Outlook, Gmail, and Apple Mail. Free, no account needed.
Instant live preview · No signup required · 21 email engines
Last tested upstream: · Last synced by Emailens:
caniemail.com (MIT) records Feb 28, 2019 as the last time <del> was tested in a real client, 7 years before this sync. Syncing copies that result forward, it does not re-test it. Carried in @emailens/engine data v0.12.2.