<video> in Fastmail
Not supported <video> is not supported in Fastmail.
Works in 3 of 21 · partial in 2 · not supported in 16
Which clients
- Works
- Outlook for Mac, Apple Mail, Thunderbird
- Partial
- Apple Mail iOS, Samsung Mail
- Not supported
- Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, HEY Mail, Proton Mail, AOL Mail, Fastmail, Superhuman
Your reader in Fastmail sees the email without <video>, even if it looks right where you tested it.
The fix for Fastmail
Replace video with animated GIF or linked thumbnail
<a href="https://example.com/watch" target="_blank">
<img src="https://example.com/video-thumb.gif"
width="600" alt="Watch the video"
style="display: block; border: 0; max-width: 100%;" />
</a>Show the original
<video width="600" autoplay muted>
<source src="demo.mp4" type="video/mp4">
</video>The checker needs a computer screen.
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What Fastmail does with <video>
@emailens/engine 0.18.22 on the original code
Fastmail does not support <video> elements.
caniemail record, tested upstream 16 Sep 2019
- Not supported. The
<video>element and all its content is removed.
Your next question
- Does <form> work in Fastmail?
Works in 10 of 21 · partial in 4 · not supported in 7
fix - Does <svg> work in Fastmail?
Works in 5 of 21 · partial in 1 · not supported in 15
fix - Does <link> work in Fastmail?
Works in 3 of 21 · not supported in 18
fix - Does <marquee> work in Fastmail?
Works in 8 of 21 · partial in 6 · not supported in 6 · 1 untested
- Does <body> work in Fastmail?
Works in 5 of 21 · partial in 9 · not supported in 6 · 1 untested
- Does <dialog> work in Fastmail?
Works in 5 of 21 · not supported in 15 · 1 untested
Questions
- How many email clients support <video>?
- It works in 3 of 21, partial in 2, not supported in 16.
- What do I use instead of <video> in Fastmail?
- Replace video with animated GIF or linked thumbnail.
- Does <video> work in Apple Mail?
- <video> works in Apple Mail. Closest to Fastmail: Apple Mail, which agrees on 192 of the 235 features both are tested on.
To see what else in your email Fastmail does not support, paste the whole email.
No signup · Five clients free, Outlook Classic included · All 21 with an account
The checker needs a computer screen.
caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 16 Sep 2019 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping