animation in Outlook 365
Not supported animation is not supported in Outlook 365.
Works in 5 of 21 · partial in 1 · not supported in 15
Which clients
- Works
- Apple Mail, Apple Mail iOS, Samsung Mail, HEY Mail, Fastmail
- Partial
- Superhuman
- Not supported
- Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Thunderbird, Proton Mail, AOL Mail
Your reader in Outlook 365 sees the email without animation, even if it looks right where you tested it.
The fix for Outlook 365
Replace CSS animation with an animated GIF
<!-- Use an animated GIF for the effect -->
<img src="https://example.com/badge-animated.gif"
width="60" height="24" alt="New!"
style="display: inline-block; border: 0;" />Show the original
<style>
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.badge { animation: pulse 2s infinite; }
</style>
<span class="badge">New!</span>The checker needs a computer screen.
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What Outlook 365 does with animation
The Emailens probe for animation on a real install counted as Outlook 365, captured 14 Oct 2026. It shows the problem, not the fix. Where animation is supported it shows: green (red means unsupported).
caniemail: animation is not supported in Outlook 365.
This Outlook.com install drops the <style> in the head, so only inline styles apply.
@emailens/engine 0.18.22 on the original code
Outlook 365 does not support "animation".
Your next question
- Does transform work in Outlook 365?
Works in 7 of 21 · partial in 1 · not supported in 13
fix - Does overflow-wrap work in Outlook 365?
Works in 2 of 21 · partial in 3 · not supported in 13 · 3 untested
fix - Does bimi work in Outlook 365?
Works in 9 of 21 · not supported in 11 · 1 untested
- Does clip-path work in Outlook 365?
Works in 8 of 21 · not supported in 13
- Does block-size work in Outlook 365?
Works in 7 of 21 · not supported in 13 · 1 untested
- Does border-image work in Outlook 365?
Works in 7 of 21 · not supported in 13 · 1 untested
Questions
- How many email clients support animation?
- It works in 5 of 21, partial in 1, not supported in 15.
- What do I use instead of animation in Outlook 365?
- Replace CSS animation with an animated GIF.
- Does animation work in Outlook (New)?
- animation is not supported in Outlook (New). Outlook 365 and Outlook (New) differ on 1 feature: text-shadow.
To see what else in your email Outlook 365 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.
Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 7 Apr 2026 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping