How many email clients support transition?

It works in 4 of 21, partial in 7, not supported in 10.

Does transition work in Gmail iOS?

transition is not supported in Gmail iOS. Closest to Gmail Android: Gmail iOS, which agrees on 273 of the 300 features both are tested on.

transition in Gmail Android

Not supported transition is not supported in Gmail Android.

Works in 4 of 21 · partial in 7 · not supported in 10

Which clients

Works: Apple Mail, Apple Mail iOS, Thunderbird, Fastmail
Partial: Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, HEY Mail, AOL Mail, Superhuman
Not supported: Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Proton Mail

What to do instead in Gmail Android

Transitions don't work in email; style the default state well

instead

8 lines

.button {
  /* Use the most visually appealing state as default.
     :hover is only supported in a few clients. */
  background-color: #6d28d9;
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
}

Show the original

before

7 lines

.button {
  background-color: #6d28d9;
  transition: background-color 0.2s;
}
.button:hover {
  background-color: #5b21b6;
}

A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →

Your next question

Every feature in Gmail Android · transition in every client

Questions

How many email clients support transition?: It works in 4 of 21, partial in 7, not supported in 10.
What do I use instead of transition in Gmail Android?: Transitions don't work in email; style the default state well.
Does transition work in Gmail iOS?: transition is not supported in Gmail iOS. Closest to Gmail Android: Gmail iOS, which agrees on 273 of the 300 features both are tested on.

To see what else in your email Gmail Android does not support, paste the whole email.

Check your email, free

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 29 Mar 2024 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping