Pressing enter does not validate the "send test email" form

[Canapin (Coin-coin le Canapin)]

A very minor issue :
After entering an email address, I think pressing the enter key should activate the button “send test email”. Currently, it does not.

[zogstrip]

@david Is that a button that might benefit from type=submit?

[david (David Taylor)]

Sure

UX: Allow enter key to submit test email in admin panel