Set E-Mail to send to when out of focus, instead of having to press enter.

Might just be me, but I’ve seen posts requesting to automatically focus to the adress field when creating a new mail. What somewhat annoys me (its still bearable lol) is that when entering the mail to send to, it doesn’t set it when focusing on the message field, instead I have to press enter.

As said that might just be me being used to Gmail but I would appreciate if there was atleast an option to make every user enable/disable it manually.