I’m using a static sender email.
Everythings works BUT when I want to reply (using ‘Reply to’ button of gmail, yahoo, hotmail, …..) this autofill with the static email. And that’s not good ….
You need to add a Reply-To header that use the Email input value.
Adding a Reply-To header allow email provider (Gmail, yahoo, hotmail, outlook, roundcube, …) to use this value as a reply address (instead of the static one)