I have a board set up to send notifications via email when a card has been updated (for client support requests).
The email notification is received correctly.
However, on the email there is a link for "Reply via email" and when clicked in a desktop email client or mobile client the email is blank - it looks like you just opened a new email to send which is not helpful at all. When opened directly in a Gmail account (I didn't try with others) it will populate the reply email address.
Why does the reply button not work if you are outside Gmail? And why is it even there if it doesn't work? I would much prefer that to just not be shown and force the client to login to the board, but when they see the Reply link automatically click it then ask me why it doesn't work.