The visual template editor really needs some attention.
The editor itself works fine, but everything that is not in the editor window itself severely lacks functionality and quality of life.
Especially two points really set us back with trying to use the mailgun templates.

1. When setting up a new templates there are options to set Subject from and reply-to adresses. Unfortunately these values are NOT EDITABLE, instead the support told me I would need to delete and completely re-create my template to change them.

2. Which leads to point two, duplicating or reusing a template is impossible, there is no way to copy a template to make a second modified version. Which obviously our Signup, Login, Forgot password, etc. Emails all share a lot of elements which need to be painstakenly be re-created for every email. Which especially when using several sending Domains is just an impossible ask, with a huge change of errors.

ps. is it really necessary to make me jump through so many hoops just to post some feedback, even though I already have a mailgun account?