I use a Hover email address. With GMail and iCloud Mail, it's possible to set the reply-to field so that email addresses from those accounts look like they were sent from the Hover email address. Please implement that feature. I can set Hover to forward emails to my protonmail account. I just need the reply-to to look correct. As it turns out iCloud does not support this on their browser email. It only works on Mac application and IOS app.
I use a Hover email address. With GMail and iCloud Mail, it's possible to set the reply-to field so that email addresses from those accounts look like they were sent from the Hover email address. Please implement that feature. I can set Hover to forward emails to my protonmail account. I just need the reply-to to look correct. As it turns out iCloud does not support this on their browser email. It only works on Mac application and IOS app.
https://www.hover.com/email