When responding to emails with a Pass alias, display the alias address that recipient will see, instead of the core Proton address that it was fwded to.

Absolutely love that we can send emails FROM Pass aliases - something I always wished for when using iCloud hide-my-email.

I tested it out with a non-Proton email of mine:
1) Sent an email to a Pass alias.
2) Checked Pass, and saw that a contact was automatically created for that alias, as it should.
3) Responded to the email from Proton Mail.
The response received in my non-Proton inbox did show that it came from the alias, but when sending it from Proton Mail the "from" field showed my main Proton email address. It just makes it really hard to be confident enough to actually use the feature.