Gmailは返信用のメールアドレスではなく、通知用のメールアドレスを使用しています

[pfaffman (Jay Pfaffman)]

@nathank

However, the Gmail web interface, when I click ‘Reply’, I get the From address, not the Reply-to address:

That doesn’t seem right. We see the reply-to.

@nathank

This has also caught out a few of our users, who seem to be using Outlook.

That makes it more strange.