IPhone – How to change the default “from” email address for the iOS Mail app

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I changed my "Default Account" in Mail Preferences:

And this changes my default "from" address when I send an email from (say) the Twitter app

But when I use the Mail app to send an email, it uses my old "from" address by default.

Best Answer

If you are creating a new message, then the "default" account will be used. If you are replying to a message in another account, that account will be used as the "from:" address.

It sounds to me like you want to reply to a message received on (say) Hotmail and have the message come "from" a new GMail address. This is not possible to do by default; you will need to change the "from" address manually.