The Mail app also supports the use of an alias when sending messages.

Learn how to use a Gmail alias in iOS Mail using anyiPadoriPhonerunningiOS 12or later.

Go toSettings>Mail>Accounts.

IMAP-enabled email account in iOS Settings

In theIMAP Account Informationsection, tap the arrow next to theemailaddress.

Use anenrolled Gmail account aliashere.

Add as many addresses as you need.

Arrow next to Email account in iOS Settings

When you’re finished, tapAccountto return to the previous screen, then selectDone.

Your new address is now ready to use.

Tap the default From address again to display all enrolled email addresses.

Add Another Email in iOS Settings

However, you gain access to send-as aliases, which Gmail prohibits on the iOS Mail app.

Account back button in iOS Email Settings

Multiple addresses in New Message on iOS