Address and send email in Mail on iPhone
In the Mail app , you can send email from different accounts, mark addresses from outside certain domains, and more.
Send an email from a different account
Tap the From field to choose an account.
Mark addresses outside certain domains
When you’re addressing an email to a recipient who’s not in your organization’s domain, you can have the recipient’s name colored in red to alert you.
Go to Settings > Mail > Mark Addresses, then enter the domains that you don’t want marked.
You can enter multiple domains separated by commas (for example, “apple.com, example.org”).
Change a recipient from Cc to Bcc
After you enter recipients, you can drag them from one field to another or change their order.
Automatically send a copy to yourself
Go to Settings > Mail, then turn on Always Bcc Myself.