Syncing email addresses
Hello
It is necessary to manually add email addresses to all devices over and over again.
I request you to set share or share to all devices using icloud backup.
example1: macbook email address entered (iphone share, ipad share) When the e-mail address is shared, it will be seen on other devices and will ask for verification.
example2: "iPhone" Mail platform will ask for permission to register logins on different devices. When you log in, the e-mail address will also be active on the iPhone.
In the password section, the page, the relevant e-mail and the password are stored. Calling the data from there if needed.
Thank you for your attention and good luck.
Best Regards