Setting up a Signature in mail.com Mail App for iOS
Set up a signature, i.e. a text snippet that will be appended automatically to any email you send.
Tap the menu symbol in the menu bar.
The menu navigation will appear.
Tap Mail Settings.
Create a signature, e.g. "Sent with my iPhone" or add your personal or business contact information.
If you enter a signature text, it is automatically added to every new e-mail you send.
You can also change or remove this text when writing an e-mail. This does not affect the stored signature.
The signature text can be up to 500 characters long.