You can use mail.com with 3rd party email applications by activating IMAP and POP3.
For a more comfortable solution, we recommend using the free mail.com Mail App for Android and iOS.
Info:
Please note that the use of POP, IMAP and SMTP are mail.com
Premium features only.
If you would like to use these protocols to receive your emails, please upgrade your account
to a Premium account. For more information please visit the Premium upgrade page.