Yes, you can add a HostMantis email account in your Gmail account as a POP3 account in Settings --> Accounts and Import --> Add a POP3 mail account you own
Username: This will be your full email address i.e. firstname.lastname@example.org
Password: The password for this email account
POP Server: This will be the server hostname (Your server hostname can be found in your account information email we sent you upon signup)
Leave a copy of retrieved message on the server.
Always use a secure connection (SSL) when retrieving mail.