General SMTP protocol parameters are defined on this tab.
Number of threads - number of threads for simultaneous mailbox checkup.
Number of retries - number of times the program will try to establish connection to mail server for mailbox checkup.
Custom HELO domain - domain name or IP address used to connect to mail server. Some servers
demand this parameter is not empty and check this IP address is valid. You can set the correct IP-address
automatically by pressing Resolve My IP button.
Custom MAIL FROM - e-mail address sent to mail server as a parameter of MAIL FROM command. In theory this can be
fake, however, some mail servers do analyze it. Thus it is not recommended to delete this parameter or use a fake address.
Email Filters Settings
Additional procerssing Settings