Multiple SMTP Accounts
Use multiple SMTP accounts to increase the number of messages you can send at a time. For instance, if you have 9 SMTP accounts, and every account lets you send 100 messages per hour, you can deliver up to 900 email messages at a time without pausing sending. You need to use throttling in this case for every SMTP account so that the program could switch between accounts automatically. SMTP accounts can be excluded from sending by using the checkboxes next to account host names in the SMTP account list.