Smart Throttling

You can use throttling to reduce SMTP server load and to obey the limits your email provider applies to your email account. Some email providers allow you to send not more than a certain number of messages per hour or day. Use throttling to modify sending behaviour by pausing sending automatically for a certain time interval after a certain number of messages is sent. Throttling can also be used with multiple SMTP accounts to switch between SMTP accounts automatically when account limits are reached.