Set a Delay Between Auto Emails To Ensure Optimal Deliverability

Email delivery services such as Google and Microsoft always monitor the rate at which their users send messages in order to prevent spammers from abusing their services. While they have traditionally only looked at the number of messages being delivered per hour and per day, many services are now looking at how many messages send per minute as well. Because of this, setting only hourly and daily limits in Apollo (detailed here) is no longer enough to ensure that the rate at which your Apollo emails send doesn't cause your mailbox to be flagged as a possible spammer. 

This is where our minimum delay feature comes into play. If you select one of your mailboxes from Settings > You > Mailboxes, you will see the field that controls this underneath 'Minimum Delay Between Emails':

The value you enter will be processed in seconds. You can use only whole integers between 1 (minimum) and 90 (maximum). 

Best Practice is to divide 1 hour in terms of seconds (3600 seconds) by your "Maximum # of Emails to Send Per Hour" to confirm the maximum delay you can set between emails while still sending your full hourly limit.

Example:

Max # of emails to send per hour = 100

3600 seconds per hour / 100 emails sent per hour = 36 second delay

If you enter in a minimum delay that would cause you to send less than what your maximum hourly limit allows, however, we will show you a warning. To make things as clear as possible, the warning is dynamic and will indicate exactly how many emails you can send per hour if you leave your delay set as-such.

In the example below, I've set a max of 100 messages per hour, but a delay of 60 seconds between each message. This effectively reduces my hourly max to 60 messages per hour, which is reflected in the warning: "At most 60 emails/hour (lower than your entered limit of 100 emails/hour)":

Related Resources:

• Link your Email Mailbox to Apollo
• Setting Sending Limits and Signature by Mailbox
• Troubleshooting Mailboxes
• What Email Service Providers Does Apollo Support for Linked Mailboxes