Wednesday, May 15, 2013

Comcast Delivery Notes

Rate limits for Comcast

Recipients per HourSenderScore*
3,6000 - 15
7,200N/A & 16 - 25
14,40026 - 30
28,80031 - 50
50,40051 - 70
72,00071 - 85
86,40086 - 100
*Subject to successful authentication

Recommended Delivery Settings

Comcast allows 25 simultaneous connections per sending IP address.
Comcast allows 100 recipients per message.
Comcast allows a throttle rate based on your sender reputation and authentication.