Transactional Email

"Email that facilitates an agreed-upon transaction or updates a customer in a existing business relationship."
-US Federal Trade Commission

How is this different from your regular bulk email you send? These are typically:

• bills
• reciepts
• statements
• password conformations
• out of stock notices
• whitepapers
• chat transcripts

These types of messages are exempt from US CAN SPAM regulations, provided that 75% of the message remains transactional.

Consider sending your transactional messages out through their own IP address. This will help insure their deliverability.