Simple Mail Transfer Protocol (SMTP) Relay

SMTP Relay provides Customers the ability to send outbound email from devices (such as printers or servers) or applications.

This offering is classified as a Current Service.



  • Enable printers or applications to send email
  • Send emails from any IP address


  • IP Based Authentication
  • Maximum 30 MB message


  • Allows emails coming from your chosen IP address to go through without authentication

Please contact your CDT Account Lead for questions related to this service.

For technical issues related to SMTP Relay, please contact the CDT Service Desk at (916) 464-4311 or submit an Incident.

Subscriptions to this service are available and can be referenced in the CDT Rate Schedule.

Service CodeService DescriptionUnit of MeasurementRateGroupComment(s)
E108SMTP RelayIP Address/Month$10.39Statewide E-Mail

To request an SMTP Relay account, or to Add, Change or Delete maintenance activities, please submit a service request:

Request Service Now
SMTP Relay Enrollment Process Graphic

SMTP Relay Enrollment Process