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.


  • 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.

Service CodeService DescriptionUnit of MeasurementRateNotes
E108SMTP RelayIP Address/Month$10.39

Subscriptions to this service are available. Rates may also be referenced in the CDT Rate Schedule.

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

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SMTP Relay Enrollment Process Graphic

SMTP Relay Enrollment Process