SMS to Email trunk settings reference#

This reference describes the fields available when creating or editing an SMS to Email trunk. The settings are grouped by the form sections shown in the DIDWW User Panel.

For configuration steps, see Create an SMS to Email trunk or Manage SMS to Email trunks.

General settings#

The General section identifies the trunk and defines how incoming SMS messages are forwarded by email.

Field	Availability	Description
Friendly name	Required	Unique name used to identify the trunk. For example, `Support inbox`.
Recipient email	Required	Email address where incoming SMS messages are delivered. Enter one valid email address. For example, `sms@example.com`.
Email subject	Required	Subject line of the forwarded email. Variables are supported. Default: `SMS received from {SMS_SRC_ADDR} to {SMS_DST_ADDR}`.
Email body	Required	Body content of the forwarded email. Variables are supported. Default: `{SMS_TIME}` and `{SMS_TEXT}`, separated by an empty line.

Email subject and body variables#

You can use the following variables in the Email subject and Email body fields to customize the output. Each variable is replaced with the corresponding value from the received SMS.

Variable	Description	Example
`{SMS_TIME}`	The time the SMS was received, in UTC.	`Thu, 22 Oct 2026 07:32:14 GMT`
`{SMS_SRC_ADDR}`	The sender address. A phone number is shown in international format without the plus sign. Some senders use an alphanumeric sender ID instead of a phone number.	`15551234567`
`{SMS_DST_ADDR}`	The DID number that received the SMS, in international format without the plus sign.	`15557654321`
`{SMS_TEXT}`	The raw text of the SMS message. For a long SMS sent in several parts, the complete, reassembled text. See SMS encoding reference.	`Hello World!`
`{SMS_TEXT_BASE64_ENCODED}`	The SMS message text encoded in Base64.	`SGVsbG8gV29ybGQh`

Trunk group settings#

The optional Trunk Group Configuration section assigns the trunk to an existing SMS trunk group.

Field	Availability	Description
Assign to trunk group	Optional	Existing SMS trunk group to which the trunk is assigned.
Priority	Optional	Priority of the trunk within the selected trunk group. It determines the order in which trunks will be used. The system attempts to contact the target SMS trunk with the highest-numbered priority first. Trunks with the same priority are tried in a random order. Range: `0` to `32767`. Default: `1`.