As an alternative to the default method of using Email SMS, you can send all requests to a single email address (sms@transmitsms.com) and set the recipient and caller ID in the message body, using X-Headers. This feature is great for CRM systems and other types of integrations that use email to send out alerts but don't want to have to individualise email addresses for the standard email SMS system.

To send Email SMS using X-Headers:

1. Set your email recipient to sms@transmitsms.com

2. Set your from email to the one verified in the Email SMS section of your account: How to set up Email SMS

3. Leave subject blank

4. Set body as

X-Cellphone: {{mobile1}},{{mobile2}}
X-From-Cellphone: {{senderid}}

Your message goes here

The command X-Cellphone: is where the recipient numbers are defined.
The command X-From-Cellphone: is where your verified sender ID is defined.

See example below for correct formatting.

Send to Multiple Recipients

To send to multiple recipients, list the recipients in the X-Cellphone line, separated by a comma. This will generate a broadcast report.