Email SMS supports X-Header. You can send all requests to a single email address (firstname.lastname@example.org) and set the recipient and caller ID in the message body. 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.
1. Set your email recipient to email@example.com
2. Set your from email to your authorised email account. Set this in the Email SMS section of your account.
3. Leave subject blank
4. Set body as
This is where the SMS body goes.
The command X-Cellphone: is where the recipient number is defined.
The command X-From-Cellphone: is where the caller ID is defined.
See example below for correct formatting.