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How do contacts opt in to SMS?

Frank Hagan

I want to send SMS messages to my contacts. How do they opt in? Can I import their cell numbers?


Official comment


You can have prospects send an SMS to your ONTRAPORT SMS number to opt in. The SMS message must have all the data on one line with elements separated by a space (and not on a separate line).

The accepted formats are:

1. Email address. Example:

2. Firstname Email. Example: Bob

3. Firstname Lastname Email. Example: Bob Smith

see details at

You can also have an opt in form with the SMS number field for the contacts to opt in using the form. 

Frank Hagan

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