By default, an SMS can be only 160 characters long. When you are using the SMSmailer interface, it will warn you of this limitation when you are sending a longer message. However, when using a file, the message will be empty if you try to go over that 160 characters.
To resolve this:
- Open SMSmailer
- Go to “Settings”
- Go to “General”
- Set “Allow long messages” to “yes”
If this does not resolve your problem, contact us at firstname.lastname@example.org