When “Messages Log Privacy” is enabled, all message content will be hidden (masked with *).

On “Messages Log” and “Campaigns” (“Reports”) sections:

The same goes for the API endpoints that return message content. This setting can be enabled from UI under Settings / Security section:

If you like to enable the Message Log Privacy feature, simply switch "Normal" to "Secure" and input a password.

If you have any questions, please send an email to support@sms.to