If you have a list of contacts that have already opted-out of communications with you, you can upload those contacts to Textla with the OptedOut status. You can do this by following these steps:
First, create a CSV with the appropriate columns. You'll need to have "OptedOut" populated in the "Status" column to mark a contact as Opted-Out within Textla (see below)
First Name | Last Name | Phone | Status |
John | Smith | (555)555-5555 | OptedOut |
Jane | Doe | (555)555-5556 | OptedOut |
Next, head to your Contacts Page to Import Your Contacts and choose your import method.