To schedule an individual message in Textline, you have a few options.
From your Dashboard, you can find or start a Conversation with the contact you'd like to message. Then, select the Message Options Menu icon.
Then, select Schedule.
The scheduling box will appear. Enter your message and select your date, time, and time zone. Then, select Schedule.
To view Scheduled Messages (Sent, Scheduled, and Cancelled), or for another way to schedule a message, select the Bolt icon > Scheduled Messages.
From this dashboard, you can toggle between lists of Sent, Scheduled, and Cancelled messages. You can edit or cancel scheduled messages before they are sent, or restore cancelled messages.
To schedule a message from here, select the blue Schedule a Message button.
Enter your message; the recipient's phone number; the date, time and time zone for delivery; the Department from which the message should come (if you have multiple Departments), and select Schedule.
Watch the video on Scheduled Messages here.