SMS Reminders allow end-users to be reminded of events at specified recurring intervals. Examples include reminding somebody of an appointment or oil check.
You can set a default reminder interval which is set if the end-user texts the keyword, but the user can also specify a different reminder interval by texting the keyword followed by any integer value.

Keyword: This is what end-users must text to the short code to activate the campaign. End-users will receive the first reminder message X days from when they texted the keyword, where X is the Default Reminder Interval specified.

Default Reminder Interval: This is the interval (in days) in between the reminder messages.

Reminder Message: This is the actual reminder message which is sent to the end-user every X days after texting the keyword.

Confirmation Message This message is sent back to the end-user upon texting the keyword, in order to confirm his entrance into the SMS Reminder program.

Help Message: This message is sent back to the end-user when HELP is texted subsequent to texting the keyword. This message is required by U.S carriers regardless of campaign type, and must disclose rate information, opt-out instructions, and a customer care email address or Toll-Free number.

Stop Message: This message is sent back to the end-user when STOP is texted subsequent to texting the keyword. The subscriber is removed from our subscriber databases. This message is required by U.S carriers regardless of campaign type.