What are the limitations of auto-reply triggers?

Auto-reply triggers have the same limitations as tags. In short:

  • All alphanumeric strings are allowed, with no minimum or maximum length
  • Prompts are not case sensitive
  • Dash, underscore, and space are allowed
  • All other special characters are disallowed, including emojis (#@!& etc.)
  • Protected SMS commands are disallowed (HELP, STOP, UNSUBSCRIBE, etc)