The SMS by MESA app allows you to build a workflow that sends an SMS message in seconds. You can customize the phone number and edit the message by using Variables. All messages will be sent from this phone number +1 510 567 7078.

🗒 Note: SMS by MESA is a Premium app. Premium apps are double the fun, double the automation. When a workflow with a Premium app runs a single automation, MESA counts it as two automations. Learn more

Prohibited messaging practices

All messages must adhere to the codes of conduct published by mobile network operators (AT&T, T-Mobile, Verizon). If a message sender is observed sending any disallowed content, including sending unsolicited messages, phishing, or filter evasion, we will suspend your MESA account immediately.  

All messages sent must comply with the opt-in requirements outlined in the CTIA guidelines. In short, businesses should send messages to customers only after receiving opt-in permission. Also, message senders should not use opt-in lists that have been rented, sold, or shared. 


  • The built-in SMS app only supports sending messages to the United States and Canada.
  • The message body has a maximum length of 160 characters (after variable replacements have been made). If your message is longer than 160 characters, the task will be marked as Fail and no message will be sent.
  • To avoid all of these limitations, consider using the Twilio app, which has fees per message sent and requires additional configuration.