How Can I Run a Facebook Messenger Giveaway?

Subscribe on Messenger is available on the Pro Plan and above.

1. Add the Subscribe on Messenger Action. Pick your connected account and choose the Facebook Page. Only pages you moderate are listed.
2. Add a Description and a Default Message. A keyword in the message can trigger your bot's automations.
3. Turn on Require Authentication to make entrants sign in with Facebook first.
4. Combine it with Viral Share and email signups.

You can send promotional messages in the first 24 hours after someone subscribes. After that, the window restarts only when they message you again.