Yes: you can now create Facebook Messenger ads which offer an unprecedented reengagement opportunity for brands and businesses.
This new kind of ads is available on Facebook’s Messenger bots platform — for brands who already have chat bots configured — and will appear in Messenger threads instead of News Feeds.
According to The Next Web, in order to prevent spamming, companies won’t be able to target all Facebook users:
Their mailing list will only consist of people that have messaged them in the past requesting information from a bot.
Facebook Messenger ads introduce a new way to connect with users and, if used properly, open the path to new level of fan-brand interactions and customer service.