Hi, @DesertLilyBilingualSpeech!
In a nutshell, a Manychat Contact is created once someone interacts with your profile, and it turns into a DM. And this happens if they're using keywords in your post comments or if they send you any kind of DM (in this case, a contact is created even if no keyword is used).
So, if someone...
- comments on your post and don't use a Keyword = NO Contact created
- likes, saves or shares your post/ story = NO Contact created
- comments a keyword in some post = Contact created
- sends you a DM (with or without a keyword) = Contact created
- responds to your story = Contact created
You just need to remember: if something triggers any automation and/or interacts with you via DM = Contact created!

Hi @Fabio Gaulke thank you for your answer. I have a follow up scenario. If person A - Erica, comments “freebie” to trigger an automation on one post- contact is created.
But if Person A- Erica comments on a different post “help”, and triggers for a different automation, does this count as a new contact or one that’s established?
Is there a limit to how many “established” contacts you can have or does it save each interaction with the trigger words?
I am just making sure I understand before setting up our first automation.
Thank you,
Luci