Which endpoint returns all emails between contacts. I know about marketing emails, but it not what I need.
Hi @Sake1,
I hope all is well with you 
Are you looking to retrieve the one-to-one emails sent to contact? If that’s the case, you can use this endpoint: Get all engagements where it’ll return all the engagements and you can loop through to grab those engagement with type == “EMAIL”.
I hope this helps!
Thank you for answering. This is what I need. Is there any possibility to find the user name by his id (createdBy part in response JSON and I had the same problem with author of a file in files metadata.