Gmail same thread response!

[habib]

I was looking for a solution to reply to a gmail email and accidentally I put RE behind the Subject. And to my surprise, it joined the incoming email. Can anybody explain this? I have not experimented more but what if two subject are the same. I don’t understand how Gmail process it.

Here is another thread related:

Automation for sending email - BUT - in the same thread as before instead of making a "new" email/thread

Hi all, Just wondering if it is possible to do an automation where make creates an email in a thread already going back and forth. Say if I talk to someone over mail (Headline being for example “Request”), and they reply to it in the same thread (“RE:request”). Could I make an automation that creates and sends a reply IN that same “RE:request” thread, instead of just sending a “new” mail (that doesn’t show the previous chat exchange). Sorry if it sounds complex, tried to be as clear as possib…