Other message box

Ive created a bot which messages members who post in a group that I am member of.

I know if you have mutual friends with the person you message they get your(my) message to there inbox.

If these people are members of the same group does the same apply

Basically do my messages go to their inbox or there other box?

you can create bots but cant test this on your own?
and my assumption is NO, its not going to go to inbox.

My test shows it goes to other inbox. Why not test it? There's no harm if they don't see your msg anyway.

Outsourced ..