XF 2.0 Mass email - safe to exit page?

[BlingMuncher]

Hello I meant sending a mass email to a few thousand users, xenforo is taking it’s sweet time, but I can’t complain.
I’m on the window below, if I exit this window, will the job continue?
Thanks.

 

[BlingMuncher]

It appears URL/admin.php/tools/runjob must remain open.. figured out by mistake.