Ah I think I did not make it clear 🙂
Right now I do not have a cron job. So I think acymailing inserts a piece of code in my website that triggers the sending of emails, right? Since I cache my website, I think sometimes that could mean the piece of code is loaded many times instead of just once.
Now if I do use a cron job from my cpanel, does this stop the piece of code from acymailing on my website? How does this work?