Email was sent when post is updated as well

Hi there!

Thanks for the great plugin, it’s very nice! Easy to use, and works almost perfectly ??

My problem: emails will be sent if I edit and save an existing post, not just when a new post is saved. So, for example, if I correct a little mistake in the text, mail goes out again… Can you fix this? Or I can set this somewhere?

Thanks a lot, best regards:
Eva