Hey guys! This might be a novice question, but I need to ask it for precaution: how to mail a small number of leads from my own domain and avoid getting blacklisted. I'm setting up a campaign, and I have 84 contacts to invite to an event. The mail I will be sending is a personalised script which invites users to my new domain (~2 weeks old), where they see a presentation and can send a message. It is important to send the message roughly at the same time (~2-3 hours). Do you think I will get blacklisted? Should I consider investing in a dedicated email service?