Workflow criteria: exclude contacts who already received another email
SOLVE
Hello everyone!
I have been setting up HubSpot for our non-profit. While I was figuring out some things about automation, I sent out some emails manually, for instance a welcome email for people who join the organization.
Now I have a properly set up welcome email that I'd like to send out whenever somebody joins. However, I would like to exclude those people who already received the welcome email when I sent it out manually a while back.
What criteria should I be choosing in the workflow setup to accomplish that?