Send the first small campaign.

Steps

Create an account and sign in. Choose the free plan if you are still testing. Limits apply immediately.

Add a mailbox with the SMTP host, port, username, and password your provider documents. Send nothing until that account authenticates.

Create a campaign, paste a short list, and run verification. Read every risky or invalid row. Submit the copy for approval if someone else should see it, or send it if you are the only operator.

Watch failures before you watch opens. Fix the mailbox or the list first.