Managing your subscriber list is key to keeping your subscribers happy.
Maintaining good list management is a key element in keeping your users happy. Sending email to someone who has unsubscribed or never signed up in the 1st place is a big no-no in the email game.
Make sure to check your list statistics. You can do this in Marketing Campaigns by clicking on the stats button next to your recipient list name. You can also manage your unsubscribes by clicking the manage unsubscribes button next to your recipient list name.
Make sure you are sending mail to people who actually want your mail. Otherwise, you will get lots of spam reports, blocks, and bounces.
Finally, make sure you do not buy email lists or engaging in Email Harvesting. For tips on getting your messages to the Inbox, please see our email deliverability page.