Do everything possible to remove lapsed, bounced, or old email addresses to increase the possibility of getting your emails into the inbox.

Set up a backup IP address so you will get through to the inbox even if you are blocked by an ISP.

Automate the daily delivery of Insight Deliverability reports for your warm-up campaigns, especially the Feedback Loop reports to check on true spam complaint rates.

Ensure that your warm-up audience lists consist of recently opted-in, opened/clicked within the last few months, or are known brand advocates.