Depending on which level of WP Marketing Engine you’ve chosen, you are limited to the number of leads you can manage and track: Inbound Pro – 2,500 leads, Engage Pro – 5,000 leads, and Conversion Pro – 15,000 leads. WP Marketing Engine counts only your REACHABLE leads in this number. Opt-outs and bad emails, while still managed, do not count toward your package’s lead limit.