There are many effective tools available to increase customer engagement these days. Often, when working on mailing lists, inexperienced marketers lose sight of an important detail: the number of addresses in the database is not equal to the number of clients who will receive and read the letter, since any databases become outdated over time and turn from relevant to malicious. Don't miss the important step of checking your email is up to date using
Mailtester. It will greatly improve efficiency