Your sender reputation is more important than the campaign you are running.
If your sender reputation is adversely affected by various blacklists most probably only a few of your emails will actually reach the inbox. This might also have a domino effect on the company ROI when the bounces come back like a tsunami.
Alongside with your domain reputation is your IP reputation. If you send your email campaigns using a dedicated IP which is reserved only for your business strategy you have to make sure this IP is clean and has no blacklisting history. RepHero can make a pre-flight check on your IPs using in-depth historic records and prevent resources spending on a reputation already damaged.
Your sending domain after the @ is what the receivers rely on as a verified domain that has a history with no spam problems. A newly registered domain will always be scrutinized by eg. Gmail for history and only later it will be accepted as a live domain. Compared to IP lookups, domains are only checked on around ¼ of the lists. In the future, with IPV6 coming up, domain reputation will be of much greater importance than IP reputation, a process RepHero is up to speed with.
The most important factors:
Jon Postel, the inventor of the SMTP protocol, is known also for these rules:
“An implementation should be conservative in its sending behaviour and liberal in its receiving behaviour” and “Be liberal in what you accept and conservative in what you send”.