Email data can be dirty and it occurs more than you may might think. Dirty data are basically data that are invalid. Even the littlest slip-up during data entry can prompt an invalid email address — a simple typographical error, a displaced @ sign, an unnoticed character — it doesn’t take much. Correspondingly, research reveals that these blunders happen in more than 20% of email registrations.
When you start a campaign without having these invalid email addresses ran through by a data cleansing provider, you will be on ISP’s and spam filter’s radar. ISPs and spam filters do not just make the decision on how much funny business can occur amid an email campaign (spam reports, unsubscribes, and undelivered/bounced messages), but they also get to choose which campaigns hits the inbox.
Various factors are considered in making this resolve, one being the data quality. In case you have your data handled by a data cleansing provider or a software, your email list will have less errors. Notwithstanding content quality and engagement, and the IP rep, will give you a better shot of hitting the inbox. It lessens the probability of an ISP blocking you (or even your own ESP restricting you).
So when would it be a good idea to utilize a data cleansing service? Always. It is a year-round concern, and you ought to do it consistently before each campaign to ensure deliverability. Moreover, it’s particularly critical in case you’re sending to an older list, working together on another one, or wanting to grow your database by buying a professionally screened email list.
Can’t an ESP or marketing automation software clean an email list? No. Truth be told, most ESPs won’t let you send to a bought list since they aren’t fit for cleaning the data. To utilize a purchased list, and to guarantee the cleanliness of your own organic list, its deliverability and CAN-SPAM/CASL compliant, employ a data cleansing service.