We have a good number of invalid emails in our database. We recently found a group that were incorrectly marked as invalid.
It was a special case, the company changed all of their emails, so our messages to their old email addresses bounced and they eventually went invalid. We updated their emails eventually but didn't notice they were listed as invalid, so we missed out on a bunch of emails to them.
I'd love to know if there is an automated way that we can verify or test emails are in fact invalid. I worry that we have invalid emails in our database, that are actually good emails. Thanks much!
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