6 wichtige Fragen der Zustellbarkeit von Emails betreffend!

Q: There are numerous small blacklists out there. Should we be tracking all of these? What is the impact of these various lists?

A: There are hundreds of blacklists being operated by numerous anti-spam activists and organizations. Blacklisting essentially means your IP has been flagged for sending unwanted traffic and the followers of that blacklist (i.e. ISPs) may decide to block your emails. We can narrow down the significance of a blacklist based on its ISP footprint. For example, Spamhaus is an organization that has a vast majority of ISPs subscribing to their blocklist. Upwards of 80% of a B2C marketer's list could be blocked as a result of being blocklisted by Spamhaus. On the other hand, a very small blacklist may only cover a few private domains with only a handful of subscribers from your list. This blocking impact of this would be much less noticeable, though the root of the issue should still be corrected and mediated if at all possible...