In email marketing, the concept of a blacklist is very relevant. The Dashamail email newsletter service offers a detailed look at everything related to blacklists, which include IP addresses or domain names seen in spamming.
Postal reputation
Based on the history of the mailings carried out, each sender develops its own postal reputation. This is an indicator that characterizes the quality of traffic and the sender itself. It depends on the reputation of IP addresses, sending domain, mailing frequency, unsubscription and spam complaints statistics, percentage of delivered letters, their subject matter, and much more.
Every time the mail provider's server receives a newsletter, it checks the sender's mail reputation, technical settings on the domain, content and decides on the delivery of letters. If everything is ok, the letter goes to the Inbox, if in doubt - to the SPAM folder, and if there are critical problems, it is blocked by SPAM filters altogether.
Each postal provider uses its own algorithm to determine the postal reputation, but they all necessarily turn to special lists, blacklists, in which unscrupulous senders noticed earlier in the SPAM mailing list fall. We will talk about them today.
Public and private mailing blacklists
There are many blacklists, but there are 2 main groups:
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