Sender permanence

Sending permanence is the process of establishing a consistent sending volume and strategy in order to maintain ISP reputation. Here are some reasons why sender permanence is important:

  • Spammers will typically “IP address hop,” meaning that they’ll constantly shift traffic across many IP addresses to avoid reputation issues.
  • Consistency is key to prove to ISPs that the sender is reputable and not attempting to by-pass any reputation issues that are a result of poor sending practices.
  • Maintaining these consistent strategies over a long period of time is required before some ISPs will even consider the sender reputable at all.

Here are some examples:

Good sending permanence

Bad sending permanence

Acceptable sending permanence

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