Or...everything old is new again? Or something? Anyway, seedlist-based inbox testing has been around for a while. Pivotal Veracity was offering it up a good twenty years ago. Its heyday, an ex-P…
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I've spent a lot of time lately explaining what exactly seedlist testing is , how it works, and why it's valuable. I like it. I have a bias, after all, in that my day job…
