Deliverability
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The Axe Effect: Can a Brand Use Spam to Its Advantage?
Not anymore. A stunt like the Axe Body Spray campaign described below would land a brand in trouble with mailbox filters and with the…
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Major Spam Distributor McColo Taken Offline by Its Internet Providers
On November 11, 2008, McColo Corp, a small hosting company in San Jose, lost its internet connection. Its upstream providers, Global Crossing and Hurricane…
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From Junk Folder to Inbox
In 2026, brand emails usually end up in junk because of how they are sent, not because of a word or a phone number…
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Yahoo Sets the Record Straight on Bounces and Bulk Folder Problems
As of November 2026, if Yahoo starts bouncing your mail or putting it in the spam folder, start with the error code in the…
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Correct Is Not Always the Most Effective in Email Marketing
Sending an email “correctly” (on time, clean code, no errors) does not make it effective. What makes it effective is relevance, a welcome message…