List management
Address verification without sending an email
Verifying an address without sending an email is not one call to one API. It is a sequence of tests: syntax, DNS, MX records, an SMTP dialog cut...
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Email deliverability
Reading a Bounce Report: Hard, Soft and the Ones That Lie
Every campaign leaves a bounce report behind, and most people read it wrong. They open it, glance at the percentage, close it. Done. Which is a shame, because...
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Email deliverability
Email Throttling: Why Large Sends Get Deferred
Email throttling means a receiving server accepts your mail more slowly than you send it. Simple as that. It temporarily refuses part of a campaign with a 4xx...
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Email compliance & security
How Do Mass Email Campaigns Actually Work Behind the Scenes?
Most marketers see the “Send” button and nothing else. Click, check open rates next morning, move on. I get it - the interface is designed to hide complexity....
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