List management
When to Delete a Contact Instead of Winning It Back
Hard bounces, spam complaints, missing consent: when to delete an address instead of a reactivation campaign, and how list hygiene affects deliverability.
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List management
CSV Import With Field Mapping Without Wrecking Your List
A CSV import with field mapping looks like a technical, boring chore. Right up to the moment it breaks the list the whole company’s communication rests on. A...
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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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Deliverability best practices
Twelve reasons your emails land in spam
A spam filter does not judge your content, it judges the sender Emails land in spam mostly for technical reasons. Not because the subject line says “sale”. Not...
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Email deliverability
Hard bounce, soft bounce, reputation block - three different problems
The sending report shows one number: bounces. Except that number covers three completely different things. A hard bounce is an address problem. A soft bounce is a moment-in-time...
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Email segmentation & personalization
Segmenting a List Without Building Twenty Segments Nobody Uses
Why Most Segmentation Plans Die in the Panel Same pattern, over and over, across our sending fleet. An account signs up, builds eleven segments in an afternoon, names...
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