Blog
Deliverability notes
Short, practical articles about getting email into the inbox and keeping it there.
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Why emails go to spam: eight causes you can check today
From missing authentication to tired lists and suspicious links, the most common reasons legitimate email ends up in the spam folder, and how to spot each one in a seed test.
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SPF, DKIM and DMARC explained: the authentication trio behind inbox placement
What each record does, how providers read the Authentication-Results header, why alignment matters more than a bare pass, and the mistakes that quietly break it.
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How to test email deliverability step by step with seed mailboxes
A practical walkthrough of a seed-list deliverability test: what to send, how to read Inbox, Promotions and Spam results, and what to fix first.
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What is email deliverability, and why inbox placement is the number that matters
Delivered is not the same as seen. Learn the difference between delivery rate and inbox placement, and why a silent spam folder costs more than a bounce.