Guides
Practical guides on email verification and deliverability.
Developer-focused writing on how verification works, how to keep bounce rates low, and how to handle the edge cases that break lists.
April 202612 min read
What is Email Verification? A Complete Guide for Developers
How email verification works, what each check does, when to verify, and how to integrate it into your stack.
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April 20268 min read
Catch-All Emails: What They Are and How to Handle Them
Why verifiers return "risky" for catch-all domains, how common they are, and a practical handling strategy.
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April 20269 min read
What's an Acceptable Email Bounce Rate? (And How to Stay Under It)
Hard vs soft bounces, the thresholds that matter, and how to keep list decay from wrecking your deliverability.
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April 20269 min read
Detecting Disposable and Temporary Emails at Signup
Why burner domains poison signup funnels, detection approaches that work, and a signup-gate implementation.
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