Blog
Guides on email verification, deliverability and sender reputation, from the team that builds BounceIntel.
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Bounces
How to reduce your email bounce rate without a 40-page playbook
Get your email bounce rate under 2% without a 40-page playbook: verify at capture, clean before you send, and suppress hard bounces for good.
Sender reputation
Why bounces burn more than a campaign
A bounce costs more than one failed email. How bounces damage sender reputation, push good mail into spam and put your sending account at risk.
Guide
Catch-all emails explained: what accept-all domains hide from verification
Why SMTP says yes to every address on a catch-all domain, how verifiers detect it, and when to keep or suppress these addresses in a B2B list.
Guide
How email verification works, stage by stage
What an email verifier actually checks, stage by stage: syntax, DNS and MX, the SMTP probe and scoring, and which API field each stage fills in.
Protect your sender reputation before the next send.
Verify a list, wire the API into your signup form, and keep bad addresses away from your campaigns.