Guides, checklists and news on email verification, list hygiene and deliverability.
Spam traps are addresses used by mailbox providers and blocklists to catch careless senders. Learn the three types and how to avoid each.
Hard bounces are permanent, soft bounces are temporary. Learn how to read the codes and the exact action each one needs.
There is no single schedule, but there is a simple rule: clean before big sends, on every import and on a regular rhythm that matches how fast your list decays.
Bounce rate is one of the first numbers mailbox providers look at. See what is healthy, what drives it up and how to bring it down.
Three DNS records prove your emails are really yours. A plain explanation of each and a safe order to set them up.
The big mailbox providers now enforce authentication, easy unsubscribes and low spam rates for bulk senders. Use this checklist to see where you stand.
Seven rules that decide whether your emails reach the inbox: clean lists, authentication, steady volume, relevance, easy unsubscribes, monitoring and patience.
Greylisting delays mail from unknown senders to filter out spam. Learn how it works, its side effects and what it means for verification.
How to read the Mailbite result for each address and turn it into decisions about sending, segmenting and cleaning.
Accept-all and catch-all describe the same server behaviour from two angles. Learn what it means for your list and how to handle these addresses.
Successful campaigns start before the first email is written. See how verification supports each stage, from list building to reporting.
Open a CSV in Excel without broken characters or merged columns, and save it as a proper workbook.
Verify 100 email addresses free every month. Plans start at $19.90 a month for 25,000 verifications.
Try first, decide later! Get started with a free plan.