The Sends Verified blog
Send to people, not to bounces.
Practical guides on email verification, bounce rate, catch-alls, spam traps and keeping a list clean.
Email data
Email list decay: why lists go stale and what to do
Email list decay is why good addresses quietly stop working. Here is what causes it, a rough monthly rate, and how often to re-verify a list.
October 10, 2026
Verification
How email verification works (without sending a thing)
Learn how email verification works, from the MX lookup and SMTP handshake that never sends a message to catch-all tests and eight signals that sort a list.
October 10, 2026
Deliverability
How to reduce your email bounce rate
Learn how to reduce your email bounce rate: hard vs soft bounces, why they hurt sender reputation, and how verifying and re-verifying lists keeps it low.
October 10, 2026
Verification
What is a catch-all email address?
A catch-all email accepts mail for every address on its domain, so SMTP cannot confirm the mailbox. Learn how to detect catch-alls and when to send.
October 10, 2026
Deliverability
What Is a Spam Trap and How Do You Avoid One?
What is a spam trap? Learn how pristine, recycled, and typo traps work, why they wreck deliverability, and how verification flags the ones it safely can.
October 10, 2026