What this is
A guide to checking your email list for invalid, risky, or low-quality addresses before sending.
Why it matters
Sending to bad email addresses leads to:
High bounce rates
Spam complaints
Damaged domain reputation
Even a small percentage of invalid emails can hurt deliverability.
What to do
Export your email list from your sending platform
Upload your list to an email verification tool (e.g. NeverBounce or DeBounce)
Run the verification process
Remove:
Invalid emails
Risky emails
Disposable or temporary addresses
Import the cleaned list back into your sending platform
What to remove
Invalid emails (will bounce)
Catch-all domains (higher risk)
Role-based emails (e.g. info@, support@)
Temporary or disposable emails
Best practices
Verify your list before every campaign
Avoid sending to old or unengaged contacts
Never send to purchased or scraped lists