Prompt
my imported leads have tons of invalid addresses
Latest observation
Oct 5, 2026
OpenAI APIWeb search: off
If your imported leads have lots of invalid email addresses, the best fix is to clean the list before sending so you don’t hurt deliverability.
What to do
-
Run an email verification tool
- Check for typos, fake domains, disposable emails, and invalid syntax.
- Common examples: NeverBounce, ZeroBounce, Kickbox, BriteVerify.
-
Remove obvious bad addresses
- Missing
@ - Misspelled domains like
gmial.com - Random strings like
asdf123@... - Role accounts if you don’t want them:
info@,support@, etc.
- Missing
-
Check for duplicates
- Deduplicate by email address so you don’t email the same lead twice.
-
Segment risky contacts
- Put “unknown” or “risky” emails into a separate list.
- Don’t send your first campaign to the whole imported file.
-
Validate at the source
- If possible, fix your lead capture forms so invalid emails can’t be entered going forward.
- Add inline validation and double opt-in.
Why it matters
- High bounce rates can damage sender reputation.
- Too many bad addresses can cause inboxing issues or account throttling.
If you want, I can help you with one of these:
- a bulk cleaning workflow
- a CSV validation script
- or best practices for importing leads safely