Free tool
Email Syntax Checker
Check whether an email address is syntactically valid and spot common typos like gmial.com — instantly, with no network call.
How it works
- 1Type or paste an email address.
- 2We validate the format and flag likely typos.
- 3Fix it before it ever enters your list.
Questions
Frequently asked
What counts as invalid syntax?
Missing @, illegal characters, no domain, a domain with no dot, or a common provider typo (gmial.com, hotmial.com).
Does syntax-valid mean deliverable?
No — valid syntax only means the address is well-formed. Deliverability also depends on the domain and mailbox, which full verification checks.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
100 free creditsNo credit cardCancel anytime