Email Format Checker
Paste a list of email addresses (one per line) to instantly flag invalid formats and common typos before you upload them to your CRM.
“Bad data quietly costs sales teams money. A single mistyped email address in a prospect list means a bounced campaign, a wasted outreach slot, or a lead that never gets contacted. Our free Email Format Checker catches the most common problems before they cause damage.
How it works: paste one or more email addresses, one per line, and the tool instantly flags entries with invalid syntax and highlights likely typos in popular domains (gmial.com instead of gmail.com, yaho.com instead of yahoo.com, and similar mistakes that happen constantly during manual data entry or fast note-taking on a call).
Who this is for: SDRs and BDRs cleaning a prospect list before an outbound campaign, marketing teams validating a webinar signup export, or anyone maintaining a CRM who wants a quick sanity check before importing new contacts.
What it checks: this tool validates format and structure — correct placement of the @ symbol, a valid domain pattern, and no illegal characters. It flags likely typos against a list of commonly misspelled major email providers.
What it does not do: format checking confirms an email is well-formed, not that the mailbox actually exists or accepts mail. For full deliverability verification (mailbox exists, isn’t full, isn’t a spam trap), a dedicated email verification service is still recommended before a large sending campaign — this tool is the fast first pass that catches obvious mistakes for free.
Why it matters for lead quality: clean data is the foundation of every outbound motion. Running your list through a quick format check before it ever reaches your CRM or sending tool saves time downstream and protects your sender reputation from unnecessary bounces.
Try it above — no account required, and nothing you paste is stored or sent anywhere.”