Outreach Lead Checker

The checker is free to use — you just need an account.

What it does

· Merges several lead CSVs into one and removes duplicate addresses.
· Splits a long list into batches small enough for a verification service.
· Matches your list against your Gmail sent mail, so you stop writing to people twice.
· Exports the unsent leads, a full status report and a summary, or all three as a ZIP.
· Runs entirely in your browser. Your list is never uploaded.