Gmail Checker FAQ

A Gmail checker is a tool that verifies whether a Gmail address is valid and active. Gmail RADAR queries Google's authentication system to determine each account's status without sending an email — the owner of the account is never notified that the address was checked.

Paste a list of Gmail addresses into the input box on the home page, or upload a TXT, CSV, XLS, or XLSX file. Click Check and Gmail RADAR processes them in parallel, returning the status of every account in seconds.

Yes. Anyone can check up to 50 Gmail accounts without registering. Logged-in users get higher daily limits, scan history, and API access.

Each Gmail account is reported as Good (active and reachable), Disabled (the account has been suspended or removed), or Unknown (Gmail's response was ambiguous and the address could not be classified confidently).

No. Gmail RADAR uses non-intrusive checks against Gmail's authentication endpoints. No message is sent to the account being verified, and the owner is never notified that someone ran a check on their address.

You can upload .txt, .csv, .xls, and .xlsx files. Results can be exported back to TXT or Excel.

Yes — Gmail RADAR provides a REST API for programmatic bulk Gmail verification. See the API documentation for endpoints, request examples, and authentication.

Gmail RADAR queries Gmail's authentication system in real time, so results reflect the current state of each account. Accuracy is high for definitive responses; ambiguous responses are reported as Unknown rather than guessed.

Gmail RADAR runs checks in parallel, so thousands of Gmail addresses are typically processed in a fraction of the time a sequential checker would take. Throughput depends on current network conditions and your account's daily limits.

Uploaded Gmail addresses are processed only to return the status of each account. We do not sell, share, or repurpose your lists. Logged-in users can view their own scan history; guest checks are not retained.