Paste up to 100 email addresses. The list checker reviews format, domain signals, duplicates, and known disposable domains before you use the list again.
Copy addresses from a spreadsheet, CRM export, or text file into the input field.
Each unique address is checked for syntax, domain reachability, DNS signals, and known disposable providers.
Remove or correct invalid addresses and review disposable addresses and duplicates separately.
This check is a fast quality filter for lists. It does not replace link confirmation and cannot prove mailbox ownership or guaranteed delivery.
You can paste up to 100 addresses and 20,000 characters per run. For larger lists, split the data into several checks.
The list is processed for the current request and shown as results. It is not published as a public list. For sensitive data, only submit the addresses needed for the check.
No. Syntax and DNS provide technical signals. They do not prove that a specific mailbox exists, is monitored, or will accept a message into its inbox.