Bulk Email List Checker
Paste or upload a list to find invalid, duplicate, disposable, role-based, typo-prone, and domain-risk addresses before importing subscriber records.
Start Here
Paste email addresses or upload one CSV/TXT file, then run the Bulk Email List Checker.
Review the Bulk List Checker Result
Review the status, warnings, and recommended actions shown in the result panel.
Ready When You Are
Run Bulk Email List Checker to see the Bulk List Checker result and next actions.
About Bulk Email List Checker
A bulk list check is for cleaning many addresses before they enter Mailrith or another email system. It is designed for pasted lists, CSV files, exports from another tool, and raw CRM text. The goal is to separate clean addresses from addresses that may bounce, repeat, use disposable inboxes, or need manual review. Start with Protect List Quality if you are cleaning an imported list for the first time.
The bulk email list checker is also a planning tool. A list with many duplicates, role inboxes, free mailbox domains, or typo-heavy addresses may still contain real people, but it needs a careful import plan. Use the clean export for usable addresses, keep the suppression export for risky rows, and send first to the safest subscribers. The Sending Volume and Warmup guide explains why a small, engaged first send is safer than blasting the whole list.
What Bulk Email List Checker Checks
- Automatic email extraction from pasted text and files
- Duplicate detection
- Format and domain checks
- Mail server checks grouped by domain
- Disposable, role-based, and free mailbox detection
- Typo suggestions and downloadable CSV reports
Questions
What file types can I upload?
Use CSV or TXT files. The bulk email list checker extracts email-like values from the file and lets you download the validation report as a CSV.
Does this send test emails?
No. The bulk email list checker does not send mail to the addresses. It checks format, duplicate rows, domain mail records, and common list-quality risks in the browser.