Agents / Marketing & AI visibility / Claude skill packs
Drop broken, duplicate, role and throwaway addresses before you pay a verifier per address. Runs in your browser; nothing is uploaded. Does not check mailboxes.
Free Use it here · Ready in about 1 minFormat: Claude skill#Marketing & AI visibility#Claude skill packs
Free
FreeReadyUpgrade to Pro: Email List Cleaner Pro with MX check · $19
Free direct download from this site: no sign-up, no email. Version 1.0.0. SHA-256 15f1d285065beafab62b179e432e44a78215d5459283bc37656e232e8ff12b3e
Drop your file and get the result in seconds. It runs in your browser, so your files never leave your device. Free: the full free clean on your whole list (syntax, duplicates, role and disposable addresses).
How Email List Cleaner moves through a job, step by step. The run below is an example output, written from what this agent does. It isn't a live run on your data.
Sample input
One CSV export (any delimiter) or a one-address-per-line file
Example output Illustration
You get: - clean.csv with your original columns - removed.csv with status, reason and suggested fix - all-with-status.csv - report.md
Third-party costs are paid to those providers, not to us.
42/42 automated checks pass on Python 3.13.5 (standard library only); 20 cases incl. invalid input, duplicates and upstream failures. Not tested: lists over 200,000 rows (works, but slower); every CSV dialect of every email tool; internationalised addresses beyond IDNA domains.
Demos use fictional businesses and data.
Pro Upgrade to Pro
Fix domain typos, apply your unsubscribes, merge Gmail duplicates and drop domains with no mail server before you verify or send. Does not probe mailboxes. $19 (coming soon).
This is an AI agent: it uses an AI model to read, sort, score or draft. It runs in your own accounts. Anything it would send outside your business waits for your approval unless you choose otherwise, and it never needs your passwords. Our AI disclosure.
Setup steps, fixes and version history. The help box answers from these docs; it is not a person.
5 tested Claude skills check whether search and AI crawlers can reach and read your site: crawl, bot access, schema, llms.txt. Not a rank tracker.
5 Claude skills
Download + 3-step setup · Ready in about 6 min
$29
Get itTwo small Claude skills, free: clean a messy CSV, and check which AI crawlers can reach your site.
2 Claude skills
Download + setup guide
Free
Get itCheck your Etsy listings against Etsy's own title and tag guidance: 140 characters, 13 tags, allowed characters, photos. Free, no login.
Claude skill
Use it here · Ready in about 1 min
Free
Get itDrop broken, duplicate, role and throwaway addresses before you pay a verifier per address. Runs in your browser; nothing is uploaded. Does not check mailboxes. clean.csv with your original columns. removed.csv with status, reason and suggested fix. all-with-status.csv. report.md.
You need: Claude.ai with code execution, or Claude Code; Python 3.10+ (standard library only); Any CSV export from your email tool, CRM or form. Third-party costs are paid to those providers, not to us.
42/42 automated checks pass on Python 3.13.5 (standard library only); 20 cases incl. invalid input, duplicates and upstream failures. Not tested: lists over 200,000 rows (works, but slower); every CSV dialect of every email tool; internationalised addresses beyond IDNA domains.
It's free: press "Download free" to get the zip straight from this site, with no sign-up. The SHA-256 checksum on this page lets you check the file.
No. It never contacts mail servers. Pro adds a DNS check that the domain can receive mail.
CSV with commas, semicolons, tabs or pipes, or a text file with one address per line.
Automatic typo fixing, your suppression and block/allow lists, Gmail dot and +tag duplicates, a DNS mail-server check and merging several lists.
No. It never contacts mail servers, so it cannot tell whether a mailbox exists. Use it first: every address it removes is one you do not pay a verifier to check. Then verify what is left if you need mailbox-level checks.
No. On this site it runs in your browser and the file never leaves your device. The Claude skill runs on your own files.
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