Campaign & Business

Address list formatter and CSV cleanup

Clean CSV files, dedupe addresses, and fix USPS formatting before you mail. Use it free online — or upload files for free Human + AI review by our prepress team.

csv cleanupdedupe addressesproper casingusps formattinginternational addressbulk mailing listcomma and quote fixzip code validationmailing indicia areaprepress checklist

Paste addresses (CSV or tab-separated)

Free Human + AI option

Not ready to trust the tool alone?

This Addresses utility is 100% free in your browser. If you want our prepress team to run the same job manually — with AI assistance — upload your files and we will review and email you back at no charge.

Upload PDFs, images, spreadsheets, or screenshots of your results
Ask for Human + AI help with this exact task in the notes
Get a manual check plus AI-assisted fixes before you print

Request Human + AI help with this task Free Human + AI design services

How to use this tool

Upload your CSV Drop in a bulk mailing list; no template needed.
Apply formatting Run proper casing, comma and quote fix, and zip code validation.
Export mail ready Download USPS formatting with a mailing indicia area note for print.
Optional: request free Human + AI help Prefer a real prepress review? Upload your files and note “Addresses” — our team will run the same task manually with AI assistance and email you back at no charge.

Every step above can also be handled by our team — use the Human + AI upload button if you prefer personal assistance.

Clean data before you print

The address list formatter performs CSV cleanup to dedupe addresses, apply proper casing, and fix commas and quotes that break uploads.

It aligns with USPS formatting rules and zip code validation so barcodes scan smoothly.

Handle any destination

Switch between domestic and international address formats while keeping your bulk mailing list organized.

Pair with the EDDM size checker or direct mail ROI calculator to finish planning.

Ready for production

Export a file that notes the mailing indicia area for artwork, attach it to your prepress checklist, and send art via the file uploader.

Free online — or free Human + AI assistance

This page runs entirely in your browser at no cost. If you prefer a second set of eyes, email or upload your files through our complimentary file uploader and ask for Human + AI help with Addresses. Our team will perform the same task manually, use AI where it helps, and send proof-ready feedback — also free.

Need broader design support? See our free Human + AI design services.

Frequently asked questions

Can it fix mixed casing?

Yes, proper casing is applied across names, streets, cities, and states.

Does it remove duplicates?

Use dedupe addresses to flag exact matches and near-matches.

What about international address formats?

Toggle to international mode for country-specific order and postal codes.

Do I still need indicia placement?

Yes, keep a mailing indicia area clear on the artwork even after data cleanup.

Can your team do this for me instead of using the online tool?

Yes. The browser tool is free and private, but if you would rather not rely on it alone, upload your files via our complimentary file uploader and request Human + AI help with “Addresses”. Our prepress team will review manually — with AI assistance — and reply for free.

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