The law says mail it. Your file needs proof it went.

Create a free account, then add your firm’s return address and a payment method. Start a mailing and upload your PDF. Add recipients one at a time, from a saved group, or by pasting a list from Excel or Google Sheets, and choose Certified Mail for each recipient who needs it. The mailing screen itemizes every charge line by line. Submit before the 12:00 p.m. Pacific cutoff on a business day and we print it, stuff it, and hand it to USPS that same day.

It depends on the service you choose for each recipient. Certified Mail, Certified Mail with electronic return receipt, and Priority Mail with signature each come with a Certificate of Acceptance showing USPS accepted the piece, which you download per recipient from the mailing page. Any mailing can add a Proof of Service, printed as the first page of every envelope, and you can view its signed copy from the mailing page after you submit. Signature services add an electronic return receipt once USPS collects the signature, and Certified and Priority Mail carry a USPS tracking number. Plain First-Class Mail has no Certificate of Acceptance and no tracking number.

MatterSnail is a mailing platform, not a law firm, and nothing in it is legal advice. It gives you the records described here, and you decide whether a mailing and its records meet the statute, court rule, or deadline you are working under.

No. MatterSnail does not use paper green cards. When you need a signature, choose Certified Mail with electronic return receipt, or Priority Mail with signature: USPS collects the recipient’s signature, and the return receipt appears on the mailing page once USPS posts it. Plain Certified Mail has no return receipt. If USPS fails to collect a signature on a certified return-receipt mailing, MatterSnail credits the certified postage for that piece to your account.

No. Certified Mail and Priority Mail recipients each get a USPS tracking number that links to usps.com. Plain First-Class Mail has no tracking number, so it usually ends at Likely Delivered, inferred from USPS scan data, rather than a confirmed delivery. Every recipient, on every service, gets its own delivery status on the mailing page, updated automatically several times a day from USPS scan data reported by our mail partner.

Submit before the 12:00 p.m. Pacific cutoff on a business day, and your mail is printed, stuffed, and handed to USPS that same day. Mailings submitted after the cutoff, on weekends, or on USPS federal holidays go out the next business day, and the app shows the exact upcoming cutoff in your own time zone. From there, First-Class and Certified Mail typically arrive in 3–5 business days, and Priority Mail in 2–3. Those are USPS estimates, not guarantees, so build in margin before a deadline.

Cancel it from the mailing page until 30 minutes after its processing cutoff, which is 12:30 p.m. Pacific on the day it is processed; the exact deadline is shown on the mailing. A canceled mailing is not billed, and you can reopen it as a draft, fix it, and submit it again. After the deadline, the mail cannot be recalled.

Yes. Paste a list straight from Excel or Google Sheets, or upload a CSV, and preview every line before anything is added, up to 1,000 recipients in one action. If any line is unmailable, nothing is added until you fix it. A mailing carries up to 100 recipients, so a longer list is split into mailings of 100 for you. Each one is a copy with the same documents, return address, and settings, is submitted on its own, and has a Proof of Service listing only its own recipients. Every recipient receives the same documents in an individually addressed envelope.

The Free plan has no monthly fee. Premium has a plan fee and the lowest service charge per recipient. On either plan, a mailing costs a service charge per recipient, plus the USPS service you choose, postage by weight, printing past the first few sheets, and any add-ons such as an electronic return receipt or a return envelope. Every line is itemized before you submit, and a submission is stopped if a price changed while you were reviewing it. A payment method on file is required to send mail on every plan, including Free.

No. Addresses are printed exactly as you enter them, and MatterSnail does not check them against USPS records, so review each one before you submit. You can mail to addresses in all 50 states and Washington, D.C., state names and ZIP+4 codes are cleaned up as you paste, and your team’s past recipients are suggested as you type. If USPS returns a piece as undeliverable, that recipient is marked Returned on the mailing.

Uploaded documents are permanently deleted from our storage 14 days after upload, so keep your originals: MatterSnail is not a document archive. Mailing records, meaning recipients, services, tracking history, and receipts, stay available for as long as your team exists. Certificates of Acceptance, return receipts, the signed Proof of Service, and the parcel as it was printed and mailed are held by our print-and-mail partner and fetched each time you open them.

Yes. The Free plan includes up to 3 users, and Premium includes unlimited users at no per-user charge. Everyone on the team can prepare and send mail, owners and admins manage invitations and billing, and every submitted mailing records who submitted it. MatterSnail also keeps an audit log of key actions on every plan, such as mailings submitted, canceled, or deleted, invitations, and role changes. On Premium, owners and admins can search it and export it to CSV, including entries recorded before the upgrade.

Yes, on every plan. With Clio connected, you can address a recipient from any Clio contact and import PDFs from a Clio matter into the mailing. If you choose, once a mailing can no longer be canceled, MatterSnail posts its total cost to the matter as an expense, with a note that it was mailed. With Smokeball connected, you can import one contact or everyone on a matter, add PDFs from the matter’s files, and post the total cost back as an expense with a memo.

Yes. Connect Claude, ChatGPT, or another AI assistant to check delivery statuses, look up what a mailing costs, and prepare a draft with recipients, a saved group, and a return address. The connection is draft-only: your assistant can never upload documents, submit a mailing, or spend money. You attach the documents, review, and press Submit yourself, in MatterSnail.