A local mail rule for solo businesses

One invoice in. Every reminder out.

Keep chasing late payments without making a mess in your accounting archive. Mailroom forwards the first invoice PDF and quietly stops every duplicate.

Download for your computer See the sorting rule

Detecting your platform…

A porcelain mail sorter lets one invoice pass into an archive while three reminder envelopes remain separate — 3 reminders1 canonical record

Never touches your invoice workflow. Keep sending from the tool you already use.

Never uploads your mailbox. IMAP and SMTP connect directly from your computer.

Never hides a decision. Every archive and skipped duplicate gets a local receipt.

The quiet sorting line

A narrow rule between sending and accounting

Mailroom is not an invoice maker or a new bookkeeping system. It handles the one routing decision other tools blur.

01
Name the mail you expect
Set a subject term, optional sender, and mailbox. Nothing else is inspected.
02
Preview the shelf
See which PDF would become canonical before Mailroom forwards anything.
03
Archive once
The first PDF hash and invoice thread are recorded locally. Reminders remain untouched and duplicates stay out.

Built for the side effect

Your reminder can still sound human. Your archive stays exact.

Invoice senders are optimized to deliver mail. Accounting inboxes are optimized to ingest it. Mailroom sits locally between those assumptions.

Mar 2Invoice #1042Archived once

Mar 23Reminder: Invoice #1042Duplicate stopped

Apr 2Final reminder: #1042Duplicate stopped

A mailroom, not a mail cloud

Your messages take the short route

Mail travels directly between your configured IMAP and SMTP servers. Passwords live in the operating system keychain; rules, hashes, and audit history live on your device. There is no account, mailbox upload, telemetry, or behavioral analytics.

Read the plain-language privacy policy →

Install the desktop companion