How do I organize my Fastmail email receipts?

Fastmail is one of the better mail providers for receipt-heavy users because both IMAP and filtering are solid. That means you have two genuinely good ways to organise receipts, not one compromised option.

Option 1: connect Fastmail directly for the least admin

If you want old and new receipts in one place with minimal upkeep, create a Fastmail app password and connect the mailbox directly. During setup, choose the folders that really contain receipts. Many people only need INBOX. Others benefit from scanning both INBOX and a dedicated Receipts or Orders folder.

Option 2: let Fastmail filters do the first pass

Fastmail rules are strong enough that you can be selective before anything reaches your receipt system. That is useful if your mailbox gets a lot of promotional mail with "invoice-like" wording. Forward only the retailer and subscription emails you trust, and keep the rest in Fastmail.

What Fastmail users usually underestimate

Saved searches and folders solve retrieval better than most providers do, but they still do not solve structure. They do not tell you which receipts are deductible, which ones need notes, which purchases belong to a client project, or how much you spent by category. That is where mailbox organisation stops and receipt management begins.

A workflow that fits Fastmail well

• Keep Fastmail as the archive of the original message.
• Use IMAP scanning or forwarding to pull only the useful receipt traffic into your record system.
• Use categories or tags once receipts land so tax-time questions are fast later.
• Keep manual uploads for paper receipts so everything ends up in the same place.

The practical answer

Choose IMAP if you want broad coverage and older receipts imported automatically. Choose forwarding if you want a narrower, quieter feed. Fastmail supports both styles well, so the real decision is how much noise you want to pre-filter before receipts hit your organised archive.

For the exact product flow, see Organise Fastmail email receipts and Email forwarding setup.