Track REPS hours from your Fastmail inbox

RE:Writeoff connects to Fastmail (read-only) and turns property-related emails into IRS-grade activity logs — automatically.

What we capture from your Fastmail

  • Maintenance threads with tenants and contractors
  • Vendor invoices and receipts
  • Insurance renewal notices and policy documents
  • Property-management updates and statements
  • Tax-relevant correspondence (HOA, utilities, escrow)

Address types: @fastmail.com, Fastmail-hosted custom domains.

Connecting Fastmail takes about 2 minutes

  1. 1

    Sign in at app.fastmail.com

    Open app.fastmail.com.

  2. 2

    Open Settings → Privacy & Security

    Find the App passwords section.

  3. 3

    Create a new app password

    Set access level to IMAP & POP only and label it RE:Writeoff.

  4. 4

    Paste it into RE:Writeoff

    Copy the password Fastmail generates and paste into the App password field.

Need more detail? See the Fastmail app-password docs.

What RE:Writeoff doesn't do

  • · Read-only access — we never send, modify, or delete anything in your Fastmail
  • · Irrelevant emails are dropped immediately; we only keep what's tied to a deductible activity
  • · Mailbox credentials are encrypted at rest with envelope encryption
  • · You can revoke access from Fastmail or from inside RE:Writeoff at any time

Fastmail FAQ

Does this work with my custom domain on Fastmail?

Yes. Any Fastmail-hosted domain works with the Fastmail preset.

What scope should the app password have?

IMAP & POP only. RE:Writeoff doesn't send mail or modify your account, so giving narrow scope is safer.

Will the app password show in my Fastmail security log?

Yes — Fastmail logs every IMAP login. RE:Writeoff polls on a schedule, so expect roughly one entry per scan.

Start tracking your Fastmail hours

30 days free. No credit card required.

Fastmail Hour Tracking for Real Estate Investors | RE:Writeoff