Mailbag
Privacy Policy
Published by Benjamin Jacobs (SwellStack Co). Effective 2026-11-15.
The short version
Mailbag collects no data. Your contacts are read on your device and never leave it. There is no account, no server, no analytics, no ads and no tracking.
Contacts
If you tap "Use my contacts", iOS asks whether Mailbag may read your contacts. Mailbag reads five things: given name, family name, company name, postal addresses and each contact's internal identifier. It does not read phone numbers, email addresses, photos, birthdays or notes. It cannot change, add or delete a contact; the app contains no code that writes to Contacts.
You can say no. Mailbag still works with Apple's contact picker (which shares only the people you pick), with addresses you type, and with the sample people.
What is stored, and where
Your lists are files in Mailbag's own folder on your device. A list holds contact identifiers, any text you typed for a label, your return address and your settings. Saved printer fixes hold the printer's network address and the nudge you set. A count of your free sheet and free envelopes is kept in the device keychain so it survives a reinstall; it holds no name or address. These files are backed up with your device like any app's data, under your own Apple Account.
Network
Mailbag makes no network calls of its own. Printing goes through Apple's AirPrint to the printer you pick. Purchases go through Apple's App Store. Neither sends your addresses to us.
Purchases
Apple handles payment. We receive no card details and no personal details from Apple about your purchase.
Children
Mailbag is not aimed at children and collects nothing from anyone.
Changes
If this policy changes, the new version will be posted on this page with a new effective date.