Privacy policy

How Deep Learning Systems handles your information on this website and in our Mailbox Juice app. Last updated 19 October 2026.

  • This website uses no cookies, no analytics and no tracking code.
  • If you phone or email us, we use your details only to answer you and to provide what you ask for.
  • Mailbox Juice runs on your own computer. We never receive your email or your Google sign-in.
  • We don’t sell or share your information, and we don’t use your email to train AI models.

Who we are

Mailbox Juice (previously called Multi-Gmail during testing) and this website are run by Oliver Hilton, trading as Deep Learning Systems, KwaZulu-Natal, South Africa. Contact: admin@deeplearningsystems.co.za or +27 72 657 8881.

Enquiries

When you phone or email us, we keep your name, contact details and what you tell us, so we can answer you and, if you become a customer, provide our services. We keep this only for as long as we need it for that.

The Mailbox Juice app and your Google data

When you link an email account and approve Google’s permission screen, Mailbox Juice is granted the Gmail permission gmail.modify. That lets it search and read your email threads, messages, drafts, labels and attachments; create, edit and send drafts, replies and forwards; and add or remove labels, mark mail read or unread, star, archive, and move mail to Trash or Spam. It also reads the account’s own address and its “Send mail as” addresses and signature, so mail goes out from the right address. It cannot permanently delete email or change your Gmail settings.

How it’s used. Only to do what you ask Claude to do with your email. Nothing runs in the background, and your data is not used for advertising, profiling or any other purpose.

Where it goes.

  • Mailbox Juice runs entirely on your computer. There is no Mailbox Juice server, and we never receive your email or your Google sign-in.
  • Stored on your computer: the addresses you link, the nicknames you give them, and Google’s sign-in tokens, in your user account’s app-data folder. No email content is stored by Mailbox Juice.
  • The email content you ask about is passed to the Claude Desktop app on the same computer, which sends it to Anthropic to produce Claude’s replies. Anthropic handles it under its own privacy policy and your Claude settings.
  • Attachments are saved to your computer only when you ask.
  • All connections to Google use encrypted HTTPS.

Sharing. Google account data is not sold, rented or shared with anyone else, is not used for advertising, and is not used by Mailbox Juice to develop, improve or train artificial-intelligence or machine-learning models. No person reads your email on Mailbox Juice’s behalf.

Mailbox Juice’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Removing access. Ask Claude to remove an account: Mailbox Juice deletes its stored sign-in and cancels the access at Google. You can also cancel access at any time at myaccount.google.com/permissions. Uninstalling Mailbox Juice and deleting its app-data folder removes everything it stored.

Mailbox Juice early access

Early-access sign-ups for Mailbox Juice are collected on mailboxjuice.com, and how we handle them is explained in the privacy policy there.

This website

This website uses no cookies, no analytics and no advertising or tracking code. Like every website, our web server keeps short-lived technical logs (such as internet address, page requested and time) to keep the service running and secure.

Your rights

Under the Protection of Personal Information Act (POPIA) you can ask what information we hold about you, have it corrected or deleted, and object to its use. Email admin@deeplearningsystems.co.za and we’ll respond within 30 days. You may also complain to the Information Regulator.

Security

This website is served only over encrypted HTTPS. We collect as little as possible and limit who can reach it. If you find a security problem, please email admin@deeplearningsystems.co.za.

Changes

If this policy changes, the new version will be published on this page with a new date. If we make a significant change, we’ll tell Mailbox Juice early-access members by email.