Privacy Policy
This policy covers two things run by Addsum: the websites addsum.top and news.addsum.top, and the Addsum Gmail connection, a Google OAuth app named "Addsum Gmail MCP". Questions go to addsumtech@gmail.com.
The websites addsum.top and news.addsum.top
- There are no accounts, forms or advertising on these sites.
- We use Google Analytics to count visits: which pages are opened, how visitors found us, and their approximate country and device type. Google Analytics sets cookies whose names start with
_gaand receives your IP address. We see only totals, never your IP address, and we do not combine this data with anything else. Google handles it as described in How Google uses information from sites that use its services. You can opt out with the Google Analytics opt-out add-on. - Your language and display choices are saved in your browser's local storage. They never leave your device.
- When you follow a link from one addsum.top site to another, a cookie named
xlangcarries your language choice. It expires after 60 seconds and is deleted as soon as the next page reads it. - Both sites are hosted on Vercel, which keeps standard server logs (IP address, browser, page requested, time) to run the service and protect it from abuse.
- Links to other sites, such as GitHub or X, are governed by those sites' own policies.
Addsum Gmail connection
This is an internal tool. It lets the Addsum team's own AI assistant, running on our own computer, read our own Gmail accounts and prepare draft replies when we ask it to. It is not offered to the public. Only the Google accounts that belong to the Addsum team are allowed to sign in.
What it can access
gmail.readonly: read email messages, threads, labels and settings.gmail.compose: create and edit drafts. Messages are sent only when the account owner chooses to send them.
How the data is used
- Only to answer the account owner's own requests, such as finding a message, summarizing a thread or drafting a reply.
- Never for advertising, never sold, and never used to build profiles of anyone.
- We do not use it to train AI models.
Where the data goes
- The assistant reads the requested messages directly from Google's Gmail API on our computer.
- To answer a request, the assistant sends the relevant email content to Anthropic, the provider of the Claude model it runs on. Anthropic handles it under its own privacy policy. We have turned off the setting that would let Anthropic use our chats and coding sessions to train its models.
- We do not share Gmail data with anyone else.
Storage and deletion
- We run no server that stores email. Sign-in tokens are kept in the assistant's credential store on our own computer.
- Email content the assistant reads can stay in its local session history on that computer until the session files are deleted.
- Access can be removed at any time at myaccount.google.com/permissions. To ask us to delete anything, email addsumtech@gmail.com.
Addsum's use and transfer of information received from Google APIs to any other app will adhere to the Google API Services User Data Policy, including the Limited Use requirements.
Changes
If this policy changes, we will update this page and the date at the top.