Privacy policy
Last updated: 11 November 2026
Who uses MailSQL
MailSQL is a personal tool. It is run by its author on their own computer and is used only with the author's own Google account. It is not offered to other people.
What data it accesses
With the Gmail permission https://www.googleapis.com/auth/gmail.modify,
MailSQL reads the messages and labels in the operator's mailbox, and can change labels
or move messages to the trash when the operator asks it to. It does not send email and
never deletes messages permanently.
Where the data goes
- Message data is stored only in a PostgreSQL database on the operator's own computer.
- It is analysed there, by software and a classification model running on that same computer.
- It is not sent to the author, to any third party, or to any external service. This includes AI and analytics services.
- It is not sold or shared, and it is not used for advertising.
- The OAuth credentials are kept in a file on that computer that only the database service can read.
Google API Services User Data Policy
MailSQL's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Keeping and deleting data
The local copy is kept until the operator deletes it. Access can be withdrawn at any time at myaccount.google.com/permissions. After that, MailSQL can no longer read the mailbox.