(disclaimer: My opinions are solely my own and not that of my employer.) If you are a merchant, there are standards for sending package/order information in a

(disclaimer: My opinions are solely my own and not that of my employer.) If you are a merchant, there are standards for sending package/order information in a machine-readable way in email: https://developers.google.com/gmail/markup/overview https://developers.google.com/gmail/markup/overview The purpose is to provide personalized useful features like package tracking. When logged in, you can search for something like "my packages" or "where are my packages". This is a feature that users expect from other assistants (e.g. Amazon Alexa) and email clients (e.g. Outlook). https://support.google.com/websearch/answer/1710607 https://support.google.com/websearch/answer/1710607 The categories that are being extracted for personalized search should be fairly limited (primarily hotels, flights, online purchases). If you don't feel safe or secure using Google products, you should strongly consider switching away. I personally would suggest Outlook.com, but you could also self-host or use an indie hosting provider like FastMail. (Most product folks make trade-offs for the average person. There are some great security tech coming out of Google (Security Keys, Chromebooks/Chrome OS) but a lot of the security assumes at least moderate trust in Google.)