Mercaprecios aims to automate historic price analysis by leveraging Mercadona's e-ticket functionality, where tickets for your purchase are not printed, but sent to your preferred email address.
Every email sent to Mercaprecio's inbox (TBD) will be parsed, and pricing information will be extracted from the attached Mercadona tickets, which is later stored in a database for further analysis.
The easiest way to contribute is by setting up automatic forwarding of your tickets to Mercaprecio's inbox (TBD).
Feel free to check out the roadmap and contribute with PRs.
Only pricing information from the emails is parsed and stored. The rest of the email contents are completely ignored. You can verify this yourself by checking what the code is doing.