The General Data Protection Regulation (GDPR) came into force on 25th may 2018. I hacked this tool together in a few hours. The main idea: make users send email with their email programm. The user had to enter their name and then choose a company. By clicking on a button, a pre-filled email had been generated in an email programm, i.e., Thunderbird.
The idea was perfectionated by the initiative DatenAnfragen.de. Because there was no need for my tool anymore, I shut it down.