Duckduckgo already made that email anonymizer already a year ago. Tons of websites do it too
#Firefox integrates Firefox Relay, its privacy feature that masks email addresses, directly into the browser, providing users with enhanced online #privacy and protection from unsolicited marketing communications.
Users can shield their personal email addresses and minimize data exposure by using Firefox Relay for surveys, social media sign-ups, form submissions, and registrations.
Mozilla plans to roll out the built-in Relay feature to millions of Firefox users in the next few weeks, aligning with its commitment to privacy-driven products. #news
https://www.androidpolice.com/firefox-relay-integration-widely-available/
Discussion
Relay was first released as a Firefox extension way back in 2020, well before the Duck copied them. The Duck plays catch-up when they could be on the bleading edge instead. 😵