I recommend people use proper email aliasing, not plus addressing. Duckduckgo makes a free one that's can integrate into Bitwarden, if you have iCloud+ Apple's($0.99/month) hide my email is good. Addy.io and SimpleLogin are the best and allow PGP encryption to prevent another party having access to your emails, but they are paid for full features.

> Organizations like the IAB require that advertisers normalize email addresses so that they can be correlated and tracked, regardless of users' privacy wishes.

https://www.privacyguides.org/en/email-aliasing/#over-plus-a...