You've probably received an unwanted email in the past, and you may have wondered how the sender of the message got your email address. There are many possibilities, but the most common is that some companies sell your data to intermediaries so they can fill your email box with a bunch of marketing or spam messages.
If you want to see if your email has been sold to third parties, do a simple search for it via a site called "Have I Been Sold". A site inspired by the I Have Been Pwned portal, this site works similarly: Type or paste an email address into the search engine and click on the blue button that says: Was it sold? To see if the e-mail is present in any of the service databases.
If the e-mail entered in the database did not appear, was it sold? , You can make the service notify you if future email appears in a list. Otherwise, you can inform the company that sold the data. Interesting details you might care about are that the site lists some steps to prevent your email addresses from being sold: Use custom email domains; create an alternate and unique email for any new service you sign up with, etc.
