[buildsjets]

I've used spamgourmet.com for many years (Literally decades, my first entry was 2003-08-07) to create disposable email address. You just make up the address "[e-mail]" to create an email address for tempsite that expires after 4 uses. You can always remove this limit later.

My message stats: You have 245 spamgourmet address(es). 827 emails forwarded, 28,605 eaten.

The #1 worst offender for selling my address was Yahoo, followed by the German magazine Der Spiegel, then Groupon. But my stats go back 20 years, so this may not represent current sharing activity. I also have many many examples of registering at all kinds of sketchy websites that have never used that temp address beyond the initial registration confirmation..

Sorting by created date, in the most recent 5 years, my temp addresses seem to be getting shared and re-used considerably less frequently, which probably correlates to the overall death of email, which is for old people, so I am told.

[TZubiri]

what do you mean yahoo. As in you made a yahoo account with your domain?

Because yahoo also hosted @yahoo addresses, it would have been pretty noticeable if they sold the addresses of their own users.

"EDIT:which probably correlates to the overall death of email, which is for old people, so I am told."

Still alive and kicking as the de facto passport of the internet.