I stopped using PartMiner years ago, when they closed down all free
access to datasheets.

Today I received an email from PartMiner which says, in essence, "our
core business model is unprofitable, so we are now professional
spamwhores. Your contact details are being sold to anyone we can find
who will pay us a nickel":

If you would like to receive business or career related offers
from PartMiner Information Systems, you do not have to respond
to this e-mail. You can easily unsubscribe each time you receive
an e-mail from us if you don't find the information worthwhile. To
unsubscribe now, please scroll to the bottom of this e-mail for
instructions.

This "vendor" should be boycotted.