On 06 Dec 2017, Ken Blake wrote in
alt.comp.os.windows-10:

On Wed, 06 Dec 2017 18:19:20 -0500, Nil
wrote:

In your experience, are they a legitimate, honest company? If so,
their emails should have an "unsubscribe" link attached to each
email. If you are convinced that the emails are really coming from
them and not from an imposter, use that link to unsubsribe from
their mailings.

Be very careful! An unsubscribe link does *not* guarantee that
they are a "legitimate, honest company." In fact, just the
opposite is sometimes true--the "unsubscribe link" does not
unsubscribe you, but just verifies to the spammer that the address
it sent the message to is an actual live address.

You should not use the unsubscribe link unless you already know
that it's a "legitimate, honest company."

You're right, of course... and you're repeating what I had just said.
It does bear repeating, I guess.