If I were you, I would do a full scan of the computer and network to make sure there's no infection, including keylogger.  I would then log onto e-services (without using any link in the email) to check if it's really been suspended and, if not, change the password immediately just in case.  With 2FA activated, it's not that easy to break into your account.

After all is done, forward the email to the IRS at [email address removed] and delete the copy in your email client/server, etc.