Phishing Emails

I have used eMClient for many years, without any problems.
But over the past couple of weeks I have received a lot of Phishing emails sent to my email address, BTWORD, a partial eMail address or Undisclosed Recipients. All are from dubious senders or well known companies.
My applying a ‘Rule’ they nearly all go to Junk Mail. I then promptly delete them without opening any attachments.
How can I stop these? I use BT Internet, eMClient, with security from Malwarebytes Premium

I too am seeing an increase in SPAM. Not surprising as we are in the holiday season.