We all get spam email and it wastes a lot of time for me and probably you as well.  One rule I have for myself is not to open the messages on my smartphone.  I use a Linux computer so it doesn’t mess up my main communication tool if the message has a payload or it re-directs me to a dangerous web site.   You might consider having one computer in your business for opening suspicious emails and web links just for this reason – you don’t want to infect your main computer or a smartphone.