new email scam ?

Have gotten emails in my spam folder from what looks like real message from both UPS and FEDX. Opened first UPS one and thought is a scam so did not click link. Then saw next one was from FEDX so erased both of them. Today just got 2nd one from UPS. I have nothing comming from them. My memory usage went up from 33.50 to 34.51 on my phone, did opening that first one dump something on my phone? I do most all my email on my Casio Brigade via Verizon.
Dusty