Check the email address and see if it isn't some carrier. I don't have them all, but this is a partial list of email-to-sms gateways:
Alltel [insert 10-digit number]@message.alltel.com [insert 10-digit number]@mms.alltelwireless.com
AT&T [insert 10-digit number]@txt.att.net [insert 10-digit number]@mms.att.net
Boost Mobile [insert 10-digit number]@myboostmobile.com [insert 10-digit number]@myboostmobile.com
Cricket Wireless [insert 10-digit number]@mms.cricketwireless.net
Project Fi [insert 10-digit number]@msg.fi.google.com
Sprint [insert 10-digit number]@messaging.sprintpcs.com [insert 10-digit number]@pm.sprint.com
T-Mobile [insert 10-digit number]@tmomail.net [insert 10-digit number]@tmomail.net
U.S. Cellular [insert 10-digit number]@email.uscc.net [insert 10-digit number]@mms.uscc.net
Verizon [insert 10-digit number]@vtext.com [insert 10-digit number]@vzwpix.com
Virgin Mobile [insert 10-digit number]@vmobl.com [insert 10-digit number]@vmpix.com
Republic Wireless [insert 10-digital number]@text.republicwireless.com
If it's from a carrier, someone sent you an email, through a gateway, so you'd get it as a text. You should be able to block it by blocking the 10 digit number at the beginning with any phone/text blocking app.
08-09-2017 12:02 PM