You can add the email address to your email form or set in cpanel to add as an email forwarder.
List of services by cell phone carrier
Types of service are Short Message Service (SMS) or Multimedia Messaging Service (MMS)
If your carrier supports MMS use that and it will allow longer messages and images.
Replace the pound sign with your 10 digit number
AT&T: #@txt.att.net (SMS), #@mms.att.net (MMS)
Boost Mobile: #@sms.myboostmobile.com (SMS), #@myboostmobile.com (MMS)
C-Spire: #@cspire1.com
Consumer Cellular: #@mailmymobile.net
Cricket: #@sms.cricketwireless.net (SMS), #@mms.cricketwireless.net (MMS)
Google Fi (Project Fi): #@msg.fi.google.com (SMS & MMS)
Metro PCS: #@mymetropcs.com (SMS & MMS)
Mint Mobile: #@mailmymobile.net (SMS)
Page Plus: #@vtext.com (SMS), #@mypixmessages.com (MMS)
Red Pocket: may use AT&T or T-Mobile (2G) & Verizon for (3G) - contact them to find out which to use.
Republic Wireless: #@text.republicwireless.com (SMS)
Simple Mobile: #@smtext.com (SMS)
Sprint: #@messaging.sprintpcs.com (SMS), #@pm.sprint.com (MMS)
T-Mobile: #@tmomail.net (SMS & MMS)
Ting: #@message.ting.com (SMS 3G), #@tmomail.net (SMS 2G)
Tracfone: #@mmst5.tracfone.com (MMS)
U.S. Cellular: #@email.uscc.net (SMS), #@mms.uscc.net (MMS)
Verizon: #@vtext.com (SMS), #@vzwpix.com (MMS)
Virgin Mobile: #@vmobl.com (SMS), #@vmpix.com (MMS)
Xfinity Mobile: #@vtext.com (SMS), #@mypixmessages.com (MMS)