Online Texting
Verizon Wireless
https://text.vzw.com/customer_site/jsp/messaging_lo.jsp
Sprint
http://www.messaging.sprintpcs.com/textmessaging/compose
Nextel
http://messaging.nextel.com/do/composer/anonymous/viewComposer
Virgin Mobile
http://textforfree.net/virginmobile/
Texting via email address email as follows:
AT&T: phonenumber@txt.att.net
T-Mobile: phonenumber@tmomail.net
Virgin Mobile: phonenumber@vmobl.com
Cingular: phonenumber@cingularme.com
Sprint: phonenumber@messaging.sprintpcs.com
Verizon: phonenumber@vtext.com
Nextel: phonenumber@messaging.nextel.com
where phonenumber = your 10 digit phone number
