Just for reference, here are the carrier email addresses for sending email as an SMS. Look up the carrier for the phone in question, then send an email in this format [telephonenumber]@[carrier-name.com]

Carrier Email to SMS Gateway

Alltel [10-digit phone number]@message.alltel.com Example: 1234567890@message.alltel.com AT&T (formerly Cingular) [10-digit phone number]@txt.att.net [10-digit phone number]@mms.att.net (MMS) [10-digit phone number]@cingularme.com Example: 1234567890@txt.att.net Boost Mobile [10-digit phone number]@myboostmobile.com Example: 1234567890@myboostmobile.com Nextel (now Sprint Nextel) [10-digit telephone number]@messaging.nextel.com Example: 1234567890@messaging.nextel.com Sprint PCS (now Sprint Nextel) [10-digit phone number]@messaging.sprintpcs.com [10-digit phone number]@pm.sprint.com (MMS) Example: 1234567890@messaging.sprintpcs.com T-Mobile [10-digit phone number]@tmomail.net Example: 1234567890@tmomail.net US Cellular [10-digit phone number]email.uscc.net (SMS) [10-digit phone number]@mms.uscc.net (MMS) Example: 1234567890@email.uscc.net Verizon [10-digit phone number]@vtext.com [10-digit phone number]@vzwpix.com (MMS) Example: 1234567890@vtext.com Virgin Mobile USA [10-digit phone number]@vmobl.com Example: 1234567890@vmobl.com Free Email To SMS Gateways (International + Smaller US)

These are all I could find from Wikipedia and other sources. If you’re aware of any other ones please share them in comments and I’ll add them to the list.

Carrier Email to SMS Gateway 7-11 Speakout (USA GSM) number@cingularme.com Airtel (Karnataka, India) number@airtelkk.com Airtel Wireless (Montana, USA) number@sms.airtelmontana.com Alaska Communications Systems number@msg.acsalaska.com Aql number@text.aql.com AT&T Enterprise Paging number@page.att.net BigRedGiant Mobile Solutions number@tachyonsms.co.uk Bell Mobility & Solo Mobile (Canada) number@txt.bell.ca BPL Mobile (Mumbai, India) number@bplmobile.com Cellular One (Dobson) number@mobile.celloneusa.com Cingular (Postpaid) number@cingularme.com Centennial Wireless number@cwemail.com Cingular (GoPhone prepaid) number@cingularme.com (SMS) Claro (Brasil) number@clarotorpedo.com.br Claro (Nicaragua) number@ideasclaro-ca.com Comcel number@comcel.com.co Cricket number@sms.mycricket.com (SMS) CTI number@sms.ctimovil.com.ar Emtel (Mauritius) number@emtelworld.net Fido (Canada) number@fido.ca General Communications Inc. number@msg.gci.net Globalstar (satellite) number@msg.globalstarusa.com Helio number@messaging.sprintpcs.com Illinois Valley Cellular number@ivctext.com Iridium (satellite) number@msg.iridium.com Iusacell number@rek2.com.mx i wireless number.iws@iwspcs.net Koodo Mobile (Canada) number@msg.koodomobile.com LMT (Latvia) number@sms.lmt.lv Meteor (Ireland) number@sms.mymeteor.ie Mero Mobile (Nepal) 977number@sms.spicenepal.com MetroPCS number@mymetropcs.com Movicom (Argentina) number@sms.movistar.net.ar Mobitel (Sri Lanka) number@sms.mobitel.lk Movistar (Colombia) number@movistar.com.co MTN (South Africa) number@sms.co.za MTS (Canada) number@text.mtsmobility.com Nextel (United States) number@messaging.nextel.com Nextel (Argentina) TwoWay.11number@nextel.net.ar Orange Polska (Poland) 9digit@orange.pl Personal (Argentina) number@alertas.personal.com.ar Plus GSM (Poland) +48number@text.plusgsm.pl President’s Choice (Canada) number@txt.bell.ca Qwest number@qwestmp.com Rogers (Canada) number@pcs.rogers.com SL Interactive (Australia) number@slinteractive.com.au Sasktel (Canada) number@sms.sasktel.com Setar Mobile email (Aruba) 297+number@mas.aw Suncom number@tms.suncom.com T-Mobile (Austria) number@sms.t-mobile.at T-Mobile (UK) number@t-mobile.uk.net Telus Mobility (Canada) number@msg.telus.com Thumb Cellular number@sms.thumbcellular.com Tigo (Formerly Ola) number@sms.tigo.com.co Tracfone (prepaid) number@mmst5.tracfone.com Unicel number@utext.com Virgin Mobile (Canada) number@vmobile.ca Vodacom (South Africa) number@voda.co.za Vodafone (Italy) number@sms.vodafone.it YCC number@sms.ycc.ru MobiPCS (Hawaii only) number@mobipcs.net