Note : free Send Support Only Non DND Mobile Number Note : I am not promote any website. Stap 1 : Go to Website : https://www.fast2sms.com/ Stap 2 : Sign up ( Use Extra mobile Number ) Stap 3 : Copy Api Key ( as per screen shot) Stap 4 : Create TDL Like This [#Menu: Gateway of Tally] Add: Button: Send SMS [System: Formulae] mKey : Copy your Api Key as per attachment mSMS : "This is test message" mToMobile : "9999999999" ;(for use Single send) mBulkMobile : "999999999,888888888,7777777777" [Button: Send SMS] Title : "Send SMS" Key : F8 Action : Browse Url: "https://www.fast2sms.com/dev/bulk?authorization=" + @@mKey+ "&sender_id=FSTSMS&message="+ @@mSMS +"&language=english&route=p&numbers="+ @@mToMobile