Sub WhatsAppMsg()
Dim LastRow As Long
Dim i As Integer
Dim strip As String
Dim strPhoneNumber As String
Dim strmessage As String
Dim strPostData As String
Dim IE As Object
LastRow = Range("A" & Rows.Count).End(xlUp).Row
For i = 2 To LastRow
strPhoneNumber = Sheets("Data").Cells(i, 1).Value
strmessage = Sheets("Data").Cells(i, 2).Value
'IE.navigate "whatsapp://send?phone=phone_number&text=your_message"
strPostData = "whatsapp://send?phone=" & strPhoneNumber & "&text=" & strmessage
Set IE = CreateObject("InternetExplorer.Application")
IE.navigate strPostData
Application.Wait Now() + TimeSerial(0, 0, 5)
SendKeys "~"
Next i
End Sub