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string emailAdd = "info@abc.in";
string catg = ddlCategory.SelectedItem.Text;
string name = txtName.Text;
string mblno = txtMobile.Text;
string messageBody = "<table><tr style='background-color:Blue;color:White;'><td colspan='2'>Enquiry Details are:-</td></tr><tr><td>Category:</td><td>" +
...
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