I need a GST invoice software which works on my desktop with functions like add customer, sales invoice, purchase invoice, purchase stock entry, estimate receipt, repair receipt. I need the option that when I generate a invoice, a sms is auto sent to the customer mobile number (SMS api will be provided). Also should have option to send bulk sms to the customer mobiles from the software itself. Also when we enter customer mobile number / name, it should auto enter all the details once saved and should also have option to retrieve all invoices of a particular customer when entered his / her mobile number.
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Dear Sir We are already developed desktop based Inventory and accounting system Using C#. This is ready project as per your requirements need to add only SMS and some minor changes. We give you demo on TeamViewer.