Hello,
I have gone through your requirement that you need software for shipments viber messages, with the possibility of integration via API, XML, SMPP
Please share your details so can go through it and start according. I have 5+year of experience in all areas of developing app and website like restaurant, social media, dating, event, uber, gps tracking, handy, classified(buy & sell) and many more.
I built 100+ software successfully.
"Satisfaction, quality of work " is my first priority.
Awaiting for your response.
Thanks
Anamika