Telegram API to add users in bulk to groups

I could develop your bulk message system. I have developed single, bulk message system for mobile number.

Hello, my name is Karim. I will be able to create the telegram bot you require in C# within a week. I'm fluent and well experienced in C# with over 3 years of experience & a strong portfolio including the multinational ThinkLayer Minds. If required, I can also create the bot using PHP as a website. For more info, please do not hesitate to contact me right away! Looking forward to working with you :) Regards, Karim.

Hello .. i have previously developed many bots including telegram ... i conform i can handle your project Relevant Skills and Experience Please feel free to contact me Thank you

Hello, come on chat now so we can discuss in detail. thanks Logicmaker

Telegram's bot API rate-limits bot messages to about 30/minute. Will your project be able to work within that limit? If not, you might have to use the client API, which is more involved. Relevant Skills and Experience Skilled in multiple languages including Java, and familiar with Telegram's API

I have both your requirements fulfilled. Please message me to know how and I will give you a demo. Thanks :)

I have more than 15th year of experiences with .NET technologies including api integrations, ASP.NET MVC, Win Forms, WCF, diffrent databases, ... I have a question: - does application need to access database and if yes which type of database u have?