In order to send group SMS messages, create your .txt file with your group number, then do the followings:
1- Type sender name
2- Select type of your message
3- Select your group
4- Write your text please check how many characters your SMS is
5- Click Send
Note: Your .txt file mustn't have anything besides phone numbers (No Names), and not more than 20,000 numbers are allowed per .txt file. Group numbers with country codes must be written in this format for example:
601111111111
601111111111
601111111111
601111111111
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