How do I send several sms, but not all at the same time?

[Taifun]

And not interested to start from a simple working example? How do I make a delay interval per text on my bulk SMS app? - #7 by TIMAI2

Here is an example which does something in the background every 5 seconds Open Source • Background Tasks: Itoo 🚀 - #1297 by Kumaraswamy

Now combine those 2 examples to send sms in the background

Taifun