When I send an incoming or outgoing sms request, a new conversation is created and, accordingly, the message block is empty, but I need previous messages from this number to be loaded there. Maybe it can be done somehow through a plugin?
I'm just stuck right now.
If you're using Conversations, you can use 'parked interactions' so that essentially a conversation is 'paused' rather than ended, and its history is shown when the conversation is resumed.
Here's some docs about it: https://www.twilio.com/docs/flex/developer/conversations/park-an-interaction
There's a plugin you can use to do this: https://github.com/TwilioLatamEngHub/plugin-conversations-park-an-interaction