What is the simplest way to add support chat to any Flutter app?

I’m curious how other Flutter developers are handling in-app support today.

The options seem all over the place — from full helpdesk SDKs, to custom backends, to simple email links. Each approach has different trade-offs in terms of setup, maintenance, user experience, and cost.

So I’d love to hear from people who have built or shipped Flutter apps:

• What’s your current solution for in-app support or live chat?
• Are you using a third-party SDK, something custom, or no chat at all?
• What challenges or limitations have you run into with your approach?

Hoping this can be a useful thread for anyone exploring support options in Flutter.