Discord-Chat-Importer

Discord-Chat-Importer allows you to import Discord channels and chats (exported with DiscordChatExporter) across Discord servers.

Steps

Go to: https://discord.com/developers/applications
Click "New Application" on the top-right.
Give it a name and press Create
On the left panel, click OAuth2
Under Scopes, check Bot
Under Bot Permissions, check View Channels, Send Messages, Manage Messages, Embed Links, Attach Files, Read Message History
Copy the URL generated under Scopes and paste it into your browser
Select the server you want the bot in
Go back to the applicaiton page
On the left panel, click Bot
Click Add Bot
Copy the Token, you'll need this for the next step.

WARNING: DO NOT try to use the bot in multiple servers at once as it was designed to only support 1. Create more bots if you have to.

Download the executable from: https://github.com/Ethorbit/Discord-Chat-Importer/releases
Open the Command Prompt or Terminal
Run the executable with the argument as the token
- Windows example: "C:\Users\Ethorbit\source\repos\Discord-Channel-Importer\bin\Debug\netcoreapp3.1\Discord-Channel-Importer.exe" "MQENWQKNQWKRNWQRQOWR.WQEOJQWEODN3AKDNAKNXeIA"

Upload the .json to a url that will display its raw text
- Example: https://www.dropbox.com/s/c5rvnig3pzeackp/Ethorbit%27s%20server%20-%20Text%20Channels%20-%20fkin-general%20%5B892291310927622204%5D.json?dl=0&raw=1 (Dropbox copied link with &raw=1 added at the end)
Enter the command in: !importer import <url> #channel

You need the Manage Messages and Manage Channels permissions.

Type !importer help for the command list.