Built using Python and Nextcord.

• Listens for incoming DMs by server members.
• Mirrors those messages into a thread specific to that user.
• Messages sent into that thread are mirrored back to the user's DMs again.
• Each user has access to two threads, one normal and one anonymous.
• The normal thread's name matches that of the user that created it. Note that this is set on first creation, and will not automatically update to reflect name changes.
• The anonymous thread will be named "Anonymous user #X" where X is a 6 digit hex number.
• When the same user opens multiple threads, the same thread(s) will be reused.
• Threads can be closed either by letting Discord auto-close them, manually closing the thread (mods) or using the /close command (users)
• Mods can use the buttons to control how messages are sent.
  • "Broadcasting staff messages" vs "Staff messages muted" enables/disables message mirroring from the staff thread to the user DMs. The user can still message while muted.
  • "Responding as anonymous" vs "Responding as yourself" decides whether the mirrored messages will be credited to the staff member sending them or to the configured default identity.
• Mods can use the /settings command in a thread to have these buttons posted again, though they're also posted every time a new thread starts.
• Mods can use the /block command in a thread to prevent the user from opening any more threads of any kind.
• Users can right-click a message and select "Apps > Quote message in ModMail" to copy a server message into their modmail thread.

• GUILD: The ID of the server the bot belongs to.
• CHANNEL: The ID of the channel that new threads should be created on.
• NAME: The username of the staff default identity.
• ICON_URL: An avatar for the staff default identity.
• NOTIFICATION_ROLE: The ID of the role to mention when a thread is opened.
• TOKEN: The bot's login token.

Make your own fork, I'm bad at maintaining personal projects like this.