Allow mobile notification grouping for notification spam

At the moment you get the notification sound played each time a user or friend sends you a DM, same as in group. Which can be quite annoying if the person is someone that sends a message per sentence, Mute exists but then you miss them writing to you in general.

Vencord/Vesktop has this plugin called OnePingPerDM and the description fits what I'd want as a feature here as well. "If unread messages are sent by a user in DMs multiple times, you'll only receive one audio ping. Read the messages to reset the limit" They also have the option for it to be either DMs, groups or both. It would be nice to have a toggle that enables something like this, where the first message sends an audio ping but the next messages don't until you've open and read them. Could be nice for servers as well, but I think DMs are the more "important" and easy to miss if you just mute someone.

The Vencord/Vesktop plugin called OnePingPerDM.

The mobile client will keep sending new notification sounds every time a message from the chat is sent, regardless of whether there already exists a notification from that DM. What this means is when people send short bursts of messages, the phone buzzes again and again and again... or worse yet, plays the notification sound if the phone is not on vibrate.

Discord already does fixed this on mobile. If there is an active notification from that person or group chat, the phone will simply "add" to the same notification rather than sending a second one right below it. I am unsure of the exact mechanism behind this, but this feature must have existed in Android's API since at least Android 6 as I remember it working there. This is especially important for unmuted group chats, where it would be handy to know the first time someone sends a message, but not to have the phone constantly ringing when there is an active conversation I'm not taking part in. One feature however that Discord does not add, that I think would be handy is setting a timer for when the phone will replay the notification sound. This is handy so that one notification being present does not mute the notifications from that group or person indefinitely until the notification is cleared.

Settings: notifications Setting line: Resend notifications: yes/no If yes: Another line displays setting for: Resend every: (30s/1m/2m/5m ... send always) (send always is what can be described as the current default behavior) The ability to pick a time would make it so that for the people that do send short bursts of messages, you get one notification, but not until roughly when they start typing again after this set period of time. Makes it harder to miss messages that would otherwise get silenced by this system. Again, all user configurable so everyone is satisfied. This is one of the main reasons I never switched from Discord to Telegram, as Discord's notification system is far better than theirs, and it would be great if Fluxer had this too.

The issue from #1762 is still reproducible. Every message arriving in the Group DM is treated as a separate notification instead of being grouped/stacked. Each notification also plays the notification sound(the recording doesn't pick up the sound but check the ring icon next to the notification, that is the phone playing the sound), causing the phone to repeatedly ring for every message. A screen recording demonstrating the issue is attached.

Version 2026.10.100, Beta 2, Channel Beta, Build 591, Android 17 (arm64), Device Google Pixel 8, Locale en-IN, Push fcm, Flutter 3.47.6, Dart 3.13.4

Expected behaviour Multiple messages from the same Group DM should be grouped/stacked into a single notification rather than each message creating a separate notification. The notification sound should also not play repeatedly for every individual message in rapid succession.

The messages appear in a pretty ugly way compared to what other messaging apps (i.e. Discord) do Additionally the messages seem to appear in reverse order

Reproduction steps

1. enable notifications
2. close the app
3. get a friend to send you a message or something

Build information Version 2026.10.100, Beta 2, Channel Beta, Build 591, Android 15 (arm64), Device motorola moto g54 5G, Locale en-US, Push fcm, Flutter 3.47.6, Dart 3.13.5