Currently it is not possible to have notifications triggered based on keywords, for example if there are any emergency keywords, a certain ringtone or vibration (or both) will be triggered.

This would be important in the event of any emergency that requires immediate action.

This would require major architectural changes for the Mattermost server, but adding some use cases to gather feedback from the community.

Server admins wouldn't be able to read the content of conversations because they don't hold the keys to decrypt, which means users wouldn't have to worry about
- Server admins spying on their private conversations
- Governments subpoening server admins into handing over conversations
- Hackers taking control of the server being able to read the conversations

Support Gitea's OAuth2 provider as an authentication source.

Currently, the team edition only supports GitLab as an OAuth2 source. GitLab is pretty heavyweight and many people prefer other software for a variety of reasons.

Gitea (https://gitea.io/en-us/) is a really nice open source, community supported Git server. They recently added support for acting as an OAuth2 provider (see https://docs.gitea.io/en-us/oauth2-provider/ for documentation). It would be great if Mattermost would support Gitea as an OAuth2 provider.

The docs explains that:

"IP addresses, for example 10.100.200.101, do not return results."
(https://docs.mattermost.com/help/getting-started/searching.html#hashtags)

I would like to be able to search on ip-strings from my messages.

The same way we can send messages, we should be able to send voice messages.

It should be as simple as click "add voice", record what you want, press send and it's made available on the server for others to listen.

It should be supported by browser and mobile client apps.

I would like to add a string to the header and purpose every time it is changed via a plugin, but this is currently not possible as there is no hook for channel metadata in the plugin API.

I consider it unacceptable that I can't choose to disable having my words replaced with emoji, without also having to give up on EVERY SINGLE post formatting feature. I want to be able to use post formatting, just NOT have any emoji appear without me explicitly choosing to insert them.

for the default search backend (sql), search results are capped at 100!

you can verify this by loading jquery and doing:

$('.search-item__container').length;

you can see that paging isn't supported:

https://github.com/mattermost/mattermost-server/blob/master/app/post.go#L821

and the sql uses `LIMIT 100`:

https://github.com/mattermost/mattermost-server/blob/master/store/sqlstore/post_store.go#L834

i know this isn't an issue in enterprise because you're using elasticsearch, but please either bring elasticsearch to team edition or fix the default search backend. 100 results is sad :(

A user should be able to easily see & search the list of all channels they have joined and can join. I'm seeing a number of duplicate channels created across teams because the user did not know it existed in another location.

Allow plugins to add to the settings menu, much like they can add to the System Console settings.

It would be nice to be able to click/drag the sidebar (where channels are) and resize it/ hide it if desired.

Resizing it and having a channel name abbreviated with ... could make sense;

ex: Town Square once it starts getting cut off would become Tow... (depending on how small you make the sidebar). Then if you go over far enough it snaps into a hidden position

To have a single mattermost client connected to several teams is a great feature.

What i find missing is a keyboard shortcut to change team. The other shortcuts are very good and I usually can navigate through many channels and conversations with keyboard only, but when I see that have received in other team, I have to use the mouse.

Perhaps you could add tabs or something similar to the "quick channel switcher" (Ctrl-K) or have a new shortcut to switch teams (e.g. Ctrl-T).

Add server plugin hooks for access control (permission change) and logout events to enable developers to create custom server plugins to integrate with internal auditing/intrusion detection tools.

https://developers.mattermost.com/extend/plugins/server/reference/#Hooks

Currently tons of space is being wasted in the sidebar. Allow for tighter spacing of channel/user names so more of the list can be displayed at once.

I would like to see more support for Jira events for Mattermost Webhooks, other than just; Issue: Created, Updated and Deleted

Especially would like to see events for Created, Updated and Deleted comments