Add a collapse button for images and link previews for those times when someone posts a massive animated gif into the channel.

When login in mattermost it shows "Your teams" that I must select to go to "Town Square".

If only one team is available, it should skip this screen and go immediately to that team's Town Square

Slack offers a very cool possibility: you can ask the bot to remind you of a message after some time.

This is *extremely useful* when you post a message which requires some reaction by some other users - if (unfortunately) no reaction comes, it is very easy to forget about the question, which will not happen if you set a reminder!

That would be a very nice feature to add to mattermost

In _Advanced Preferences_ in Slack there is an option that allows the [enter] behavior to change while in a code block (```).

It would be nice to have this in mattermost.

Moving from GitHub issues so this feature idea can be discussed and upvoted: https://github.com/mattermost/desktop/issues/86

In a professional environment, it would not be polite to allow some kind of language specially in open channels. It would be very useful for admins to handle a small database of words not permitted in their channel and a filter that replaces the "offending words" for symbols or other words defined by them.

Edit others' messages in public channels. Give admins the right to restrict the editing rights to certain users and channels.

Use Cases:

1.) Something in a message is wrong, commit number, bug report number, link, etc.
2.) Move message to the appropriate channel, user might have posted it to the wrong channel

This of course also allows censorship, which is why a history of the messages would be nice.

Ability to upload a team icon, and show it on the team select page.

Also, it would be nice to show them on the desktop app tabs.

When people create new channels within a team, it would be great to have a popup that shows team members within the channel a screen something like "New Channels created since your last visit, refresh, etc..."

What we are finding is people are creating new channels within Teams, yet no one knows about them unless they click on the More link within the team.

When there are multiple threads going on in the same channel, all lines are prefixed by a grey vertical bar. The only way to separate the threads is to read the reference message. If the vertical bars had different colors (randomly selected), it would be easy to at a glance see which messages belongs to which threads.

Like or +1 concept from social networks for single messages.
Should display the number of likes near the message-title.

Do the same as the pure Mattermost website, which is changing the HTML <title>. Just copy the web page <title> into the Main Window Caption. As a Manic Time User, this would allow me to summarize the time spend at the different channels, groups and messages.
Refer to https://github.com/mattermost/desktop/issues/175#issuecomment-228636708

For organizations with advanced compliance requirements, this feature should enable a System Administrator to omit the inclusion of message contents in email notifications.

The idea is that a guest member can post messages to a channel, but he can only see replies addressed to him. It might work for both private channels than public ones. In my opinion, the functionality would give great value to the already growing product!

Direct Message yourself for private notes, etc, like Slack: https://get.slack.help/hc/en-us/articles/219899267-Saving-private-notes-and-files

It would be GREAT to display the teams as tabs instead of a list.

The benefit here is if something is mentioned in a channel within that team, you could flash/graphically activate the tab to notify the user that there is activity.

The way it is right now, it's very confusing to have to click down through the list of teams to find active conversations.

I like to see information about other Users when I klick their name in the chat. Slack show Username, Mail, Timezone and Phone - I think that's a good start for a simple user profile.
Users could decide which information they like to make public.

It would be handy if search results were dereferencable via a URL.

Not all communications in our org are done via MatterMost (email is still popular) and I would like the ability to link to search results via a URL such as https://mattermost.org.com/search/search-term

This would enable me to refer to (ever-changing) search results from places external to MatterMost.

Most popular text editors change the text direction automatically to RTL (Rgiht to Left) when you enter a text in RTL languages such as Persian, Arabic or Hebrew. If that was the case in the Mattermost, we (the RTL language speaking people!) could use Mattermost much more productively, and localization to Farsi, Arabic, etc was possible.