There is no way to list archived private channels if the user isn't the member of its channel

[kaakaa]

Summary

Executing mmctl channel list team doesn't list archived private channels if the user who run the command isn't member of its channel, even if the user is system admin. Not showing private channels that user isn't a member of is often the right thing to do, but there are times when system administrator want to list all channels including those the admin aren't participating in.

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Up to v5.39, I can list all channels except for direct channels by mattermost channel command, because the command call GetAll(team.id) internally. But mattermost channel has removed in v6.0. https://github.com/mattermost/mattermost-server/blob/release-5.39/cmd/mattermost/commands/channel.go#L482

[isacikgoz]

Hey @kaakaa thanks for the feedback! We have an API call GetDeletedChannelsForTeam while listing the channels but I can confirm that it does not list if the admin is not a member of archived private channel. Ticket created https://mattermost.atlassian.net/browse/MM-39918 here.

[hanzei]

Tracking this feature request via https://github.com/mattermost/mattermost/issues/19913