Get-exTeamUsers

Get-exTeamUsers
   -Domain <String>
   -Cookie <String>
   [-FilterExp <String>]
   [<CommonParameters>]

#test variables
$myDomain = "teams.appvity.com"
$myChannelName = "Team Playground V2"
$myTeam = "19:ca7641c904da4fdf92820722ff6489fc@thread.skype"
$myChannel = "19:2645ed60e7d941ddb954f5e09366bb48@tGethread.skype"
$myChannelName = "Anade Project"
$myGroupId = "2aee63b0-a616-4d52-b22b-84c971ba0d25"

# connect to Team instance
$myAccount = "oliver@anadea.com"

$userCredential = Get-Credential -UserName $myAccount -Message "Type the password."
Connect-MicrosoftTeams -Credential $userCredential 

Write-Host "++++ Get-exTeamUsers for <--Your channel-->" 
$myUsers = Get-exTeamUsers -Domain $myDomain -FilterExp "username eq 'oliver@anadea.com'"
#$myUsers
$myUsers | Format-Table -Property displayname, username, source, _id, email
Write-Host "+ Total users count:" $myUsers.Count
Write-Host "-------------------------------------------------------------------------"