161 votesAnonymous commented
We are the parent company of 4 subsidiary division with 4 different domain suffixes in AD sync'd to AAD. Once we start adding customers/vendors as guest users in our Azure/O365 we'd like to adjust our branding for each division.
While you cannot customize the default welcome mail for Office 365 Groups, disabling the welcome mail is possible with an extra parameter in the Set-UnifiedGroup cmdlet in Exchange PowerShell: -UnifiedGroupWelcomeMessageEnabled:$false. See https://docs.microsoft.com/en-us/powershell/module/exchange/users-and-groups/set-unifiedgroup
Use this as a part of a custom group creation flow if you would like to restrict and/or customize the welcome mail for many groups across your tenant.Anonymous commented
It would be useful if the welcome message could be enabled/disabled during the creation of the O365 group instead of controlling this at the tenant level. Also agree that having the ability to customize the welcome message would allow for a more effective means of communicating to the users.