Customising the welcome email sent when a new member is added to a team

[LynnProspect]

When we add new members to an MS Team, they get an automated email message welcoming them to the team. It includes content which is not appropriate for our organisation. In particular, it has a direct link to the Sharepoint site for their Team. We don't want staff to engage with these Sharepoint sites at the moment - we only want them to use the Teams front end. The email footer includes references to Twitter, Trello ad Jira - none of them are appropriate for our staff. So this automated email is very unhelpful.

I've searched high and low and it doesn't seem possible to customize the email. Is that really the case??

I'm not from an IT background - I'm from a communications/usability background. To me, this is a fundamental flaw. I don't understand why the template for the email isn't an editable file, or why it can't simply be replaced by another template. Does anybody know of a solution?

[#2]

Hello, I hear what you're saying and you're not the only one asking for it. As you noticed during your research this cannot be customized so the option you have is to simply disable the welcome message when a user is being added to the underlying group (using PowerShell).

To disable the setting -UnifiedGroupWelcomeMessageEnabled:$false.
https://docs.microsoft.com/en-us/powershell/module/exchange/set-unifiedgroup?view=exchange-ps

[#3]

To describe the welcome email as horrible would be a compliment, it is far worse than horrible.
And to compound the issue, via powershell you need to disable it per team, you can't disable it globally.
So if we move to creating teams via PS and disabling the message, you would think you could then use a Power Automate or a logic app to send a more suitable and branded welcome email, but no, it isn't that easy because the "When a new member is added" flow is also designed for targeting a specific team.
User Voice is gone....how do we get the message through to MS that we want better options around the new member welcome email?

[#4]

@AengusM it is possible to disable it for all sites! See: Office 365 Group: How to Disable Welcome Email for new members? - SharePoint Diary

[#5]

@Arie_de_Hond After the group has been created ... or during creation if using a script ... there is no default off/disable setting.

[#6]

@AengusM That's true. I found out myself today. If only you could brand the email....