O365 Group Email Address Recipient Limit?

[MikeMM]

Does anyone know what the recepient limit is for an O365 group email address, specifically with dynamic membership if that matters?  Since O365 groups can have thousands of members I would assume you could email the entire group.  When I put the address into Outlook I see a warning that it will be sent to at least 1000 members, so I wanted to verify it would send it to more than that and if there is in fact a hard limit?

[#2 · Accepted solution]

That's not the recipient limit, when you address a group it actually counts as a single recipient. What you're seeing is the "large audience" mail tip: https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/mailtips/configure-...