| Attribute | Description | Supported operations | 
|---|---|---|
| AcceptMessagesOnlyFromSendersOrMembers | Gets or sets the senders who can send email messages to the Microsoft 365 group. This attribute can take senders in any of the following formats. For example: 
 | Read, Write | 
| AccessType | The AccessType parameter specifies the privacy type for the Microsoft 365 group. The acceptable values are: 
 | Read, Write | 
| Alias | Gets or sets the alias of the Microsoft 365 group. | Read, Write | 
| AlwaysSubscribeMembersToCalendarEvents | Controls the default subscription settings of the new members that are added to the Microsoft 365 group. | Read, Write | 
| AuditLogAgeLimit | Gets or sets the retention period for the mailbox audit logs. Logs whose age exceeds the specified retention period are deleted. | Read, Write | 
| AutoSubscribeNewMembers | Specifies if you have to automatically subscribe new members that are added to the Microsoft 365 Group to conversations and calendar events. | Read, Write | 
| CalendarMemberReadOnly | Specifies if you have to set read-only Calendar permissions to the Microsoft 365 group for members of the group. | Read | 
| Classification | Specifies the classification for the Microsoft 365 Group. | Read | 
| CustomAttribute1 | Get or set the additional custom values you specify. | Read, Write | 
| CustomAttribute2 | ||
| CustomAttribute3 | ||
| CustomAttribute4 | ||
| CustomAttribute5 | ||
| CustomAttribute6 | ||
| CustomAttribute7 | ||
| CustomAttribute8 | ||
| CustomAttribute9 | ||
| DataEncryptionPolicy | Specifies the data encryption policy that is applied to the Microsoft 365 group. | Read | 
| DisplayName | Gets or sets the display name of the Microsoft 365 group. | Read, Write | 
| EmailAddresses | Get all the Microsoft 365 proxy addresses of the mailbox. The proxy addresses also include the primary SMTP address. | Read | 
| ExtensionCustomAttribute1 | Get or set the additional custom values you specify. These attributes are multivalued. | Read, Write | 
| ExtensionCustomAttribute2 | ||
| ExtensionCustomAttribute3 | ||
| ExtensionCustomAttribute4 | ||
| ExtensionCustomAttribute5 | ||
| GrantSendOnBehalfTo | Specifies the sender who can send on behalf of this Microsoft 365 group. | Read, Write | 
| HiddenFromAddressListsEnabled | Gets or sets whether this mailbox is hidden from address lists. | Read, Write | 
| HiddenFromExchangeClientsEnabled | Specifies if the Microsoft 365 Group is hidden from the Outlook clients connected to Microsoft 365. | Read, Write | 
| Language | Gets or sets preferred languages for the Microsoft 365 group. | Read, Write | 
| MailboxRegion | This is reserved for internal Microsoft use. | Read | 
| MailTip | Gets or sets the message displayed to senders when they start writing an email message to this recipient. | Read | 
| MailTipTranslations | Gets or sets the MailTip message translations in additional languages. | Read | 
| MaxReceiveSize | Specifies the maximum size of an email message that can be sent to this group | Read, Write | 
| MaxSendSize | Specifies the maximum size of an email message that can be sent by this group. | Read, Write | 
| ModeratedBy | Gets or sets the users who are moderating the messages sent to the Microsoft 365 group. | Read, Write | 
| ModerationEnabled | Gets or sets whether moderation is enabled for the Microsoft 365 group. | Read, Write | 
| Notes | Gets or sets notes about the user. | Read, Write | 
| PrimarySmtpAddress | Gets or sets primary SMTP address of the Microsoft 365 group. | Read, Write | 
| RejectMessagesFromSendersOrMembers | Gets or sets the senders that cannot send email messages to the Microsoft 365 group. The messages sent are rejected. | Read, Write | 
| RequireSenderAuthenticationEnabled | Gets or sets if the senders that send messages to this Microsoft 365 group must be authenticated. | Read, Write | 
| SubscriptionEnabled | Specifies if the subscriptions to conversations and calendar events are enabled for the Microsoft 365 group. | Read, Write | 
| UnifiedGroupWelcomeMessageEnabled | Specifies if the option to send the system-generated welcome messages to users who are added as members to the Microsoft 365 group should be enable or disabled. | Read, Write | 
