Updates per Issue #6733

Author: chrisda

exchange/exchange-ps/exchange/Set-Mailbox.md

@@ -3719,8 +3719,6 @@ Accept wildcard characters: False
 ```
 
 ### -MaxReceiveSize
-This parameter is available only in on-premises Exchange.
-
 The MaxReceiveSize parameter specifies the maximum size of a message that can be sent to the mailbox. Messages larger than the maximum size are rejected.
 
 When you enter a value, qualify the value with one of the following units:
@@ -3749,7 +3747,7 @@ For any message size limit, you need to set a value that's larger than the actua
 Type: Unlimited
 Parameter Sets: (All)
 Aliases:
-Applicable: Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019
+Applicable: Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online
 
 Required: False
 Position: Named

exchange/exchange-ps/exchange/Set-MailboxPlan.md

@@ -187,7 +187,9 @@ Unqualified values are typically treated as bytes, but small values may be round
 
 A valid value is a number up to 150 MB. The default value is 36 MB.
 
-The maximum value is determined by the mailbox plan. You can lower the value, and you may be able to raise the value, but you can't exceed the maximum value that's specified by the subscription or license that corresponds to the mailbox plan.
+The maximum value is determined by the mailbox plan (subscriptions and licenses). You can lower the value, and you may be able to raise the value, but you can't exceed the maximum value that's specified by the subscription or license that corresponds to the mailbox plan.
+
+Use this parameter to change the MaxReceiveSize value for new mailboxes that you create. Use the MaxReceiveSize parameter on the Set-Mailbox cmdlet to configure the value on existing mailboxes.
 
 For any message size limit, you need to set a value that's larger than the actual size you want enforced. This accounts for the Base64 encoding of attachments and other binary data. Base64 encoding increases the size of the message by approximately 33%, so the value you specify should be approximately 33% larger than the actual message size you want enforced. For example, if you specify a maximum message size value of 64 MB, you can expect a realistic maximum message size of approximately 48 MB.
 
@@ -219,7 +221,9 @@ Unqualified values are typically treated as bytes, but small values may be round
 
 A valid value is a number up to 150 MB. The default value is 35 MB.
 
-The maximum value is determined by the mailbox plan. You can lower the value, and you may be able to raise the value, but you can't exceed the maximum value that's specified by the subscription or license that corresponds to the mailbox plan.
+The maximum value is determined by the mailbox plan (subscriptions and licenses). You can lower the value, and you may be able to raise the value, but you can't exceed the maximum value that's specified by the subscription or license that corresponds to the mailbox plan.
+
+Use this parameter to change the MaxSendSize value for new mailboxes that you create. Use the MaxSendSize parameter on the Set-Mailbox cmdlet to configure the value on existing mailboxes.
 
 For any message size limit, you need to set a value that's larger than the actual size you want enforced. This accounts for the Base64 encoding of attachments and other binary data. Base64 encoding increases the size of the message by approximately 33%, so the value you specify should be approximately 33% larger than the actual message size you want enforced. For example, if you specify a maximum message size value of 64 MB, you can expect a realistic maximum message size of approximately 48 MB.
 

exchange/exchange-ps/exchange/Set-UnifiedGroup.md

@@ -982,7 +982,7 @@ For any message size limit, you need to set a value that's larger than the actua
 Type: Unlimited
 Parameter Sets: (All)
 Aliases:
-Applicable: Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019
+Applicable: Exchange Online
 
 Required: False
 Position: Named
@@ -1014,7 +1014,7 @@ For any message size limit, you need to set a value that's larger than the actua
 Type: Unlimited
 Parameter Sets: (All)
 Aliases:
-Applicable: Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019
+Applicable: Exchange Online
 
 Required: False
 Position: Named