1. In the EAC, navigate to Recipients > Mailboxes.
   
   
2. In the list of user mailboxes, click the mailbox that you want to add an email address to, and then click Edit .
   
   
3. On the mailbox properties page, click Email Address.
   
   

   Note:
   On the Email Address page, the primary SMTP address is displayed in bold text in the address list, with the uppercase SMTP value in the Type column.

4. Click Add , and then click SMTP to add an SMTP email address to this mailbox.
   
   

   Note:
   SMTP is the default email address type. You can also add Exchange Unified Messaging (EUM) addresses or custom addresses to a mailbox. For more information, see "Change user mailbox properties" in the Manage User Mailboxes topic.

5. Type the new SMTP address in the Email address box, and then click OK.
   
   The new address is displayed in the list of email addresses for the selected mailbox.
   
   
6. Click Save to save the change.
   
   

The email addresses associated with a mailbox are contained in the EmailAddresses property for the mailbox. Because it can contain more than one email address, the EmailAddresses property is known as a multivalued property. The following examples show different ways to modify a multivalued property.

This example shows how to add an SMTP address to the mailbox of Dan Jump.

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Set-Mailbox "Dan Jump" -EmailAddresses @{add="dan.jump@northamerica.contoso.com"}

This example shows how to add multiple SMTP addresses to a mailbox.

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Set-Mailbox "Dan Jump" -EmailAddresses @{add="dan.jump@northamerica.contoso.com","danj@tailspintoys.com"}

For more information about how to use this method of adding and removing values for multivalued properties, see Modifying Multivalued Properties.

This example shows another way to add email addresses to a mailbox by specifying all addresses associated with the mailbox. In this example, danj@tailspintoys.com is the new email address that you want to add. The other two email addresses are existing addresses. The address with the case-sensitive qualifier SMTP is the primary SMTP address. You have to include all email addresses for the mailbox when you use this command syntax. If you don't, the addresses specified in the command will overwrite the existing addresses.

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Set-Mailbox "Dan Jump" -EmailAddresses SMTP:dan.jump@contoso.com,dan.jump@northamerica.contoso.com,danj@tailspintoys.com

For detailed syntax and parameter information, see Set-Mailbox.

To verify that you’ve successfully added an email address to a mailbox, do one of the following:

• In the EAC, navigate to Recipients > Mailboxes, click the mailbox, and then click Edit .
  
  
• On the mailbox properties page, click Email Address.
  
  
• In the list of email addresses for the mailbox, verify that the new email address is included.
  
  

Or

• Run the following command in the Shell.
  
  

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  Get-Mailbox <identity> | fl EmailAddresses

• Verify that the new email address is included in the results.
  
  

1. In the EAC, navigate to Recipients > Mailboxes.
   
   
2. In the list of user mailboxes, click the mailbox that you want to remove an email address from, and then click Edit .
   
   
3. On the mailbox properties page, click Email Address.
   
   
4. In the list of email addresses, select the address you want to remove, and then click Remove .
   
   
5. Click Save to save the change.
   
   

This example shows how to remove an email address from the mailbox of Janet Schorr.

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Set-Mailbox "Janet Schorr" -EmailAddresses @{remove="janets@corp.contoso.com"}

This example shows how to remove multiple addresses from a mailbox.

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Set-Mailbox "Janet Schorr" -EmailAddresses @{remove="janet.schorr@corp.contoso.com","janets@tailspintoys.com"}

For more information about how to use this method of adding and removing values for multivalued properties, see Modifying Multivalued Properties.

You can also remove an email address by omitting it from the command to set email addresses for a mailbox. For example, let's say Janet Schorr's mailbox has three email addresses: janets@contoso.com (the primary SMTP address), janets@corp.contoso.com, and janets@tailspintoys.com. To remove the address janets@corp.contoso.com, you would run the following command.

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Set-Mailbox "Janet Schorr" -EmailAddresses SMTP:janets@contoso.com,janets@tailspintoys.com

Because janets@corp.contoso.com was omitted in the previous command, it’s removed from the mailbox.

For detailed syntax and parameter information, see Set-Mailbox.

To verify that you’ve successfully removed an email address from a mailbox, do one of the following:

• In the EAC, navigate to Recipients > Mailboxes, click the mailbox, and then click Edit .
  
  
• On the mailbox properties page, click Email Address.
  
  
• In the list of email addresses for the mailbox, verify that the email address isn't included.
  
  

Or

• Run the following command in the Shell.
  
  

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  Get-Mailbox <identity> | fl EmailAddresses

• Verify that the email address isn't included in the results.
  
  

To verify that you’ve successfully added an email address to multiple mailboxes, do one of the following:

• In the EAC, navigate to Recipients > Mailboxes, click a mailbox that you added the address to, and then click Edit .
  
  
• On the mailbox properties page, click Email Address.
  
  
• In the list of email addresses for the mailbox, verify that the new email address is included.
  
  

Or

• Run the following command in the Shell, using the same CSV file that you used to add the new email address.
  
  

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  Import-CSV "C:\Users\Administrator\Desktop\AddEmailAddress.csv" | ForEach {Get-Mailbox $_.Identity | fl Name,EmailAddresses}

• Verify that the new email address is included in the results for each mailbox.