What is BCC (Blind Carbon Copy)?

BCC in Office 365

BCC means Blind Carbon Copy and is an email field to which you can add several recipients. The addresses remain hidden from everyone, unlike the addresses placed in the To: or CC: (Carbon Copy) fields, which are visible to anyone who reads the message. By using BCC, no one's email address will be compromised.

By default, the BCC field is hidden in Microsoft Outlook and you cannot see it when writing a new message or replying to someone's email. If you want to send a blind copy email, first you need to make the BCC box appear. Below you will find the instructions on how to display the BCC field in all versions of Outlook.

How to send a Bcc copy in Outlook (PC)

  • When composing a message, click the Options tab > Show Fields group > Show BCC > Add the recipient name(s) to the Bcc box:

How to send a Bcc copy in Outlook 2016 - PC

How to send a Bcc copy in Outlook (Mac)

  • When composing a message, click the Options tab > BCC > Add the recipient name(s) to the Bcc box:

How to send a Bcc copy in Outlook 2016 - Mac

How to add BCC in OWA Legacy (PC & Mac)

  • From OWA > Start a new email > click the Options... button> select Show Bcc > click OK > Add the recipient name(s) to the Bcc box:

How to add BCC in OWA - Legacy Mode

How to add BCC in OWA Office 365 (PC & Mac)

  • From OWA > Start a new email > Ellipsis ... Show BCC > Add the recipient name(s) to the Bcc box:

How to add BCC in OWA - PC and Mac


From now on you will always see the blind carbon copy Bcc box when composing an email. If you want to hide a BCC field, simply click the Show BCC button again to toggle it off.