> This page is part of the [Customer.io documentation](https://docs.customer.io). For the complete index, see [llms.txt](https://docs.customer.io/llms.txt).
> Last updated: July 10, 2026

# What does the Fake BCC option do?

## Overview: BCC vs fake BCC

You can add a **BCC address** to your emails to keep certain teams in the loop while maintaining their privacy. BCC addresses won’t receive any replies to the email, and recipients won’t see the BCC addresses. Your message’s metrics reflect your primary and BCC recipients. For instance, your opened metrics include when a BCC address opens the email.

On the other hand, your metrics exclude messages sent to **fake BCC addresses**. Additionally, the subject line of emails sent to a fake BCC address includes the recipient’s email address, which can help you track sensitive refunds or other transactions for your customers.

If you want copied recipients to be visible to everyone who receives the email, add a **CC address** instead. CC recipients track like a regular BCC: their opens, clicks, and bounces count toward your message metrics.

[![The envelope of an email with the fake BCC field checked.](https://docs.customer.io/images/fake-bcc-ds.png)](#095fcc6a7caec9b97f3c7ddc18af04b9-lightbox)

You should send to a fake BCC address when you don’t want to track opened, clicked, and other metrics for fake BCC recipients. However, emails sent to both regular and fake BCC addresses count towards bounced metrics.

It’s best practice to copy a shared inbox, not an individual, so staffing changes don’t affect your monitoring.

Learn more about [use cases and best practices in our partner’s doc!](https://www.trypropel.ai/partners/customer-io/fake-bcc-option)

## Send a regular BCC

If you want to send a regular BCC, select **Fake BCC** in the email envelope to remove the setting.

## Sending to a CRM

If you’re sending data to your CRM, you’ll need to send a regular BCC instead of a fake BCC. Adjust the setting in your email envelope.

To learn more about how HubSpot tracks BCC addresses, go to their [docs](https://knowledge.hubspot.com/connected-email/log-email-in-your-crm-with-the-bcc-or-forwarding-address).

*   *   [Overview: BCC vs fake BCC](#overview-bcc-vs-fake-bcc)
    *   [Send a regular BCC](#send-a-regular-bcc)
    *   [Sending to a CRM](#sending-to-a-crm)

Copy page

Copy page [Download .md](/messaging/channels/email/headers/fake-bcc.md)

Is this page helpful?

![](https://docs.customer.io/images/export-success.png) ![](https://docs.customer.io/images/export-failure.png)

# How can we make it better?

Close

Do you need help from Customer.io support?  No  
 Yes

What part of Customer.io do you need help with? 

How can we improve this page?

Email (optional):  Please provide a valid email address

 I am not a bot

 

We appreciate your feedback!

Our support team will contact you as soon as possible