# Sending BCC messages with Zivver

## Introduction

How does Blind Carbon Copy (BCC) work with Zivver messages in the Zivver Outlook Plugin?

You can use Zivver to send BCC copies of messages to recipients. When you send a message with BCC recipients, Zivver creates a conversation that includes only the recipients listed in the **TO** and **CC** fields, and a new conversation for each **BCC** recipient. This way, recipients in the **TO** and **CC** fields remain unaware of the existence of BCC recipients. Also, **BCC** recipients remain unaware of each other.

After sending, messages addressed to **TO** and **CC** recipients can be seen in the **Sent items** folder. Separate conversations with **BCC** recipients are not displayed in the Outlook **Sent items** folder unless the BCC recipients reply. These separate conversations are stored in the **Archived** folder of the Zivver WebApp.

If there are replies from BCC recipients, they will be shown in the Outlook **Inbox**, as part of separate conversations.

Messages that have BCC recipients are displayed with a banner stating `A Blind Carbon Copy (BCC) of this message was sent to recipients` and a **BCC** tag in the bottom right corner. If you click one of these, the `Message Details` pane opens that shows all the recipients.

Zivver BCC messages are displayed with a **BCC** tag in the color of your organization’s branding when viewed by recipients.

## BCC send

1. Open a new message in Outlook.
2. Enter email addresses of recipients in the **TO**, **CC** and **BCC** fields as needed.
   
   _There can be at most 25 recipients in a conversation._
3. Click the **toggle** in the gray Zivver toolbar.
   
   _The Zivver toolbar will now turn green to indicate that secure mailing is on._
4. _Optional_: Follow the instructions in [Securely mailing external recipients](https://docs.zivver.com/en/user/officeplugin/references/send-secure-message-to-external-recipients.html) if applicable.
5. Click **Send**.
   
   _Your messages will now be sent securely via Zivver._

Updated on 2026-02-24