Who This Is For / When to Use
Teams sending emails that require multiple stakeholders to be informed.
Users who need to keep recipients hidden for privacy or compliance reasons.
Anyone using email through Conversations, including 2-way sync providers.
What CC and BCC Do
CC (Carbon Copy)
Sends a copy of the email to additional recipients.
All recipients can see everyone listed in To and CC.
Best for transparency and collaboration.
BCC (Blind Carbon Copy)
Sends a copy of the email to additional recipients without revealing them.
BCC recipients are hidden from all other recipients.
Best for privacy, compliance, or mass email scenarios.
Where CC and BCC Are Available
New email conversations.
Replies inside existing email threads.
All supported email channels, including:
Mailgun
2-way sync email (Gmail and Outlook)
SMTP email
Custom email providers
Custom Conversations providers
How to Add CC and BCC Recipients
Step 1: Open the Email Composer
Go to Conversations.
Click New Email, or open an existing email and click Reply.
Step 2: Reveal the CC and BCC Fields
In the email header area, click CC BCC on the right side.
The CC and BCC fields will expand next to the To field.
Step 3: Add Recipients
Click into the CC or BCC field.
Select an email from the dropdown or manually type an email address.
Multiple email addresses are supported.
Step 4: Send or Reply
Compose your message as normal.
Send the email.
In existing threads, replies behave as Reply All when CC or BCC recipients are present.
Important Behavior Notes
CC and BCC recipients cannot be removed once an email thread has started.
Always verify recipients before sending the first message.
Replies in threads with CC or BCC act as Reply All.
Common Issues and Fixes
Gmail “Delivery Incomplete” Error When Using BCC
Gmail may send a “Delivery incomplete” notification when BCC is used.
This happens because BCC is used internally for logging, and Gmail does not receive a delivery receipt.
The email is still successfully logged and sent in Kyrios.
FAQ
Will a new contact be created if I add an external email to CC or BCC?
No. Adding an email address to CC or BCC does not create a new contact.
What happens if I CC or BCC an email that already belongs to an existing contact?
The conversation will appear only under the primary To contact’s thread, not under the CC or BCC contact’s thread.
Can I manually type new email addresses into CC or BCC?
Yes. You can select from existing contacts or manually type any valid email address.
Can I remove CC or BCC recipients after the conversation starts?
No. CC and BCC recipients cannot be removed once the email thread has been initiated.
Is CC/BCC supported with 2-way sync email?
Yes. CC and BCC are fully supported with 2-way sync email for Gmail and Outlook, as well as all other supported email channels.