Is it possible to CC or BCC a contact in a sequence ?

At this time, it's not possible to CC or BCC someone through Interseller sequences.

This is because our email tracking data (opens, clicks and replies) will get thrown off when you copy an email to another person.

If a CC'd colleague or contact were to open or reply to the email, Interseller will mark the email as opened or replied because there's not a way to differentiate who actually opened or clicked the email.

Here is what we recommend instead:

If you work in a team where you receive replies and reply on behalf of your teammate, we recommend using a tool like Front so you can collaborate on each other's email inboxes.