Use "To," "Cc," and "Bcc" to reach the right people the right way

When you send an email to multiple people, you have three fields to choose from: To, Cc, and Bcc. Each one signals something different about who needs to read the message and what you expect from them. The field you pick changes how recipients see each other's names and what they think their role is in the conversation.

The To field is for people who need to read and act on your message. Everyone in the To field can see everyone else's address. Use Cc (carbon copy) when you want to include someone for their information but don't expect them to take action — they can see all the other recipients too. Use Bcc (blind carbon copy) when you need to send the same message to multiple people but don't want them to see each other's addresses. Recipients in the Bcc field cannot see who else received the email.

Key Takeaways

  • Put people in the To field if they need to read and respond to your message; everyone in To can see each other's addresses.
  • Use Cc when you want someone to see the message for context but don't expect them to act on it; Cc recipients can see all other recipients.
  • Use Bcc to send the same message to multiple people without revealing their addresses to each other — useful for newsletters or sensitive distribution lists.
  • Never put a large group in the To field if you don't want everyone replying to everyone; use Cc or Bcc instead.
  • If you reply to an email where you were Cc'd, your reply goes only to the To field and Cc field unless you change it.

When to use the To field

Put someone in the To field when they are a primary recipient and you expect them to read, respond to, or act on your message. If you're asking a question, requesting feedback, or assigning a task, the person responsible goes in To. Everyone in the To field sees all the other addresses in that field, so use it when transparency about who is involved makes sense.

For example, if you're emailing your manager and a colleague to discuss a project deadline, both go in To because both need to engage with the content. If you're sending a message to a team about a meeting time, the whole team goes in To because everyone needs to know who received it.

When to use the Cc field

Cc is for people who should see the message but aren't the primary audience. Use it when you want to keep someone in the loop without expecting them to take action. A common example: you're emailing a vendor about a problem, and you Cc your manager so they know what's happening but don't need to respond.

Cc recipients can see everyone else in the To and Cc fields. This is useful when you want transparency — the vendor knows your manager is aware of the conversation. If you reply to an email where you were Cc'd, your reply goes back to the To field and Cc field by default, so you stay part of the thread.

When to use the Bcc field

Bcc hides recipient addresses from each other. Use it when you're sending the same message to a group of people who don't need to know who else received it, or when privacy matters. A newsletter sent to many subscribers is a classic Bcc use case — each person gets the message but doesn't see the full mailing list.

Bcc is also useful when you're sending sensitive information to multiple people and don't want to expose their email addresses. If you Bcc someone, they receive the email but cannot see who else was Bcc'd, and no one else can see their address. However, if a Bcc recipient replies to your message, their reply goes only to you unless they manually add other people.

How to address an email in Gmail, Outlook, and Apple Mail

In Gmail, click the "To" field to start typing names or addresses. A dropdown appears with suggestions from your contacts. Click the name to add them. To switch to Cc or Bcc, look for the small "Cc" and "Bcc" links that appear below the To field once you've started composing. Click either link to reveal that field.

In Outlook (web or desktop), the To, Cc, and Bcc fields are visible by default at the top of the compose window. Type or paste addresses directly into whichever field you need. If you don't see Bcc, click the "Bcc" button in the ribbon (desktop) or look for it in the compose options (web).

In Apple Mail, the To field appears first. To add Cc or Bcc recipients, click the "Cc/Bcc" label at the top of the compose window, or use the menu: View > Cc Address Field or View > Bcc Address Field. Once you click, those fields appear and stay visible for that message.

Mistakes to avoid when emailing multiple people

The biggest mistake is putting a large group in the To field when you don't want a reply-all situation. If you send a message to 20 people in the To field and someone clicks reply all, their response goes to all 20 people. This creates noise and frustration. If you're sending the same message to many people and don't need them to see each other, use Bcc instead.

Another common error is forgetting that Cc recipients can see the To field. If you Cc someone to keep them informed but put something sensitive in the To field, the Cc recipient sees it anyway. Think through who needs to see what before you hit send.

Don't assume Bcc is invisible to the recipient. The person you Bcc'd can see that they received the email — they just can't see who else did. If you Bcc someone and they reply, the reply goes only to you, which can create confusion if they think they're replying to the whole group.

Addressing emails on mobile devices

On mobile, the process is similar but the interface is smaller. In Gmail's mobile app, tap the To field and type names. Tap the down arrow or "Cc/Bcc" option to reveal those fields. In Outlook mobile, tap the To field and add recipients, then tap "Cc" or "Bcc" to add people to those fields. In Apple Mail on iPhone or iPad, tap the "Cc/Bcc, From" line to expand those options.

Mobile keyboards make typing long email addresses tedious, so use your contacts list whenever possible. Most email apps let you tap a contact name to add them without typing the full address.

Frequently Asked Questions

Can I change who is in To, Cc, or Bcc after I send an email?

No. Once you send an email, you cannot change the recipient fields. If you realize you sent something to the wrong person or forgot someone, you have to send a new message. Some email services let you unsend a message for a few seconds after sending — Gmail offers this for up to 30 seconds if you enable it in settings — but this only works if the recipient hasn't opened it yet.

What happens if I reply to an email where I was Cc'd?

Your reply goes to everyone in the To field and the Cc field by default. If you want to reply only to the sender, click "Reply" instead of "Reply All." Check the recipient fields before you send to make sure you're reaching the right people.

Is it rude to Bcc someone?

It depends on context. Bcc is standard for newsletters, mailing lists, and situations where privacy matters. But Bcc-ing someone on a work conversation without their knowledge can feel sneaky. If you're Bcc-ing a manager to keep them informed, it's usually fine. If you're Bcc-ing someone to monitor a conversation they think is private, that's different.

Can I Bcc myself to keep a copy of an email I sent?

Technically yes, but it's unnecessary. Most email services automatically save a copy of every message you send in your Sent folder. Check your Sent folder instead of Bcc-ing yourself.

What's the difference between Cc and Bcc for a large group?

Cc shows everyone's address to everyone else, which can expose a long list of email addresses. Bcc keeps addresses private. For a group of 10 or more people receiving the same message, Bcc is usually better because it protects privacy and prevents accidental reply-all chaos.