How to Show BCC in Outlook (2026): Step-by-Step for Classic, New, Web, and Mobile

How to show BCC in Outlook — quick reference

If you just need the BCC field visible right now, here's the 30-second cheat sheet for every Outlook version. Detailed steps with troubleshooting are below.

Important note for Windows users: since 2025 there are now two Outlook apps on Windows — the Classic version (the one with the ribbon) and the New Outlook (closer to the web UI). Microsoft is gradually migrating users. The steps differ — check which one you're using by looking at the top of the window (Classic has a wider ribbon; New has a narrower toolbar).

What BCC is (and what it isn't)

BCC stands for Blind Carbon Copy — recipients in this field receive the email but their addresses are hidden from everyone else on the message. It's the privacy-safe way to send mass emails, internal updates, and any message where the recipient list shouldn't be visible.

What BCC does:

• Hides recipients from each other
• Prevents "Reply All" chains from flooding everyone's inbox
• Lets you privately copy stakeholders without revealing it to the main recipient

What BCC doesn't do:

• It does not make the email itself secret or encrypted — the email still travels in plain form
• It does not hide your message from the recipients you BCC'd; they still see the To/CC list
• It does not work as audit logging — for that, use a CC, audit logs, or a proper helpdesk

If you want recipients to know they were copied but not engage in the thread, use CC. If you want true confidentiality, use BCC. If you want a logged trail of who saw what, use a proper email/helpdesk system, not BCC.

How to show BCC in New Outlook for Windows

The New Outlook for Windows (rolling out since mid-2024) is a redesigned app that uses the same code as Outlook on the web. The BCC field is hidden by default — here's how to show it.

For a single email:

1. Click New mail (top-left)
2. In the compose window, click the Options tab (in the top toolbar of the compose window)
3. Click Bcc — the field appears between the To/Cc fields and the subject line

To always show BCC by default:

1. Click the Settings gear (top-right of the main window)
2. Choose Mail in the left sidebar, then Compose and reply
3. Scroll to Message format and check Show Bcc
4. Close settings — the change is saved automatically

If you don't see the Options tab in compose, expand the compose window (click the arrow to pop it out into a full window) and try again. The toolbar is minimized in the inline compose view.

How to show BCC in Classic Outlook for Windows

Classic Outlook (the desktop app with the wide ribbon, Outlook 365/2021/2019) keeps BCC behind the Options tab.

For a single email:

1. Click New Email (top-left of the home tab)
2. In the compose window, click the Options tab in the ribbon
3. In the Show Fields group, click Bcc — the field appears below CC

To always show BCC:

1. Click File → Options
2. In the left sidebar, click Mail
3. Scroll to Compose and reply messages
4. Check Always show Bcc
5. Click OK

The setting persists across all your accounts in Classic Outlook. If you have Classic Outlook open and toggle this, you may need to close and reopen the compose window for it to take effect.

How to show BCC in Outlook on the web (Outlook.com / Outlook 365)

The web version is similar to New Outlook for Windows because they share the same codebase.

For a single email:

1. Click New mail
2. In the compose pane, look for the ⋯ (three dots) menu — usually at the top-right of the compose window
3. Click Show Bcc — the field appears

Some variants show BCC differently:

• Outlook 365 web (work/school account) — usually has Bcc as a clickable label next to To and Cc. Click the label to expand the field.
• Outlook.com (personal) — uses the ⋯ menu approach above.

To always show BCC:

1. Click the Settings gear (top-right)
2. Choose Mail → Compose and reply
3. Find Show Bcc and toggle it on
4. Save

How to show BCC in Outlook for Mac

The Mac version handles BCC slightly differently — the field is often hidden as a collapsed clickable label near the From and CC fields.

For a single email:

1. Click New Email (or press ⌘ + N)
2. In the compose window, click the Options tab in the toolbar
3. Click Bcc — the field appears below CC

Alternatively, depending on your Outlook Mac version:

1. Open a new compose window
2. Look for Cc and Bcc as small labels near To and From
3. Click Bcc to expand the field

To always show BCC:

1. From the menu bar, click Outlook → Preferences (or Settings in newer versions, ⌘ + ,)
2. Click Composing
3. Check Show Bcc field by default
4. Close preferences

The setting applies to all new compose windows immediately.

How to show BCC in Outlook for iOS and Android

The mobile apps consolidate To/CC/BCC into a single expandable section to save screen space.

For a single email:

1. Tap the compose button (pencil icon, usually bottom-right)
2. In the compose screen, tap the arrow (▾) next to the From field — this expands To, CC, and BCC
3. Tap in the Bcc row to add recipients

To always show BCC (some versions only):

1. Open the Outlook mobile app
2. Tap your profile picture or initials (top-left)
3. Tap the Settings gear
4. Tap Compose or Email
5. Toggle Show Bcc

If you don't see this setting, your version may not support always-on BCC — you'll have to expand the field each time.

How BCC actually works behind the scenes

When you send an email with BCC, your mail server:

1. Receives the message with the full recipient list (To, CC, BCC)
2. Strips the BCC field from the message headers sent to the To and CC recipients
3. Delivers separate copies to each BCC recipient, with the BCC field removed from their copy too

This means a BCC recipient sees the To and CC lists but not the other BCC recipients. Three subtle implications:

1. Reply All exposes BCC recipients. If a BCC recipient hits Reply All, their address appears in the reply — visible to everyone on the To and CC lists. This is the single most common BCC mistake. Always remind BCC recipients not to Reply All.

2. BCC is invisible to email tracking tools. Most read-receipt and tracking systems don't see BCC recipients because BCC is stripped from headers before delivery. If you need to track who opened, use a marketing platform that handles BCC tracking explicitly.

3. Spam filters sometimes flag large BCC lists. Sending one email to 500 BCC addresses can trigger spam protection on the receiving end. For mass sends, break into batches of 50-100 or use a dedicated email marketing tool.

When to use BCC (and when not to)

Use BCC when:

• Privacy matters — sending to a list of clients, customers, or contacts who shouldn't see each other (GDPR-relevant)
• Preventing reply-all chains — newsletters, announcements, mass internal updates
• Discrete copying — keeping a stakeholder informed without signaling involvement to the main recipient (HR copying a manager on a delicate email, for example)

Don't use BCC when:

• You're secretly copying your boss on a colleague's email. This is a trust killer. If you need to escalate, do it openly, not via stealth BCC.
• You want a record but the recipient should know. Use CC — that's literally what it's for.
• The team needs to collaborate on a reply. Hidden recipients can't participate; you need a shared inbox or a CC.
• Compliance/audit requires visibility. BCC is bad audit logging — use proper compliance tools or a helpdesk that logs everything.

A simple rule of thumb: if you'd be embarrassed for the To recipient to find out about the BCC, you probably shouldn't BCC. The exceptions are mass-send privacy (newsletters) and specific HR/legal protocols where the BCC is policy.

Troubleshooting: BCC not showing in Outlook

Problem: I enabled "Always show BCC" but it still doesn't appear.

• Close the compose window and open a new one — the setting applies to new compose sessions only
• In Classic Outlook, try restarting the app entirely (sometimes a profile reload is needed)
• In New Outlook / Web, log out and back in
• If using multiple accounts, the setting may be per-account on some versions — check each

Problem: The Options tab is missing from my compose window.

• You're likely in the inline-compose view (mini compose pane). Click the pop-out arrow at the top of the compose window to open it in a full window — the Options tab will appear
• Some lightweight modes (Outlook on a tablet, Outlook lite) hide the Options tab entirely. Switch to the desktop or web version

Problem: I sent a BCC and the recipient sees they were BCC'd.

• They can tell they were BCC'd because their address isn't in the To or CC list. That's normal and expected — BCC hides them from each other, not from themselves.
• If you wanted them to think they were the primary recipient, use a separate email instead.

Problem: My BCC emails are going to spam.

• Large BCC lists (50+) trigger spam protection. Break into smaller batches
• Make sure your sending domain has SPF, DKIM, and DMARC records configured
• For mass sends (newsletters, marketing), use a dedicated email service (Mailchimp, ConvertKit, Brevo) — they handle authentication and deliverability properly

Advanced: automating BCC with Outlook rules

For users who repeatedly BCC the same address (an archive mailbox, a manager, a CRM), Outlook can do it automatically.

Classic Outlook for Windows:

1. File → Manage Rules & Alerts → New Rule
2. Start from a blank rule: Apply rule on messages I send
3. Conditions: pick any (e.g., sent to people or public group with a specific recipient)
4. Action: Cc the message to people or public group (Outlook uses CC for this rule action; for true BCC, use a VBA macro or a third-party add-in)
5. Finish and name the rule

Note that Microsoft has deliberately limited BCC automation in Outlook because it can be misused (silent surveillance of all sent mail). For genuine compliance auditing, use Microsoft 365 journaling, not Outlook rules.

BCC for team email — when one inbox handles all replies

If your reason for asking about BCC is "we need to keep multiple teammates aware of customer email conversations," BCC is usually the wrong tool. The right tool is a shared inbox where the whole team sees every conversation natively without anyone being CC'd or BCC'd.

Triageflow is an AI shared inbox built for this exact use case — your team sees every customer email in one place, the AI drafts routine replies, and everyone has visibility without inbox chaos or BCC etiquette debates. If you're using BCC to keep teammates in the loop on customer email, that's a workaround worth examining.

But if your question is really just "how do I show BCC in Outlook for one specific email" — the sections above cover every Outlook version. No tool change needed.

Frequently asked questions about BCC in Outlook

How do I show BCC in Outlook?

In New Outlook or Web: compose a new email → click Options (or the ⋯ menu) → click Bcc. In Classic Outlook for Windows: New Email → Options tab → Bcc button. Detailed steps for each platform are in the sections above.

How do I always show BCC in Outlook by default?

In Classic Outlook: File → Options → Mail → Compose and reply → Always show Bcc. In New Outlook / Web: Settings (⚙) → Mail → Compose and reply → Show Bcc. In Mac: Preferences → Composing → Show Bcc field by default.

What's the difference between BCC and CC?

CC (Carbon Copy) recipients are visible to everyone on the email. BCC (Blind Carbon Copy) recipients are hidden — the To and CC recipients don't know they were copied. BCC also hides BCC recipients from each other.

Can the recipient see who's BCC'd?

No. BCC recipients are stripped from email headers before delivery. The To and CC recipients see only each other; BCC recipients see To and CC but not other BCC recipients.

How do I see if someone BCC'd me on an email?

You can tell because your address doesn't appear in the visible To or CC fields. Some email clients explicitly label the message as "you were Bcc'd" — Outlook doesn't always show this. Check the To/CC fields — if you're not in either but received the email, you were BCC'd.

Can I BCC myself automatically on every email I send?

Classic Outlook for Windows: yes, via Manage Rules & Alerts → New Rule → Apply rule on messages I send → Cc the message to [your address]. Outlook technically uses CC for this rule, not BCC — but the effect is similar for archival purposes. For true compliance-grade BCC of all sent mail, use Microsoft 365 journaling, not Outlook rules.

Why does BCC sometimes go to spam?

Large BCC lists (50+ recipients) often trigger spam filters on the receiving server. Break large lists into batches of 20-50, or use a dedicated email marketing platform for mass sends. Also make sure your sending domain has proper SPF, DKIM, and DMARC records.

Does Reply All include BCC recipients?

No — BCC recipients are not visible to the To/CC recipients, so Reply All from those recipients won't include the BCC. But if a BCC recipient hits Reply All themselves, their address will appear in the reply and become visible to everyone. This is the most common BCC mistake.

What's the maximum number of BCC recipients in Outlook?

It depends on your account type. Outlook.com personal accounts: 500 recipients total (To + CC + BCC combined) per email, 500 emails per day. Microsoft 365 (work/school): typically 500 per message, 10,000 per day for the standard limit. Large mass-sends should use a marketing platform, not Outlook directly.

Why is the BCC field missing in New Outlook for Windows?

The BCC field is hidden by default in New Outlook (and the web version). It's not missing — you just need to enable it. Click Options in the compose toolbar and select Bcc, or enable Show Bcc permanently in Settings → Mail → Compose and reply.

Can I BCC in Outlook mobile (iOS/Android)?

Yes. Tap the down-arrow (▾) next to the From field in the compose screen — this expands To, CC, and BCC. Add recipients in the BCC row. Some Outlook mobile versions have a Show Bcc by default setting under Settings → Compose or Settings → Email.

Is BCC GDPR-compliant for mass emails to customers?

Using BCC to hide recipients from each other when sending to multiple customers is the bare minimum for GDPR — it prevents unauthorized disclosure of recipient email addresses. But GDPR also requires consent for marketing, a legitimate basis for the contact, and clear unsubscribe options. Use a proper email marketing platform (with consent management and unsubscribe links) for any mass commercial sends — BCC alone isn't a full compliance solution.

Bottom line

BCC in Outlook is straightforward once you know where Microsoft hid it in each version. For one-off privacy-safe emails, the Options → Bcc path works on every Outlook version. For frequent BCC use, enable it permanently in settings. For team email visibility — don't use BCC as a workaround; use a shared inbox tool built for it.

If you found this guide useful and your team is wrestling with email visibility across many inboxes, Triageflow replaces BCC-as-team-visibility with a proper shared inbox + AI-drafted replies.