The fastest way depends on your email provider

Gmail, Outlook, and Apple Mail all let you send one message to multiple people at once, but the steps differ slightly between them. Gmail uses a "To" field where you type or paste addresses separated by commas. Outlook and Apple Mail work the same way. The real difference is whether you want everyone to see each other's addresses — which happens by default — or keep the list hidden, which requires using the "Bcc" (blind carbon copy) field instead.

If you send to the same group of people regularly, all three services let you save that group so you only type the group name next time instead of listing everyone individually. This saves time and reduces the chance of leaving someone out by accident.

Key Takeaways

  • In Gmail, Outlook, and Apple Mail, you can type multiple email addresses in the "To" field separated by commas, or paste a list of addresses all at once.
  • Using "Bcc" instead of "To" hides the recipient list from everyone on the email, which is useful when sending to strangers or large groups.
  • All three services let you create a saved contact group so you can send to the same set of people by typing one group name instead of listing addresses each time.
  • When you create a group in Gmail or Outlook, you can add or remove people from it later without changing the group name.

Sending to multiple people in Gmail

Open a new email and click in the "To" field. Type the first person's email address, then type a comma and a space, then the next address. Keep going until you have entered everyone. You can also paste a list of addresses separated by commas directly into the "To" field, and Gmail will recognize each one as a separate recipient.

As you type, Gmail shows you matching contacts from your address book. Click on a name to add it without typing the full address. When you are done adding people, write your subject and message as usual, then click "Send".

If you want to hide the recipient list so people cannot see who else received the email, click "Bcc" instead of "To" at the top of the compose window. Type addresses into the Bcc field the same way — separated by commas or pasted as a list. Everyone will receive the email, but no one will see the other recipients' addresses.

Sending to multiple people in Outlook

Open a new email message and click in the "To" field. Type the first address, then a semicolon and a space, then the next address. Outlook uses semicolons instead of commas to separate addresses. As you type, Outlook shows matching contacts — click on a name to add it.

You can also paste a list of addresses separated by semicolons directly into the "To" field. If your list uses commas instead, Outlook usually converts them automatically, but pasting semicolons is more reliable.

To hide the recipient list, click the "Bcc" button in the ribbon at the top of the compose window. A new "Bcc" field appears below the "To" field. Type addresses into it the same way you would in the "To" field.

Sending to multiple people in Apple Mail

Open a new message and click in the "To" field. Type the first email address, then a comma and a space, then the next address. Apple Mail recognizes each address as a separate recipient. You can also paste a comma-separated list of addresses directly into the field.

As you type, Apple Mail shows matching contacts from your address book. Click on a contact to add it. When you have added everyone, write your subject and message, then click "Send".

To hide the recipient list, click in the "Bcc" field instead of the "To" field. If you do not see a "Bcc" field, click the "Bcc" button in the toolbar at the top of the message window. Type addresses into the Bcc field the same way — separated by commas.

Creating a saved group in Gmail

Go to Google Contacts in a web browser and click "Create a contact" or the plus icon. Select "Create a label" from the dropdown menu. Type a name for your group — for example, "Team Leads" or "Monthly Newsletter".

Click "Add contact" and search for each person you want in the group. Click their name to add them. When you have added everyone, click "Save". The group now appears in your contacts list.

To send an email to the group, open a new message in Gmail and type the group name in the "To" field. Gmail shows the group name as an option — click it to add everyone at once. You can edit the group later by going back to Google Contacts, clicking the group name, and adding or removing people.

Creating a saved group in Outlook

Open Outlook and click "People" or "Contacts" at the bottom of the left sidebar. Click "New Contact Group" or the plus icon. Type a name for your group.

Click "Add Members" and search for each person you want to include. Click their name to add them to the group. When you have added everyone, click "Save".

To send an email to the group, open a new message and type the group name in the "To" field. Outlook shows the group as an option — click it to add all members at once. To change the group later, go back to Contacts, click the group name, and click "Edit" to add or remove people.

Creating a saved group in Apple Mail

Open Contacts on your Mac and click the plus icon at the bottom left. Select "New Group" from the dropdown. Type a name for your group.

Drag contacts from your address book onto the group name in the left sidebar, or click the group, then click the plus icon and search for each person you want to add. When you have added everyone, close the window — the group saves automatically.

To send an email to the group, open a new message in Apple Mail and type the group name in the "To" field. Apple Mail shows the group as an option — click it to add all members. To edit the group later, go back to Contacts, click the group name, and drag contacts in or out.

When to use Bcc instead of To

Use the "To" field when everyone on the email knows each other and it is normal for them to see who else received the message — like a team email or a message to your department. Use "Bcc" when you are sending to people who do not know each other or should not see each other's email addresses — like a newsletter to customers, a message to multiple job candidates, or an email to a group of friends who do not all know each other.

Bcc also protects privacy. If one person's email account is hacked, the hacker sees only that person's copy of the message, not the full recipient list. When you use "To" or "Cc", everyone can see everyone else's address, which means a breach of one account exposes all the addresses to the hacker.

Frequently Asked Questions

What is the difference between To, Cc, and Bcc?

"To" is for the main recipients — everyone sees who else is in the "To" field. "Cc" (carbon copy) is for people who should receive the email but are not the primary recipient — everyone still sees the full list. "Bcc" hides the recipient list from everyone. Use "To" for people who expect to see each other, "Cc" when you want transparency but someone is not the main recipient, and "Bcc" when you want to hide the list.

Can I send to more than 100 people at once?

Yes, all three services handle large groups. Gmail, Outlook, and Apple Mail have no hard limit on the number of recipients in a single message. However, some email providers block messages sent to very large lists to prevent spam. If you regularly send to hundreds of people, consider using a mailing list service or newsletter tool instead of your regular email account.

What happens if I type an address wrong?

If the address is slightly wrong, the email bounces back to you with a delivery failure message. If the address is close to a real one, the email might go to the wrong person. Always double-check addresses before sending, especially when pasting a list. Most email services show you the recipient list one more time before you click "Send".

Can I add someone to a group after I create it?

Yes. In Gmail, Outlook, and Apple Mail, you can edit a group after you create it by going back to your contacts, clicking the group name, and adding or removing people. The group name stays the same, so any emails you send to that group name in the future will go to the updated list.

Is there a way to send the same email to people one at a time instead of all at once?

Yes, but you have to do it manually — none of the three services have a built-in "send individually" option in the compose window. If you need to send the same message to many people but want each person to receive it separately (so they do not see the other recipients), use Bcc and send one message. Everyone receives it at the same time, but the recipient list stays hidden.