Mac Mail Contacts in 2026: Add, Sync and Fix Autocomplete

Mail on a Mac has no address book of its own. It reads the Contacts app, plus a hidden list of everyone you've written to called Previous Recipients. To save a sender, choose Message → Add Sender to Contacts. To get Gmail or iCloud contacts into Mail, turn on Contacts for that account. To stop a wrong address autofilling, remove it from Window → Previous Recipients.

It's a small thing until it isn't. A name autocompletes to an address someone stopped using two years ago, or a client's details sit in Gmail but never show up on the Mac. Below: how Mail and Contacts share addresses, how to add people from an email, how to sync contacts from each account, how to email a whole list at once, and how to fix suggestions that keep going wrong.

How Mac Mail and the Contacts app share addresses

Apple Mail suggests addresses from two places: the cards in the Contacts app and its own Previous Recipients list. Apple's guide says Mail keeps a list of previous recipients and uses it to suggest or complete addresses when you write an email. Someone can sit in that list for years without ever having a card in Contacts.

The Contacts app, in turn, holds the cards from every account you've turned Contacts on for: iCloud, Google, Exchange, Yahoo and others. Apple's Contacts guide describes these as internet accounts, and you don't need one at all; cards you create stay on the Mac if you have none.

That split explains most of the oddities people run into. A bad suggestion that survives a Contacts cleanup usually lives in Previous Recipients, and one that survives a Previous Recipients cleanup usually lives on a card.

How to add an email sender to Contacts in Mac Mail

The quickest way to save a sender from Mail is Message → Add Sender to Contacts with the email selected. Apple's guide to using Mail info in other apps gives three ways in:

1. From the menu: select the email in the message list, then choose Message → Add Sender to Contacts.
2. From any name in the email: move the pointer over a name in the From, To or Cc line, click the small arrow that appears, and choose Add to Contacts. This works for anyone on the email, not only the sender.
3. From a Siri suggestion: when Mail spots contact details in a message, such as a new phone number in a signature, a banner can appear above the email. Click Add to review the details before they go into Contacts, or close the banner to ignore it.

The new card goes to your default contacts account if you have more than one (more on that below). It usually holds just a name and an address, so it's worth opening it straight away. When I save someone from an email signature, I copy the phone number and company onto the card in the same sitting, because I never come back to do it later.

How to add Previous Recipients to Contacts

Previous Recipients is Mail's record of every address you've sent to, and you can turn any entry into a contact card from one window, following Apple's Previous Recipients page:

1. In Mail, choose Window → Previous Recipients.
2. Search for the address, or click a column header to sort the list.
3. Look at the card icon in front of each entry: an icon means a card already exists. Double-click it to open that card.
4. For an address with no card, select it and click Add to Contacts.

One detail matters if you use more than one Apple device: when you're signed in to the same Apple Account and Contacts is turned on in iCloud, Apple says the Previous Recipients list is available on your other Macs, iPhone and iPad too.

How to sync Gmail, iCloud and Outlook contacts into Mac Mail

Mail can only suggest contacts that the Contacts app can see, so syncing happens in Contacts, not in Mail. Each account has its own Contacts switch, separate from its Mail switch.

Turn on contacts for an account that's already on your Mac

If you added Gmail or Outlook to Mail and its contacts never appeared, the Contacts switch for that account is probably off. Apple's steps:

1. Open the Contacts app.
2. Choose Contacts → Accounts. This opens Internet Accounts in System Settings.
3. Select the account, such as Google or Microsoft Exchange, and turn on Contacts.

To add an account Contacts doesn't know yet, choose Contacts → Add Account, pick the type (or Other Contacts Account if yours isn't listed), sign in, and make sure Contacts is turned on for it.

Turn on iCloud Contacts

iCloud Contacts keeps the same cards on your Mac, iPhone and iPad. Apple's iCloud guide gives the steps on a Mac running macOS 15 or later:

1. Choose Apple menu → System Settings, then click your name at the top of the sidebar.
2. Click iCloud.
3. Next to Saved to iCloud, click See All, then turn on Contacts.

On iPhone, it's Settings → [your name] → iCloud → See All → Contacts. Use the same Apple Account on every device, or the cards won't meet.

Pick where new contacts are saved

With two or more accounts, every new card, including ones made with Add Sender to Contacts, goes to a default account. Set it in Contacts → Settings → General → Default Account; Apple notes the menu only appears when you have more than one account. I keep mine on iCloud so a person I save on the Mac is on my phone a minute later, and my work Google account doesn't fill up with personal cards.

How to email a contact list from Mac Mail

To email a group of people in one go, make a list in Contacts and type the list's name in Mail's To field. Contacts calls these "lists" now; older versions of macOS called them groups. Apple's list guide covers the setup:

1. In Contacts, click the Add button (+) at the top of the window and choose New List. Or select some contacts first and choose File → New List From Selection.
2. Name the list, then drag contacts onto it in the sidebar.
3. In Mail, start a new email and type the list name in To, Cc or Bcc.

Starting in Contacts works too: Control-click the list in the sidebar and choose Send Email, and a new message opens in Mail addressed to the list, as Apple describes.

Two settings shape what happens next. In Mail → Settings → Composing, When sending to a group, show all member addresses decides whether the To line shows every address or only the list name (Apple's Composing settings). To drop a few people for one email, click the arrow beside the list name and choose Expand Group (Apple's sending guide), then delete them. And if a member has several addresses, Edit → Edit Distribution List in Contacts lets you choose which one the list uses (Apple's distribution list page).

The first time I emailed a project team from my Mac, I put the list in To and every member saw everyone else's address. Now a list of strangers to one another goes in Bcc. The Cc and Bcc explainer covers when that matters.

A list in Contacts on the Mac is separate from a contact label in Gmail. If you mostly send from Gmail on the web, a Gmail contact label may be the better home for it.

Why does Mac Mail keep suggesting the wrong email address?

A wrong address keeps autofilling because it's stored in Previous Recipients, on a contact card, or both, and you have to clear every copy. Start with the quickest fix and move down:

1. Remove it while you type. In the To field, hover over the suggested address, click its arrow, and choose the option to remove it from Previous Recipients. Apple's page confirms you can remove a recipient this way while addressing a message.
2. Clear it from the full list. Choose Window → Previous Recipients, search for the old address, select it and click Remove From List.
3. Search Contacts for the address, not the name. Macworld's advice is to search for the address itself, because a stale or duplicate card can still hold it. Delete the old address from the card.
4. Merge duplicates. In Contacts, choose Card → Look for Duplicates and click Merge, or select the cards yourself and choose Card → Merge Selected Cards. Apple says merging keeps all the unique information on one card, so check the merged card for the old address afterward.

When a colleague changed jobs, their old work address kept turning up in my To line. Removing it from Previous Recipients didn't stick until I searched Contacts for that address and found it on a second card, synced from my work account. Old duplicates are common when two accounts both hold the same person; Apple's own example is one card from Yahoo and one from Google.

One caution: Previous Recipients is built from what you send, so replying to someone who still writes from the old address puts it straight back on the list.

Settings that stop you emailing the wrong person

Mail has two settings worth a minute of your time if you send anything sensitive. Both are in Mail → Settings.

• Composing → Mark addresses not ending with: enter your company's domain, and Mail shows any other address in red (Apple's Composing settings). On my work Mac this is set to the company domain, so an outside address in a reply to an internal thread stands out before I send.
• Viewing → Use Smart Addresses: shows names instead of email addresses for people in Contacts or Previous Recipients (Apple's Viewing settings). It's tidier, but it hides which address a name points to. If you have two cards with the same name, turn it off so you can see the address you're about to use.

For the rest of Mail's settings, our Apple Mail guide walks through the ones that matter.

How to back up or move your Mac contacts

Exporting a vCard is the simplest way to back up contacts or move them to another app. Apple's export steps:

1. In Contacts, select the cards you want, or a list in the sidebar and then its cards.
2. Choose File → Export → Export vCard.
3. Pick a location and click Save. You get a single .vcf file.

To leave notes or photos out of the file, open Contacts → Settings → vCard and turn those options off first. Before I merge duplicates or remove an account, I export everything to a vCard, so I have a copy of every card as it was if a merge goes wrong.

A quick checklist for clean contacts in Mail

• Contacts is turned on for every account whose people you email.
• One default account is set, so new cards land in a predictable place.
• Duplicates are merged every few months with Card → Look for Duplicates.
• Old addresses are removed from both the card and Window → Previous Recipients.
• Lists exist for the groups you email often, and go in Bcc when members are strangers to one another.
• A recent vCard export sits somewhere safe.