Fix Apple Mail Not Syncing With Gmail on iPhone

If your Apple Mail app on iPhone isn’t syncing with Gmail—new emails missing, sent messages stuck, or deletions not showing—the fix is usually a quick settings change, a re-authentication, or a forced refresh. Start by pulling down on the inbox to manually refresh, then check your Mail Fetch settings and Gmail’s app password if you use two-factor authentication. Below are the most effective solutions, from simplest to more advanced, with step-by-step instructions.

Why Apple Mail and Gmail Stop Syncing

Apple Mail on iPhone connects to Gmail through either IMAP (Internet Message Access Protocol) or Exchange ActiveSync (used for Gmail’s “push” feature). When sync breaks, it’s often because:

• Fetch vs. Push – Gmail push was removed from Apple Mail in 2013; your iPhone now “fetches” at set intervals (or manually). If you set it to “Manual,” new mail won’t appear until you open the app and refresh.
• Expired app password – If you have two-factor authentication enabled, Gmail requires a 16-character app password for third-party apps like Apple Mail. If that password was revoked or changed, sync stops.
• Server-side filters – Gmail’s labels, filters, or “All Mail” archive behavior can hide messages from the Inbox in Apple Mail.
• Network or date/time issues – A weak connection or incorrect date/time on your iPhone can prevent secure connections to Gmail’s servers.

Quick Fixes to Try First

Before diving into settings, try these simple actions—they resolve many sync issues instantly:

1. Force refresh – Open the Mail app, go to your Inbox, and pull down from the top of the screen until the spinner appears. Release to force a manual fetch.
2. Toggle Airplane Mode – Turn it on, wait 10 seconds, then off. This resets your network connection.
3. Restart the Mail app – Swipe up from the bottom (or double-click Home) to see app switcher, then swipe Mail away. Reopen it.
4. Check Gmail’s status – Visit the Google Workspace Status Dashboard to see if Gmail is having an outage. If it is, wait and try again later.
5. Restart your iPhone – A simple reboot clears temporary glitches in background processes.

Adjust Fetch and Push Settings

Because Gmail no longer supports push to Apple Mail, your iPhone fetches new mail at intervals you choose. If those intervals are too long or set to Manual, you’ll think sync is broken.

1. Go to Settings → Mail → Accounts → Fetch New Data.
2. Ensure Push is toggled on (though Gmail won’t use it, other accounts might).
3. Under Fetch, choose a schedule: Every 15 Minutes, Every 30 Minutes, Hourly, or Manual. For near-real-time, pick 15 minutes.
4. Scroll down to the Gmail account and tap it. Select Fetch (not Manual) to override the global setting for Gmail.

Note: More frequent fetching uses more battery. If you don’t need instant email, hourly is a good balance.

Re-authenticate Your Gmail Account

Sometimes the connection token expires or becomes corrupted. Removing and re-adding the account forces a fresh handshake with Google’s servers.

1. Go to Settings → Mail → Accounts.
2. Tap your Gmail account.
3. Tap Delete Account at the bottom. This removes it from Mail, Contacts, and Calendars (your Gmail data stays intact on Google’s servers).
4. Restart your iPhone.
5. Go back to Settings → Mail → Accounts → Add Account → Google.
6. Enter your Gmail address and password. If you have two-factor authentication, you’ll be prompted to enter a verification code.

After re-adding, open Mail and pull to refresh. Your messages should reappear.

Use an App Password If You Have Two-Factor Authentication

If you use two-factor authentication (2FA) on your Google account, your regular password won’t work in Apple Mail. You must generate a 16-character app password specifically for Mail.

1. Go to your Google Account → Security.
2. Under “Signing in to Google,” select App passwords (you may need to re-enter your password).
3. Choose Mail as the app and iPhone as the device (or “Other” and name it “Apple Mail”).
4. Google generates a 16-character code. Copy it.
5. On your iPhone, go to Settings → Mail → Accounts → tap your Gmail account → Account and replace the password with the app password.

If you don’t see “App passwords,” it may be because your Google Workspace administrator has disabled them, or you haven’t enabled 2FA. In that case, use your regular password or contact your admin.

Check Gmail’s Labels and Archive Behavior

Gmail uses labels, not folders. Apple Mail treats labels as folders, but there’s a quirk: when you archive a message in Gmail (or swipe to archive in Mail), it disappears from the Inbox label but remains in “All Mail.” If you’re missing messages, they might be archived, not lost.

• In Apple Mail, check the All Mail folder under your Gmail account. If the message is there, it’s archived.
• Make sure your Gmail Inbox isn’t using “Important” or “Priority Inbox” filters that skip the main Inbox. In Gmail’s web interface, click the gear icon → See all settings → Inbox and set “Inbox type” to Default.
• If you have a filter that automatically archives or labels incoming mail, it won’t appear in Apple Mail’s Inbox. Check Gmail’s filters and adjust them.

Reset Mail’s Background App Refresh and Network Settings

If the above fails, the issue may be with your iPhone’s background processes or network configuration.

1. Enable Background App Refresh – Go to Settings → General → Background App Refresh and ensure it’s on for Mail. Without it, Mail may not fetch in the background.
2. Reset Network Settings – Go to Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings. This clears saved Wi-Fi passwords and VPN settings, so be prepared to re-enter them. It often resolves connection issues with Gmail.
3. Delete and re-add the Gmail account (as above) after resetting network settings.

Frequently Asked Questions

Why does my Gmail stop syncing on iPhone after a few days?

This often happens when Google revokes an app password (if you changed your main password or security settings) or when the fetch interval is set to Manual. Re-authenticate the account and set fetch to every 15 minutes.

Can I get push notifications for Gmail in Apple Mail?

No. Since 2013, Gmail no longer supports push to Apple’s Mail app. The Gmail app itself uses push, so if you need instant notifications, use the Gmail app or set fetch to every 15 minutes.

Why are my sent emails not appearing in Gmail’s Sent folder?

This is usually a sync issue with the Sent folder. In Apple Mail, go to Settings → Mail → Accounts → tap your Gmail account → Account → Advanced and ensure “Sent Mailbox” is set to the Gmail Sent folder. Then force refresh.

Will deleting my Gmail account from iPhone delete my emails?

No. Deleting the account from your iPhone only removes the connection. Your emails remain on Gmail’s servers and will reappear when you re-add the account.

What if I use Gmail with a custom domain (Google Workspace)?

The same steps apply. However, your administrator may have disabled IMAP or app passwords. Check with your admin or try using the Gmail app if you can’t change those settings.

Why does Mail say “Cannot Get Mail” with Gmail?

This error usually means the username or password is incorrect, or the server is unreachable. Double-check your credentials, ensure you’re using an app password if 2FA is on, and verify your internet connection.

Related

• How to Disable Chkdsk at Windows Startup
• Restore WiFi and Secure Your Netgear Router After Reset
• Fix Error 0x80004005: Top Easy Ways That Work