Apple Mail Not Syncing with Gmail

apple mail not syncing with gmail is usually a sign-in, IMAP, or connection problem; refresh settings, then remove and add the account.

When Gmail stops updating in Apple Mail, it feels like your inbox froze. New messages don’t land, sent mail hangs, or folders look incomplete. Most of the time, the cause is simple: a login token expired, IMAP is off, labels are hidden from IMAP, or the device’s mail refresh got stuck.

This walkthrough sticks to fixes that are safe for everyday users. You’ll start with quick checks, then check Gmail settings, then reset Apple Mail in a way that preserves mail stored on Gmail’s servers.

If sync fails on one device but works on another, that’s a strong hint Gmail is fine and the local Mail setup needs a reset in the order below.

What “Not Syncing” Looks Like In Real Life

Sync problems show up in a few repeat patterns. Matching what you see to a likely cause keeps you from doing extra work.

What You Notice	Likely Cause	Best First Fix
New mail arrives late on iPhone	Fetch schedule or low power limits	Set Fetch to 15 minutes
Mail says it can’t get messages	Sign-in token expired or blocked	Sign in again
Folders missing or empty	IMAP labels hidden	Turn on “Show in IMAP”
Sent mail stuck in Outbox	SMTP or account mapping issue	Remove and add account

Quick Checks That Fix A Lot Of Cases

Run these checks first. They confirm whether Gmail is healthy on the server and whether Apple Mail is failing on the device.

Confirm Gmail works in a browser — Sign in at gmail.com and check new mail arrives and sending works.
Switch networks once — Try Wi-Fi, then cellular data, then open Mail again.
Refresh the inbox — In Mail, pull down until the spinner stops, then wait a few seconds.
Check Low Power Mode — Low Power Mode can slow background mail refresh.
Open Outbox — If sending fails, open Outbox and read the error line tied to the stuck message.

If Gmail is missing messages in the browser, fix that first. If Gmail looks correct in the browser but Apple Mail looks stale, move on to sign-in and IMAP checks.

Apple Mail Not Syncing with Gmail After An Update

Right after an iOS, iPadOS, or macOS update, Mail can lose permission to access Gmail or keep an old security token. A clean sign-in refresh often clears it.

Re-authenticate Your Gmail Login

Mail may keep showing old mail while the account looks “online.” A sign-in refresh replaces the token that Mail uses to connect to Gmail.

Open Mail account settings — On iPhone or iPad, go to Settings, open Apps, tap Mail, then tap Mail Accounts. On Mac, open Mail, then open Settings and go to Accounts.
Complete Google sign-in — If prompted, sign in and allow Mail access.
Refresh Mail — Return to Mail and pull to refresh in the inbox.

Clear Google Security Blocks

Google can block access after repeated failed logins or when it spots a new device. When that happens, Mail may retry in the background without a clear alert.

Check recent sign-ins — Open your Google account in a browser and review recent security activity.
Approve alerts — If Google asks you to confirm it’s you, approve it.
Try Mail again — Reopen Mail and refresh the inbox.

Set Fetch So iPhone And iPad Actually Check Mail

On iPhone and iPad, Gmail in Apple Mail commonly uses Fetch, not Push. If Fetch is set to Manual, Mail only updates when you open it and refresh.

Open Fetch New Data — Go to Settings, open Apps, tap Mail, then tap Mail Accounts and Fetch New Data.
Set Gmail to Fetch — Tap the Gmail account and choose Fetch.
Pick a schedule — Choose 15 Minutes, 30 Minutes, or 1 Hour based on your preference.

Gmail IMAP And Label Settings That Control Sync

Apple Mail reads Gmail using IMAP. If IMAP is off, or if labels are hidden from IMAP, Mail can’t pull full folder lists or keep them current.

Enable IMAP In Gmail

IMAP settings are easiest to change from a desktop browser view. In Gmail settings, you’ll find IMAP under Forwarding and POP/IMAP.

Open Gmail settings — Sign in to Gmail, click the gear icon, then click See all settings.
Turn IMAP on — Open Forwarding and POP/IMAP, select Enable IMAP, then save changes.
Refresh Apple Mail — Open Mail and refresh the inbox.

Show The Labels You Want Apple Mail To Sync

Gmail labels act like folders. Mail only sees labels that Gmail exposes to IMAP. If a label is hidden, it won’t appear or update in Apple Mail.

Open Gmail Labels — In Gmail settings, open the Labels tab.
Turn on “Show in IMAP” — Enable it for labels you want visible in Apple Mail.
Review All Mail — If you rely on All Mail in Apple Mail, set All Mail to show in IMAP.

Remove IMAP Folder Size Limits If Mail Stops At A Cutoff

Gmail can limit how many messages an IMAP client sees per folder. If Apple Mail only shows part of a mailbox and refuses to pull the rest, remove the limit and let Mail refresh.

Find the folder limit setting — In Forwarding and POP/IMAP, locate the IMAP folder size option.
Choose no limit — Select the option that does not limit messages in an IMAP folder, then save changes.
Force a clean refresh — On Mac, rebuild the mailbox. On iPhone, remove and add the account.

Match Gmail System Labels To Mailbox Behavior

Gmail treats Archive as “remove the Inbox label,” not “move to a folder.” Apple Mail needs to map actions like Delete, Archive, Sent, and Drafts to Gmail’s system labels. If those mappings drift, you can see duplicates, missing sent mail, or deletes that bounce back after a refresh.

On iPhone and iPad, you can review mailbox mapping inside the Gmail account settings. On Mac, the mappings live in Mail settings for the account. Start with the basics first, then test one message end to end.

Check Trash mapping — Set deleted messages to go to Gmail Trash if you want true deletes, not archive.
Check Sent mapping — Make sure sent messages land in Gmail Sent Mail, not All Mail plus Inbox.
Check Drafts mapping — If drafts vanish or duplicate, map drafts to Gmail Drafts and try saving one draft.
Run a small test — Send a message to yourself, archive it, delete it, then check Gmail in a browser to confirm each change.

Fix Apple Mail Sync On iPhone And iPad

If Gmail settings check out, the device may be stuck with stale cache or a broken account session. These fixes reset the local connection without deleting your Gmail mailbox.

Toggle Mail For The Gmail Account

This resets the Mail layer for the account and is worth trying before you delete anything.

Open Mail Accounts — Go to Settings, open Apps, tap Mail, then tap Mail Accounts.
Select Gmail — Tap your Gmail account.
Turn Mail off, then on — Switch Mail off, wait ten seconds, then switch it back on.

Remove And Add Gmail Using The Google Option

If the toggle doesn’t change anything, re-adding the account is the most consistent fix. It wipes the local mail cache for that account and pulls fresh folder lists and permissions.

Check mail exists on Gmail — Sign in to Gmail in a browser and confirm your messages are there.
Delete the account from the device — In Mail Accounts, open Gmail and delete it from the device.
Add it back — Add Account, choose Google, sign in, then allow Mail access.
Let Mail finish the first sync — Leave Mail open for a few minutes so headers and folders can load.

Reset Network Settings If Mail Drops Offline

If Mail only syncs on one network, or keeps failing with connection errors, a network reset can clear saved Wi-Fi, VPN, and DNS settings that interfere with mail traffic.

Save Wi-Fi passwords — You’ll need them again after the reset.
Reset network settings — In Settings, open General, tap Transfer or Reset, then reset network settings.
Re-test Mail — Join Wi-Fi, open Mail, and refresh.

Fix Gmail Sync In Apple Mail On Mac

Mac Mail includes tools that show what’s happening under the hood. If Gmail stops updating, force a sync, check connection status, then rebuild the mailbox index.

Synchronize All Accounts

Mac Mail can get stuck where Gmail won’t update on its own. A full sync request can kick it back into action.

Run a full sync — In Mail, open Mailbox and choose Synchronize All Accounts.
Check Activity — Open Window, then Activity, and watch Gmail fetch.

Use Connection Doctor To Spot Login Or Server Errors

If IMAP connects but SMTP fails, sending breaks. If IMAP fails, folders and new mail stop updating. Connection Doctor shows both in one view.

Open Connection Doctor — In Mail, open Window and select Connection Doctor.
Look for red status — Red indicators point to a login, server, or network issue tied to Gmail.
Retry with fresh sign-in — If prompted, sign in again and retry the connection test.

Rebuild The Gmail Mailbox

Rebuilding clears a corrupted local index and re-downloads mailbox data. It helps when counts are wrong, messages seem missing, or search results don’t match Gmail.

Select the mailbox — Click the Gmail mailbox that looks wrong.
Choose Rebuild — Open Mailbox and choose Rebuild.
Wait for the re-download — Progress shows in the Activity window.

Remove And Re-Add Gmail On Mac

If rebuild doesn’t clear it, re-adding resets IMAP, SMTP, mailbox mappings, and the sign-in token in one sweep.

Remove Gmail from Mail — In Mail settings, open Accounts, select Gmail, then remove it.
Add it back — Add Account, choose Google, sign in, then allow Mail access.
Test server sync — Send a message, then check Gmail in a browser to confirm it appears in Sent Mail.

Keep Apple Mail And Gmail Stable Over Time

Once syncing is back, a few small settings keep it from slipping again. You don’t need to baby it, just keep the basics consistent.

Keep IMAP enabled — Apple Mail depends on IMAP for Gmail sync.
Show fewer labels in IMAP — Expose the labels you use and hide the rest to keep folder lists lighter.
Re-check permissions after password changes — After a Gmail password change, Mail may need a fresh sign-in.
Watch Fetch after updates — If iPhone Mail feels delayed, confirm Fetch did not drop back to Manual.

If apple mail not syncing with gmail returns after a clean re-add, test the Gmail app for a few days. If the Gmail app stays current while Apple Mail drifts, the cause is likely on the device side, not in your Google account.

When you switch back, keep IMAP on, keep label exposure tidy, then check Fetch. Those three checks prevent most repeat sync problems.