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uk Technology & digital loss email not syncing • mail app connection error • inbox stopped updating • email stuck loading • repeated sign-in prompts • cannot send or receive email • mail server unreachable • outlook app not syncing • gmail app not syncing • iphone mail not receiving emails • android mail sync problem • imap sync error • exchange account connection error • email works on web not phone • new emails not arriving • email app keeps disconnecting • sudden email outage • mail sync keeps failing • email account authentication error

What to do if…
your email app suddenly stops syncing and shows repeated connection errors

Short answer

Check whether it’s a provider outage or a device/account issue by testing webmail (or another device) and the provider’s official status page. Then refresh sign-in safely before you remove or re-add anything.

Do not do these things

  • Don’t keep re-typing your password over and over if the app keeps rejecting it — you can trigger security locks or make the problem harder to undo.
  • Don’t delete the whole app (or wipe your phone) as a first move — you can lose settings, offline mail, or clues about what changed.
  • Don’t click “verify your account” links inside unexpected emails or pop-ups — phishing sometimes imitates “connection errors”.
  • Don’t change lots of settings at once — change one thing, then test, so you can reverse it.
  • Don’t assume you’ve been “hacked” just because syncing stopped — outages and expired sign-ins are common.

What to do now

  1. Check if the email service is down (2 minutes).

    • iCloud Mail: check Apple’s System Status.
    • Gmail/Google Workspace: check the Google Workspace Status Dashboard.
    • Outlook.com/Microsoft 365: check Microsoft’s public status page; if it’s a work/school account, your organisation may only show details in the Microsoft 365 admin “Service health” area (so your IT/help desk may need to confirm).
    • If there’s an outage: stop troubleshooting and use webmail (browser) if possible until it resolves.

  2. Confirm whether it’s your device/app or your account.

    • Try signing in via webmail (browser) or checking the same mailbox on another device.
    • If webmail works but the app doesn’t: it’s likely an app/device setting, cached auth token, or network/VPN issue.
    • If webmail also fails: it’s likely password, account lock, or provider-side issue.

  3. Do a quick “connection basics” reset (without deleting anything yet).

    • Toggle Airplane Mode on/off, then try again.
    • Switch networks (Wi-Fi ↔ mobile data).
    • Turn off VPN (or work filtering) temporarily and test again.
    • Restart the device.

  4. Check time/date and background restrictions (common silent causes).

    • Ensure automatic date & time is enabled.
    • On iPhone/iPad: check Mail account Fetch/Push settings and that the account is enabled.
    • On Android: ensure auto-sync is enabled for accounts, and the email app isn’t restricted by battery/data saver.

  5. Make sure you can sign in safely, then refresh the authentication.

    • If you use 2-step verification, you may need to complete a fresh sign-in prompt in the app.
    • If the account is work/school, you might need to re-approve device access or meet a new security requirement.
    • If you see unexpected “new sign-in” alerts or suspect a fake sign-in prompt: change your password from the provider’s official website/app and review account security activity.

  6. Use the app’s “reset/re-sync” option if it has one (least disruptive first).

    • Some apps include options like “refresh”, “re-sync”, “reset account”, or “clear sync state”. If you see one, use it and then test.

  7. If still broken: remove and re-add only the affected account (not the whole app).

    • Before removing: note any special setup (IMAP/Exchange server name, security settings) if you had to enter them manually.
    • Remove the account from the mail app/device, restart the device, then add it back using the official sign-in flow.

  8. If it’s a work account, stop and involve IT if any of these are true:

    • You’re asked to install a “profile”, “device management”, or new security app you weren’t expecting.
    • You see repeated credential prompts but webmail works.
    • This started right after a workplace security/policy change.

  9. If you think this started after a suspicious message or login prompt: treat it as potential phishing.

    • Don’t interact with the suspicious message further.
    • Forward suspicious emails to the UK Suspicious Email Reporting Service: report@phishing.gov.uk, then delete them.
    • If you entered credentials anywhere unusual, change passwords immediately and review sign-in activity.

What can wait

  • You do not need to decide today whether to switch email apps or migrate providers.
  • You don’t need to “clean up” old emails or reorganise folders to fix syncing.
  • You don’t need to deep-diagnose server settings unless you have a manual IMAP/SMTP setup and the basic steps above fail.

Important reassurance

This is a common failure mode and is often caused by an outage, an expired sign-in token, a VPN/network change, or a background/battery setting — not something you “broke”. Small, reversible steps first are the safest way to get mail back.

Scope note

This guide covers first steps to restore syncing and avoid irreversible mistakes. If this is a managed work/school account or you suspect account compromise, follow your organisation’s security process and get specialist help.

Important note

This is general information, not professional IT or security advice. If you’re dealing with a work-managed device/account, follow your organisation’s policies. If you suspect fraud or account takeover, prioritise account security and reporting over troubleshooting.

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