By Jewel Rana · Published November 14, 2026
Someone says they sent you an email, but it isn't in your inbox. Or nothing has arrived all day. Most of the time, the email did arrive and is sitting somewhere you didn't look, or a setting is quietly moving it. Work through these fixes in order. The first few solve most cases.
If only one-time verification codes or sign-up confirmations are missing, see our dedicated guide: verification email not arriving? 11 fixes.
1. Search everywhere, not just the inbox
Use the search bar and type the sender's address or a word you expect in the subject.
- Gmail: search covers most folders. Also open All Mail, and check Spam and Trash, which normal search can skip.
- Outlook: set the search scope to All folders, then check Junk Email and Deleted Items.
2. Check the other inbox tabs
Gmail sorts mail into Primary, Promotions, Social and Updates tabs. Outlook splits it into Focused and Other. Order confirmations and newsletters often land outside the main tab. If you find the email there, drag it to your main tab. Your provider will usually remember for next time.
3. Look in Spam or Junk, and mark it as "not spam"
Filters sometimes catch legitimate mail, especially from new senders. If you find the email there, mark it as Not spam (Gmail) or Not junk (Outlook). Adding the sender to your contacts helps future messages get through.
4. Check your filters and rules
An old filter can archive, delete or forward mail without you noticing.
- Gmail: Settings → See all settings → Filters and Blocked Addresses.
- Outlook: Settings → Mail → Rules.
Look for any filter that matches the sender, a word in the subject, or "has attachment". Delete or edit it.
5. Make sure you haven't blocked the sender
Gmail lists blocked senders on the same Filters and Blocked Addresses page. In Outlook, go to Settings → Mail → Junk email and check Blocked senders and domains. Remove the sender if they're there.
6. Check your storage
When your mailbox is full, new mail bounces back to the sender. A free Google account has 15 GB shared between Gmail, Google Drive and Google Photos, so a full Photos backup can stop your email. Outlook.com has its own mailbox limit. Empty Trash and Spam, and delete large old attachments to free space.
7. Check forwarding and POP/IMAP settings
If forwarding is on and set to delete or archive Gmail's copy, mail can seem to vanish. In Gmail, look under Settings → Forwarding and POP/IMAP. In Outlook, look under Settings → Mail → Forwarding. Also check that no other mail app is set to download and delete messages from the server.
8. Confirm the address the sender used
A single wrong letter, a missing dot in a company address or an old address in someone's contacts is enough. Ask the sender to copy the exact address they used. If they got a bounce message, ask them to forward it. The error code in it usually explains the problem.
9. Rule out a sync or app problem
If mail shows up on the website but not in your phone or desktop app, the app isn't syncing.
- Pull down to refresh, or close and reopen the app.
- Check that the app has permission to run in the background and use mobile data.
- Remove the account from the app and add it again.
10. Wait, then ask the sender to resend
Most email arrives within seconds, but some servers delay messages for a few minutes, especially from new senders, a practice called greylisting. If an hour has passed, ask the sender to send it again. They could also try from a different address or without large attachments, which can be rejected for being too big.
Still nothing? Test with a temporary inbox
To find out whether the problem is on your side or the sender's, ask them to send the same email to a free temporary address. If it arrives there within a minute, the sender's system works and the issue is with your mailbox settings or filters. If it doesn't arrive anywhere, the problem is on the sending side.
Once your mail is flowing again, it's worth cutting down the junk competing for your attention. See how to stop spam emails in Gmail and Outlook.
Frequently asked questions
Why am I suddenly not receiving any emails?
The most common causes of a sudden stop are a full mailbox, especially full Google storage, a new forwarding rule, or a phone app that stopped syncing. Check storage and settings first, then sign in through the website to see if mail is arriving there.
Why do emails from one person never reach me?
Usually a filter, a block or the spam folder is catching that sender. It can also be a typo in the address they saved, or a problem with their email server's authentication. That last one can make your provider reject their mail.
Can emails just disappear?
Very rarely. Email that seems to disappear has almost always been moved by a filter, a forwarding rule, another app, or the spam filter. Searching All Mail in Gmail or All folders in Outlook usually finds it.
