Email Not Arriving? Check Webmail Before Changing Your Mail App

1. Establish whether the message reached the mailbox

Open the provider’s official website using a known address or bookmark. Verify that you are in the right account, particularly if you have personal, business, and older addresses. A mail app can display several inboxes and make it easy to check the wrong one.

Search for the sender’s address and a distinctive subject word. Include Spam or Junk, Trash or Deleted Items, Archive, and other folders. In Gmail, search options can include Mail & Spam & Trash. Finding a message outside the Inbox is a sorting problem, not a failure to deliver it.

1. Look for a conversation thread that may contain the new reply.
2. Check date filters and inbox categories that might conceal the message.
3. If you find legitimate mail in Spam, use the provider’s Not spam action rather than simply deleting it.

2. Compare one sender with all senders

Ask a trusted contact to send a short test message with no attachment. If that arrives, the mailbox is receiving some mail. The original sender may have the wrong address, a sending failure, a delayed message, or an attachment the service rejected.

Ask the original sender to confirm the full destination address and check their Sent folder and any bounce message. A display name alone is insufficient. Do not ask them to send passwords or confidential attachments while troubleshooting.

1. If they received a delivery failure, request the error text with private information removed.
2. For a verification email, check the address on the service and request a fresh code only after checking Spam. Many repeated requests can leave several expired codes in circulation.

3. Review storage and automatic handling

A full account can prevent new mail from arriving. Check the provider’s account-storage indicator. Gmail storage is shared with other Google services, so a mailbox that looks small may still have no remaining capacity.

Review inbox rules, filters, blocked senders, and forwarding. An old rule might archive an entire sender’s messages or send them to another folder. Change one relevant rule at a time and keep a record of its previous setting. Do not delete every rule without understanding its purpose.

If unfamiliar forwarding or filters appear and you did not authorize them, treat that as a possible account-security issue. Change your password through the official service and review account activity rather than simply deleting the rule.

4. If webmail works but the app does not

The server has the message, so focus on the app. Check its connection status, account sign-in prompts, sync settings, and whether it is in an offline mode. Refresh or sync manually, then restart the app after saving drafts.

Update the app through its official channel. If a password changed recently, follow the provider’s supported sign-in process. Do not turn on less secure authentication or enter credentials into a third-party repair website just to make an old client connect.

1. Compare another folder in the app to see whether all synchronization stopped.
2. Keep a copy of local-only items before any account removal or reconfiguration.
3. Use webmail temporarily while the client problem is investigated.

When support or a domain administrator is needed

If every incoming test fails despite available storage and no obvious rules, check the provider’s official service status and support channel. Include the approximate sending time, sender domain, recipient address, and error text.

For mail at your own domain, an administrator may need to check MX records and forwarding-service status. Do not replace DNS records on a guess: the wrong MX settings can disrupt all incoming mail for that domain. A mail-app reinstall cannot repair a server-side routing problem.