• I didn't get an email someone sent me
• I'm not getting emails from a listserv or a mailing list
• I'm not getting messages from a certain user or a certain domain
• I'm not getting new email
• Sender received notice that my account doesn't exist

There can be a few reasons that you might not receive an email that was sent to you. First, please make sure that the sender is able to send mail to other people, and that she has sent the email to the correct address. One mistyped letter in an email address can cause an email to be sent to the wrong person. Ensure, also, that your contact is sending to the correct email domain; Yahoo! Mail addresses can end in @yahoo.com, @ymail.com, @yahoo.co.uk, depending on how you set up the address.

To verify your full email address -- including its domain -- follow these steps:

1. Sign in to Yahoo! Mail.
2. Click the Options menu in the upper-left corner, and select Mail Options (this is in the upper right for Mail Classic users).
3. From the list on the left, click Mail Accounts (or Accounts for Classic users).
4. Click Yahoo! Mail in the center column.
5. Next to "Email address," the email address for your account displays.

If you still don't receive the email, there are a number of other things that might have happened:

• The email was not addressed properly.

The sender might not have your correct email address. Or, sometimes people make typos in email addresses, but the incorrect address just turns out to be someone else's correct email address. If this happened, the email intended for you could have been received by someone else.

If you're an international Yahoo! Mail user, the sender might have used the standard .com domain suffix instead of your address with the appropriate country suffix such as "@yahoo.ca" or "@yahoo.co.uk" or "@yahoo.fr".

• The email was delayed.

Most emails are delivered within a few minutes, but emails can sometimes be delayed while in transit due to problems on the sender's mail server, heavy Internet traffic, or routing problems. (On rare occasions, delays can last for several hours or more.)

• The sender's address is blocked.
  
  The Blocked Addresses feature in Yahoo! Mail allows you to create a list of addresses that you don't want to receive mail from. Mail coming in from one of these senders will neither arrive nor bounce, but will simply be discarded. To check your blocked addresses list:
  • Click the Options menu in the upper-left corner, and select Mail Options (this is in the upper right for Mail Classic users).
  • Click Blocked Addresses on the left (Classic users, click Spam, then look for Block Addresses).
  • You'll see a list of any addresses you have blocked.

• You've enabled mail forwarding.
  
  Check to see if you set your mail to be forwarded to another email address. To do this:
  • Click the Options menu in the upper-left corner, and select Mail Options (this is in the upper right for Mail Classic users).
  • Click POP & Forwarding.
  • If there's a dot in the box beside "Forwarding," you're forwarding emails to a different address. Click to remove the dot.

• You've set up filters.
  
  You might have set up filters which caused the email to be sent to the Trash folder or to another folder within your Yahoo! Mail account. To check:
  • Click the Options menu in the upper-left corner, and select Mail Options (this is in the upper right for Mail Classic users).
  • Click Filters. If there are filters listed ensure they're not set to prevent receiving emails from this sender.
  • Note: Mail in your Trash folder can be deleted at any time. Check your filters to ensure that all your mail isn't going straight to the trash folder.

• The email went to your Spam folder.
  
  It is important to check your Spam folder for the messages. Also, it is important to check the Spam folder settings to ensure messages within this folder are not being deleted immediately. If your Spam folder is set to delete messages immediately, we recommend changing it to a different setting. To check your Spam folder settings:
  • Click the Options menu in the upper-left corner, and select Mail Options (this is in the upper right for Mail Classic users).
  • Choose the option for your version of Mail:
    - The newest version of Yahoo! Mail: Click General in the left column, then go to the "Spam Protection" section at the right.
    - Mail Classic: Click Spam in the left column, then go to the "SpamGuard" section at the right.
  • From the "Empty Spam folder" menu, select Once a week, Every two weeks, or Once a month.
  • Click Save (or Save Changes in Mail Classic).

• Other possibilities.

Occasionally, interruptions or disruptions in email transmissions over the Internet will render an email undeliverable. While this is very rare, it does happen. Unfortunately, aside from waiting, there's no way to know whether an email has been delayed or whether it has been rendered undeliverable. If a sender can re-send it, have them do that.

No matter what the cause, the best solution is to ask the sender to re-send the email. Also, check your mail again to see if you've received their email. It is also helpful to add the sender's email address to your contacts list, so they are recognized as legitimate senders and not spam.