OS X Mavericks: New mails are not received

Since the update to Mavericks, it has happened that OS X cannot receive some mails. A restart of the mail app usually helps. You can find out how to receive new mails without restarting here.

Mails are not received under Mavericks - the solution

Apple has not yet found a correct solution to the problem with the incorrect behavior of the mail program. However, there is a little trick. You can use it to receive emails without restarting:

1. Select "Mailbox" -> "Take all accounts offline" in the menu bar.
2. Then click on "Mailbox" -> "Receive all new emails".
3. The email client now receives all emails manually without restarting.

Create shortcut for manual mail reception

Since you have to check your mail manually until further notice, you should create a shortcut. Here's how it works:

1. In the menu bar, click on "View" -> "Customize toolbar ...".
2. Drag the button "Take all accounts offline" to your menu bar.
3. If you don't have the "Receive mail" button in the menu bar, add it as well.
4. To check your mail, first click on "Take all accounts offline" in the menu bar and then on "Receive mail".

Apple may fix the problem with the update to OS X 10.9.2. Tip: Also read how to activate the read receipt for mail.