Apple has been working around the clock to address Mail issues in OS X, and an upcoming 10.9.2 update should further alleviate these problems. But, until then, Apple offers the following (temporary) fix.
In a Support document posted online, the company acknowledges that “For some email providers, new email messages in Mail may only appear to arrive when Mail is first opened. No new email arrives until Mail is quit and reopened.”
This problem seemingly affects a great deal of users, and Apple offers a quick workaround until an official patch is deployed.
The company explains that “Quitting and reopening Mail forces it to re-establish a connection to the email server.”
Users are told to follow these exact steps to avoid quitting Mail and continue to receive new mail messages:
1. Choose Mailbox > Take All Accounts Offline.
2. Choose Mailbox > Get All New Mail.
Apple offers an alternative as well: “As a shortcut, you can also add the Take All Accounts Offline and Get Mail buttons to your Mail toolbar,” the company says. The steps for this are outlined below.
1. Choose View > Customize Toolbar.
2. Drag the Take All Accounts Offline button to the Toolbar if it is not there already.
3. Drag the Get Mail button to the Toolbar if it is not there already.
4. Click Done.
Finally, users must click the Take Offline button, then click the Check Mail button, and the new messages will begin to trickle in, the Cupertino giant says.
As noted above, this workaround may not be necessary after Apple deploys OS X Mavericks version 10.9.2, the upcoming software update that the company is currently working on internally.
There is no specific launch date that we are aware of, but Apple usually spends between two and three months developing these updates. At this point, at least a couple more betas can be expected.