That’s a good point, Linda, about checking with other tech support personnel to see if the same story holds. In this case I was “upgraded” to a sr. tech as the first person was not able to resolve the issue. A lot of good that did. . . 

Happily, none of my e-mail was, in fact, lost at all. It just seemed to be lost. And before I discovered this I imported my mail from Time Machine several times to get all that back, and it disappeared too! First one mailbox, then another mailbox, finally a third mailbox. But once I had the proper “AHA!” moment and hit Command-L all of those missing messages reappeared where they were supposed to be. It’s like the “Undo” in Photoshop.

The tech had taken me to the menu to check this somewhere along the line. It’s “View” then “Enable Message Filter” in the drop-down menu. Only what she said was that this enables the Rules you set up in the Mail program. Well, I never set any rules on this machine and when she glanced at the setting she said, “Oh, it’s what it should be.” But it wasn’t. It was supposed to be opposite to what she said (disabled rather than enabled). When I told her about this yesterday she said she wasn’t aware that the command filtered out read messages. Yikes.


On Sep 13, 2018, at 7:03 AM, Linda Feltner <[log in to unmask]> wrote:

Thank you for sharing this, Lynette.

It's disturbing when a tech support person says to delete everything and start over.. red flags all over the place.... Does it mean it's unfixable, or simply that one person doesn't know the fix. I'd call back two or three times to see if a different tech has a different opinion.

Does it toggle to remove -then- return all the "read emails"?   Or is there a way to turn that feature off for the future? 

I'm glad you discovered a way to stop the deletions. I hope the others can be recovered.

Linda M. Feltner Artist LLC
P.O. Box 325, Hereford, AZ 85615
On 9/12/18 7:52 PM, Lynette Cook wrote:
[log in to unmask]" class="">
I’ve had a recent issue of e-mail in my Apple Mail program disappearing (Sierra). By chance I discovered why it did that. I had been so grieved - and Apple’s Tech Support was steering me toward deleting all my mail accounts and setting them all up again (horrors!) - that I want to share it with you in case it will keep anyone else from the same anxiety.

It’s all about Command-L. When you use this command repeatedly it toggles on and off a filter of some kind (that Apple apparently built into the application, as I didn’t set it up) and it makes all the read mail in the mailbox disappear. Unread mail remains. Thankfully I figured this out before said account deletions occurred. :) Doesn’t seem to happen in the “main” mailbox. But I have in-boxes and “Sent” boxes for different e-mail accounts and it occurs in all those. 


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