The other day on my Mac I moved two old emails from a remote IMAP folder to the Inbox because I wanted to have them handy the next few days. They were promptly shown in the summary Inbox. Great. But this morning on my iPhone I notice that its Inbox now also showed two additional emails, but they were two different emails!
I should probably mention the two emails the iPhone showed were also from that same IMAP folder I moved the original messages from. But they were otherwise entirely unrelated (subject, date stamp, from, etc.). This is work mail so backend it’s all gmail that I access through IMAP. I started wondering if this was some kind of issue with some kind of indexing being done differently on iOS vs. OS X IMAP…
Anyway, on my Mac I then proceeded to move the two emails from the Inbox back to that IMAP folder and sure enough not only did they get moved on my Mac, the other two emails in the iPhone’s Inbox also moved back to that folder. Hmm, smells like indexing. At this point I figured I’d try it again to see if this had just been some momentary glitch. So on my Mac I move the two messages from the IMAP folder to Inbox. They show up there just fine. But again on the iPhone I again had two different emails show up in Inbox. Fine, it’s reproducible.
At this point on the iPhone I navigated to that IMAP folder, and moved one of the two emails that I originally wanted to move to the Inbox. Sure enough, the iPhone’s Inbox then correctly showed that email in the Inbox. But on the Mac Inbox, I now had that email displayed twice. On the Mac, I moved one of those copies from Inbox back to the IMAP folder. The Mac now shows one copy in Inbox and one in the folder. The iPhone shows one copy in Inbox and nothing in the folder.
What the heck?
Assuming, I’ve not gone prematurely senile over night, is there any rational explanation for what’s going on here or is this just another weird manifestation of gmail + IMAP + iOS = no bueno?