why does gmail put some messages in all mail but not my inbox

Try accessing your Mail app on your iPhone.If you’re not yet running macOS Ventura, you’ll find this in System Preferences instead. To install macOS updates, simply go to System Settings > General > Software Update. I can’t emphasize enough the importance of keeping your Mac’s software up-to-date. If you haven’t embraced the habit of updating your Mac’s operating system whenever Apple pushes new versions, now is a good time to start. More often than not, rebooting your Mac solves hardware and software-related issues such as Gmail not showing all emails in Mac Mail. The first thing you need to do is, of course, restart your computer. I'm running: Thunderbird v68.10.0 and FireFox 78.0.2, on GNU/Linux Debian Buster 10.4.There are several steps that you can take to fix issues with Gmail messages not showing up in your Mac Mail app.

(BTW, by default they don't show the All Mail folder, but you can turn it on with Gear | Settings | See all Settings | Labels | All Mail | Show.)

click the gear, then click 'See all settings', shows that I don't have any filters, nor any forwarding. In fact, the test message is showing up in both their Inbox and All Mail folders. If I login to Google's gmail web page, the very same test message is in their Inbox. Note: I have seen some Thunderbird security updates recently, so I'm not pointing any fingers, just trying to find a solution to this. Suddenly it broke without me changing anything. I've been successfully using Thunderbird to access gmail with IMAP for many years. To be clear, the email is being delivered, just not to the inbox. Why does all incoming email into Thunderbird, via IMAP from my gmail account, now, suddenly no longer show up in that account's Inbox for my gmail account, but rather, only gets put into the All Mail folder there? Also it appears it might be related to this Q.) (It is similar to, but more specific than, this older, and more general question, about gmail access, but with an unspecified email tool and protocol. Note: This Q is specific to gmail, Thunderbird and IMAP.

Why does gmail put some messages in all mail but not my inbox