gmail creates hundreds of empty labels in my gmail account. I have the normal labels Inbox, Sent, ... and then below appears
a label "gmail" with many nested "gmail" inside. There are a great number of these top level labels. I can use the remove
function to delete them but they immediately return. Google does not care when gmail is broken and only provides support
if I have my own domain and then add paid gmail support. It does not appear to be possible to buy support fro a gmail.com email account.
My Xfinity email fails to sync with my gmail Inbox. Thunderbird syncs and shoes the nested labels. Android gmail also works.
Another anomaly is that email sent to my gmail account sometimes appear only in my comcast Inbox on Thunderbird. Thsi is also true for my Inbox on the Xfinity web site.
As an additional test from Thunderbird I sent test email from gmail to both my comcast and gmail accounts and second to gmail only. I sent a 3'rd email from my web gmaiI. I received the comcast in the Thunderbird Inbox but only the 3'rd gmail. All 3 are in the "All Mail" folder. . I also checked with my web gmail and see the same results.