Not all my emails in the "to-do" list are being displayed on Boxer (for a Gmail account)
Same here. I have about 5 to do mails and 8 starred mails in two different mail accounts. In the combined view sometimes I see all starred and to do mails (total) and sometimes several are missing.
I have 37 emails in my Gmail account "to-do" list, but Boxer only displays around 16. Initially, I thought that only old emails were being hid, but then I noticed that even some recent emails were gone (awkwardly, I noticed a message intermittently being displayed and hid while I compared my Boxer's "to-do list" to my Gmail's)