The webmail session now lasts 30 days and is swapped for a fresh token once a day while in use; the console keeps its fixed 8 hours. Each sign-in is also filed under lm_acct_<mailbox id>, with new endpoints to list and switch accounts, and sign-out now leaves the other accounts signed in. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>