Scheduled maintenance:
Some features related to account registration and licensing may be temporarily unavailable from Friday (May 8) at 1 PM to Sunday (May 10) at 5 PM (PST).
An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. imap/command.c mishandles a NO response without a message.
https://nvd.nist.gov/vuln/detail/CVE-2018-14349