* Opening a large mailbox for the first time may take quite a long
  time because elmo will try to read all messages.  Leaving this box
  (by opening another one or quitting elmo) will take quite a long
  time for the second time because elmo must write a cache file.  We
  are working on making this faster.

* Resizing terminal causes elmo to exit with message:
  select: Interrupted system call