Using gmail and occasionally missing a lastbestplace email that is
filtered into the Spam folder?
The fix:
Settings > Filters and Blocked Addresses
Create a new filter
Use the email address "lastbestplace@mailman.ejop.com"
Once created, select the option "Never send it to Spam"
This at least works for me.
I also think emails that go thru gmail's spam filtering processes
may also get delayed in order to be filtered.