Emails I receive from Fastmail users (via POP3) are labeled with GMT time rather than the user's own time zone, if they used the web interface to compose the email message. If the user composed the email using a mail client and sent it using the Fastmail SMTP server the timezone looks correct.
So as a test I sent myself a message using Fastmail's web interface. Sent to my alternate email account. When I retrieve it using Pocomail/POP3 the message time is 7 hours ahead of the tiem it was actually created (I'm in -0700 zone). But if I create message using Pocomail on my local PC and send it using the Fastmail SMTP server it has my local time when I retrieve it using POP3. Does this make sense?
Not an urgent issue, but it got my curiosity... Thanks!
