Is that true? You can put a past date on an email from google? That seems dodgy to me… it was once a tactic of spammers to ensure that their message was always at the top (by putting that it was sent five years ago)
I know in outlook you can put a future date on an email, so outlook actually sends the email in the future (but it would only work on an exchange server and/or a computer that is on at the time the email is due to be sent)
Are you sure the google feature isn’t just for sending emails inthe future?
Obviously, this is a joke, but it’s trivially easy to send an email with an older time stamp. At the very easiest, send it from a host-based client (ie, not webmail) and set your system time back to whatever you want the timestamp to say. The headers will give you away, but who checks the headers?
Well… My excuse is I missed that trick because it’s so obivious… (Clever people like me tend to see past the really freakin obvious and look for the clever answer)
This sort of thing was the bane of my existence for a while in a previous job as a sysadmin. Within one month, we had one machine sending emails from 1956 (I think, I’m not sure on the exact year any more) and one sending emails from 2020. When I got the email from 2020, I called a co-worker over to confirm that it was, in fact, still 2000… I was afraid of getting in a car accident and being asked “what year is it”, and not being sure… (I’m never quite sure what year it is, but I usually have it to plus or minus one, at least) As far as we could tell, though, the owners of the machines were not doing it deliberately- they wanted us to fix the problem.