Interesting indeed. When looking at the source of one of my emails, I found this:
MIME-Version: 1.0
X-CNFS-Analysis: 01044410_02044402_0303444303
When checking the numerical sequences (reading left to right above), using epoch time converter, I discovered the following:
GMT: Tuesday, 13 January 1970 02:06:50
Your time zone: Tuesday, 13 January 1970 03:06:50
Relative: 51 years ago
GMT: Saturday, 24 January 1970 15:53:22
Your time zone: Saturday, 24 January 1970 16:53:22
Relative: 51 years ago
GMT: Tuesday, 14 August 1979 02:05:03
Your time zone: Tuesday, 14 August 1979 03:05:03
Relative: 41 years ago
Okay the date is not exact as per my previous e mails but the representative year (1970 for 01044410_02044402) looks to be, unless I've missed something else within the source page - nevertheless this is the only place (within the source page) where these timestamps appear.
I'll give your advice a try and see what happens.
For interest, you may find it interesting to have a look at the following site - Dates in Hiding, Uncovering Timestamps in Forensic Email Examination - link:
https://www.metaspike.com/timestamps-forensic-email-examination/
Cheers Chris - bw41101