On Sun, 10 May 2020 at 19:42, Phil Thane phil@pthane.co.uk wrote:
To: steve@xxxx.co.uk <>
" steve@xxxx.co.uk, "xxxx@gmail.com"
Looking at this bit there seems to be a bit missing (and a stray double quote). My guess is that the mail client sees the gap after the To: line as the end of the message header and what follows is therefore the message body, and " <steve@... isn't the start of a valid HTML document so it is being rendered as plain text.
What caused the gap is anybody's guess. Could be dodgy characters in one of the email addresses or an issue with the client or servers the message passed through Since Outlook was involved I'd be inclined to just blame that but without any genuinely good reason.
Side note: all the email addresses in the message you forwarded are now publicly accessible (and harvestable) in the mailing list archives of three LUG lists. If they were all publicly available already through the original list the message was forwarded from that may not matter, but a quick Google for a couple of phrases in the forwarded email didn't direct me to any public archives.
Mark