Thanks for your reply Bandersnatch.
Sorry for the confusion, I'm really talking about those I sent. None, I might add, were of an urgent nature.
However, with several PMs remaining in my 'Sent' box marked 'Unread', perhaps I should first alert the recipient in the M.E. public domain!?
Of course it's the recipients choice to ignore/delete.
Just wondering.
Regards,
Sam