Use the drop down menu to get more options of advanced search, then you can select the folder you want to search, and also date parameter to look for...
I've tried that now and I get an error message, after some time.
I don't use the webmail to handle my emails; I do it all in MS Outlook. I'll have a think how I might do it that way. (Unless there is a way to download the headers for all 35,000?)
Haven't used Outlook for years, but, if all your emails are there, why not simply do the 'search' on that? (I have in excess of 70,000 emails on WebMail and the search function works just fine on it)
My Outlook inbox is approaching 2Gb - at which point it falls over, so it has to be archived in 2Gb chunks. I was hoping to find a couple of emails from about 5 years ago - and was tantalised by seeing all 35,000 mentioned in the web account. I will continue to play - thanks for the help.
It' simpler in MS Outlook (365). Make sure that you archive before you make drastic changes.
Are you on iMap or POP3? There are some subtle differences.
iMap keeps the mail on the server by default, which presumably is why you have such a backlog. Keep it that way! And delete any mails (from the server) that you don't need.
My BT email account is on POP3 whereas my others are IMAP. I'd like to move BT to IMAP but I fear there will be snags. I'm on Outlook 2013 and toying with 365, although the interface is not to my liking. I use Start10 to make my Windows 10 look like Windows 7, and that works very well.