Get list of all people I've e-mailed in Office 365

When you e-mail someone in Office 365 (through webmail or Outlook client), it must "store" the recipient's address somewhere as when you then go to e-mail them later on their name can autocomplete in the address bar (e.g. if I've e-mailed [email protected], I can then start typing a new e-mail and write "sa" into the address bar and it will suggest [email protected]).

Is there a way of getting a list of these e-mail addresses?

I'm basically trying to find a list of any e-mail addresses I have sent to in the past (preferably date-filtered, if this is possible). We're moving e-mail domains on fairly short notice so I'd like to show staff how to e-mail everyone they need to saying "please update your records, I'm now using [email protected] e-mail address".

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