Lost Activation Code

I would be obliged if I could be sent my Activation Code.  I have had to reset my new Windows 10 Acer laptop, on Acer advice,  as it kept freezing.   I did a file history backup before doing the reset but am struggling to recover my local folders and contacts. Advice would be appreciated.
 Thanks 

Go here https://www.emclient.com/lost-activation-key and enter the email address you used to register eM Client.  They will send the key to you.

Hi Gordon,

Jay Ogram’s answer is of course the correct one, but don’t forget your mail on the server,
webmail can give you a lot of contacts and info, including the mail with the activation code.
But it depends how you handle the mail and deletion…