Non solicitation breach email

since you have not directly send the emails neither they are addresed to you , and just for being added as copy does not voilates the term solicitation provided if you are not referred in the body of email.

Just for the reasons mentioned by you herein doese not makes you responsibe to losses as there is nothing addressed to you  directly. However you were suppoused to tender a resignation and if that is yet to be done must submit your resignation giving details and effecting from the actual date of resignation