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The list of email addesses to send mail to as blind carbon copy.
CoreIdentityIdsReceivers
The list of CoreIdentityId to send mail to.
CoreIdentityIdsReceiversCc
The list of CoreIdentityId to send mail to as carbon copy.
CoreIdentityIdsReceiversBcc
The list of CoreIdentityId to send mail to as blind carbon copy.
Subject
Mail subject.
SubjectKey
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