Indicate if specified email exists in specified mail box.
[Syntax] C++: HRESULT IsEmailExisted( BSTR MailBox, MsgId As String, long* pVal ) Visual Basic: IsEmailExisted( MailBox As String, MsgId As String ) As long C#: long IsEmailExisted( string MailBox, string MsgId )
Parameters
MailBox
Mailbox name.
MsgId
Message-id of email.
Return Value
If specified email exists in the mailbox, the return values is zero, otherwise, the return value is non-zero.
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