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Services API

Registers an MCore library with a specified registration key. Without a registration, MCore library works in a limited mode and can process only the first 100 mail objects.


Delphi syntax:

procedure SetRegisterKey(Key: LPSTR);

С++ syntax:

void WINAPI SetRegisterKey (LPSTR Key);

C# syntax:

public static extern void SetRegisterKey([MarshalAs(UnmanagedType.LPStr)] String key);




MCore library registration key, zero-terminated string.



      Not registered copy of MCore return special error code OMS_MAILBOXSDKNOTREGISTER when processing first 100 mail objects.

      To register your need simply put registration key as parameter to SetRegisterKey API before make any operation with mailbox objects.


Please contact as to get YOUR OWNED MCore library register key:


Solution Software Logic Inc.

40 Glushkova Av.

Kiev, 03187, Ukraine

+380 44 492 93 42

    +380 44 492 93 45

     Fax: +380 44 526 93 46


Marketing & PR Department:

Victor Panchenko

+380 44 526 93 44


HR Department:

+380 44 492 93 43


General inquiries:






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