TCPIP_SMTP_UsageBegin Function

bool TCPIP_SMTP_UsageBegin();

Call this function before calling any other SMTP Client APIs. This function obtains a lock on the SMTP Client, which can only be used by one stack application at a time. Once the application is finished with the SMTP client, it must call TCPIP_SMTP_UsageEnd() to release control of the module to any other waiting applications.

This function initializes all the SMTP state machines and variables back to their default state.

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