Once LotusExtension.dll has been copied to the Lotus\Notes directory and the notes.ini file has been modified to declare the library as a client extension, you can launch Lotus Notes and begin sending e-mail. Each e-mail message should generate entries in C:\LN_LOG. Here is an example log:
*BODY: test1 * ATTACHMENT: This is a test attachment file * BODY: test 2 * ATTACHMENT: This is a test attachment file * ATTACHMENT: This is another test attachment file * DESTINATION(S): x@y.com * BODY: test3 * ATTACHMENT: This is a test attachment file * DESTINATION(S): x@y.com,CN=john doe/O=lotus@dominoServer