GreenTools for Microsoft Apps (G4MS) v9.12 now includes the function g4msmail_sendMailMime() which allows you to send an email using Office 365 from your IBM i with a pre-created MIME file.

Why is this important?  If you are making the move from your current email application, whether 3rd party or home grown, and you are using the QtmmSendMail API, you already have a MIME file created.  With this new function only small changes would be needed to your application in order to make the move to a more secure email system using Office 365 and Microsoft Graph APIs that unilize OAuth 2.0.

Note: As of this date, the email size limit is 4MB.  This is a known issue at MS and hopefully they are working on an update.

     H DFTACTGRP(*NO) BNDDIR('G4MS')
      ****************************************************************
      * Imports
      ****************************************************************
      /COPY QCOPYSRC,P.G4MSMAIL
      ****************************************************************
     D rc              S             10i 0
     D errorMsg        S            256
      ****************************************************************
      /free

       // Set the id of the account you wish to send an email from
       rc = g4msmail_setValue('id':'bvstone@bvstools.xxxxxxxx.com');
       rc = g4msmail_setValue('sendmail_mime_file':'/tmp/mimetestbig.txt');
       rc = g4msmail_setValue('debug':'*ALL');
       rc = g4msmail_sendMailMime(g4ms_uniqueID:errorMsg);

       if (errorMsg <> ' ');
         // do something if there is an error
       endif;

       EXSR $return;
       //***************************************************************
       //* Return
       //***************************************************************
       begsr $return;

         *INLR = *ON;
         return;

       endsr;