Use the following JCL to send email from mainframe using SMTPNOTE. There are other ways of sending emails as well.

Note:- Attachements can't be send using SMTPNOTE.

 

//STEP01   EXEC PGM=IKJEFT01,
//             DYNAMNBR=250
//SYSPROC  DD  DSN=XXX.DSN.ALLOC.TO.SYSPROC,
//             DISP=SHR
//SYSTSIN  DD  *
SMTPNOTE +
   TO()        +
   CC()        +
   SU(SUBJECT HERE)                      +
   DA('USERID.DSN.BODY.TEXT')  BATCH
//SYSTSPRT DD  SYSOUT=*
//SYSUDUMP DD  SYSOUT=*