You can create a smtp mail server in SAP and you can send e-mail in SAP System.
Step by step mail server configuration in SAP
1- Create Default Domain
Tcode > SCOT
SAP SMTP Config 1-1 SAP SMTP Config 1-1
2- Create SMTP Node
TCode > SCOT
SAP SMTP Config 1 SAP SMTP Config 2 SAP SMTP Config 3 SAP SMTP Config 4
3- Create Schedule Job
Tcode > SCOT
SAP SMTP Config 5 SAP SMTP Config 6 SAP SMTP Config 7 SAP SMTP Config 8
4- Configure Mail Address of Users
Tcode > SU01
SAP SMTP Config 1-3
5- Send Test Mail
Tcode > SBWP
SAP SMTP Config 9 SAP SMTP Config 10
6- Monitor Mail Queue Status
Tcode > SOST
SAP SMTP Config 11
