Hi Hari,
you can use Email connector module to send a mail
Email connector:
https://marketplace.mendix.com/link/component/120739
To send a mail you can refer the below documentation
Doc:
https://docs.mendix.com/appstore/connectors/email-connector/?_gl=1*wtkx8l*_ga*MTEwMDUyMTU3Mi4xNjQ1NTA3MzA4*_ga_4PE2C4QFC7*MTY4OTk0MjA5OC41MTMuMS4xNjg5OTQzODk2LjQ5LjAuMA..#41-sending-email