export const mailFunc = functions.database.ref('/data/{messageId}')
.onCreate((snapshot, context) => {
    const data = snapshot.val();

    const transporter = nodemailer.createTransport({
        service: "Zoho",
        auth: {
            user: 'name@mydomain.in',
            pass: 'passwordgoeshere'
        }
    });

    const mailOptions: nodemailer.SendMailOptions = {
        from: 'name@mydomain.in',
        to: 'someone@gmail.com',
        subject: 'Here goes the subject',
        text: `${data.message}nn${data.name}`
    };

    return transporter.sendMail(mailOptions)
});

Error: getaddrinfo ENOTFOUND smtp.zoho.com
    at errnoException (dns.js:28:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)