library(mailR)

sender <- 'aaaa@gmail.com'
recipients <- c('aaaa@gmail.com')
send.mail(from = sender,
              to = recipients,
              subject = 'My bot sent this',
              body = 'Test Successful',
              smtp = list(host.name = 'stmp.gmail.com', port= 587,
                               user.name = 'aaaa@gmail.com',
                               passwd = 'aaaa', tls= TRUE),
              authenticate = TRUE,
              send = TRUE)

org.apache.commons.mail.EmailException: Sending the email to the following server failed : stmp.gmail.com:587
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1410)
    at org.apache.commons.mail.Email.send(Email.java:1437)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at RJavaTools.invokeMethod(RJavaTools.java:386)
Caused by: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: stmp.gmail.com, 587; timeout 60000;
  nested exception is:
    java.net.UnknownHostException: stmp.gmail.com
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2053)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:697)
    at javax.mail.Service.connect(Service.java:386)
    at javax.mail.Service.connect(Service.java:245)
    at javax.mail.Service.connect(Service.java:194)
    at javax.mail.Transport.send0(Transport.java:253)
    at javax.mail.Transport.send(Transport.java:124)
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1400)
    ... 6 more
Caused by: java.net.UnknownHostException: stmp.gmail.com
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:310)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:236)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2019)
    ... 13 more
NULL
Error: EmailException (Java): Sending the email to the following server failed : stmp.gmail.com:587

> traceback()
10: stop(list(message = "org.apache.commons.mail.EmailException: Sending the email to the following server failed : stmp.gmail.com:587",
        call = .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod",
            cl, .jcast(if (inherits(o, "jobjRef") || inherits(o,
                "jarrayRef")) o else cl, "java/lang/Object"), .jnew("java/lang/String",
                method), j_p, j_pc, use.true.class = TRUE, evalString = simplify,
            evalArray = FALSE), jobj = <S4 object of class "jobjRef">))
9: .Call(RJavaCheckExceptions, silent)
8: .jcheck(silent = FALSE)
7: .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod", cl,
       .jcast(if (inherits(o, "jobjRef") || inherits(o, "jarrayRef")) o else cl,
           "java/lang/Object"), .jnew("java/lang/String", method),
       j_p, j_pc, use.true.class = TRUE, evalString = simplify,
       evalArray = FALSE)
6: .jrcall(x, name, ...)
5: email$send() at MessageBot.R#15
4: eval(expr, envir, enclos)
3: eval(ei, envir)
2: withVisible(eval(ei, envir))
1: source("MessageBot.R")