Get Mails from Gmail in R

get_mail.R

# credit goes to http://stackoverflow.com/questions/4241812/how-can-i-send-receive-smtp-pop3-email-using-r

library(rJython)

rJython <- rJython( modules = "poplib")

rJython$exec("import poplib")
rJython$exec("M = poplib.POP3_SSL('pop.gmail.com', 995)")
rJython$exec("M.user(\'<username>@gmail.com\')")
rJython$exec("M.pass_(\'<password>\')")
rJython$exec("numMessages = len(M.list()[1])")
numMessages <- rJython$get("numMessages")$getValue()

# grab message number one. Loop here if you
# want more messages
rJython$exec("msg = M.retr(1)[1]")
emailContent <- rJython$get("msg")

# turn the message into a list
contentList <- as.list(emailContent)
# so we have an R list... of Java objects
# To get a more native R list we have to
# yank the string from each Java item

messageToList <- function(contentList){
  outList <- list()
  for (i in 1:length(contentList)){
    outList[i] <- contentList[[i]]$toString()
  }
  outList
}

messageAsList <- messageToList(contentList)
messageAsList