How can I send/receive (SMTP/POP3) email using R?

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I strongly suspect the most upvoted answer will be \"that is the wrong tool for the job\". I acknowledge that R may not be particularly well suited for sending and receiving

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小鲜肉

2020-12-15 09:02

Look at the sendmailR package on CRAN.

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你的背包

2020-12-15 09:03

Pulling messages from a Pop server

To take a stab at implementing @JorisMeys idea of taking advantage of other languages, I took a stab at pulling mail from Gmail (over ssl) using Python and the rJython package. Jython is Python implemented on the Java virtual machine, so using rJython feels to me a bit like using R to call Java that then pretends to be Python.

I find rJython pretty easy for simple things, but since I'm not well versed in S4 objects and (r)Java I sometimes struggle to properly manipulate the return objects from rJython. But, it works. Here's a basic construct that will pull a single message from a Gmail account:

library(rJython)

rJython <- rJython( modules = "poplib")

rJython$exec("import poplib")
rJython$exec("M = poplib.POP3_SSL('pop.gmail.com', 995)")
rJython$exec("M.user(\'yourGmailAddy@gmail.com\')")
rJython$exec("M.pass_(\'yourGmailPassword\')")
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

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说谎

2020-12-15 09:15

With the mailR package (http://rpremraj.github.io/mailR/), you could send emails with SSL:

send.mail(from = "sender@gmail.com",
          to = c("recipient1@gmail.com", "recipient2@gmail.com"),
          subject = "Subject of the email",
          body = "<html>The apache logo - <img src=\"http://www.apache.org/images/asf_logo_wide.gif\"></html>",
          html = TRUE,
          smtp = list(host.name = "smtp.gmail.com", port = 465, user.name = "gmail_username", passwd = "password", ssl = TRUE),
          attach.files = c("./download.log", "upload.log"),
          authenticate = TRUE,
          send = TRUE)

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