How to Send an Email With Attachment from R in Windows

Sending email attachment in R via Outlook

Your issue lies in the fact that you have not escape the escape when adding the attachment

You have the below

 outMail[["Attachments"]]$Add("A:/Automate_Emails/Test_Attachment.pdf")

You it should look like this

 outMail[["Attachments"]]$Add("A:\\Automate_Emails\\Test_Attachment.pdf")

Sending email in R via outlook

You can use RDCOMClient package to access to COM objects from within R. You can easily access the Application Object (Outlook) and configure it. Here a simple example of sending an email:

library(RDCOMClient)
## init com api
OutApp <- COMCreate("Outlook.Application")
## create an email 
outMail = OutApp$CreateItem(0)
## configure  email parameter 
outMail[["To"]] = "dest@dest.com"
outMail[["subject"]] = "some subject"
outMail[["body"]] = "some body"
## send it                     
outMail$Send()

Of course, this assumes that you have already install outlook and configure it to send/receive your emails. Adding attachment is quite simple also:

outMail[["Attachments"]]$Add(path_to_attch_file)

sending on behalf of secondary mailbox:

outMail[["SentOnBehalfOfName"]] = "yoursecondary@mail.com"

sendmailR (Part2): Sending files as mail attachments

With the mailR package (https://github.com/rpremraj/mailR), you could send HTML emails and additionally attach files with ease as below:

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)

Edit (2014-05-13):

mailR has been updated to allow different character encodings. Below is an example to send the message as UTF-8.

send.mail(from = "Sender Name <sender@gmail.com>",
          to = "recipient@gmail.com",
          subject = "A quote from Gandhi",
          body = "In Hindi :  थोडा सा अभ्यास बहुत सारे उपदेशों से बेहतर है।
                  English translation: An ounce of practice is worth more than tons of preaching.",
          encoding = "utf-8",
          smtp = list(host.name = "smtp.gmail.com", port = 465, user.name = "gmail_username", passwd = "password", ssl = T),
          authenticate = TRUE,
          send = TRUE)

Send authenticated mails via Outlook through R using mailR package

This took me a while to figure out. Try this:

send.mail(from = "username@custom.org",
          to = c("recipient1@custom.org", "recipient2@custom.org"),
          subject = "Title",
          body = "Hello from R.",
          authenticate = TRUE,
          smtp = list(host.name = "smtp.office365.com",
                  port = 587,
                  user.name = "username@custom.org",
                  passwd = "Pa55w0rd",
                  tls = TRUE))

It is a common misconception that the port is 25 or 447. I believe port 25 can only be used whenauthenticate = FALSE.

Many sources claim that the correct server is smtp-mail.outlook.com. Perhaps you could try this in the event that the code does not work. Moreover, do not use ssl = TRUE. It has to be tls = TRUE.

Shoutout to Rahul Premraj's answer to this archived 2014 question.

Email an attachment in R with gmail

A response that works and works well is found here:

http://r.789695.n4.nabble.com/Email-out-of-R-code-td3530671.html

Thank you to nutterb for an answer from the rhelp list. Thank you to all that tried to assist me and were patient with my ignorance of python.