Question

根据this相关问题中提供的说明，我能够发送html格式的邮件。现在的问题是：我应该如何修改以下代码，以便将一个或多个文件（任何类型）附加到此消息中？

library(sendmailR)

from <- "<sendmailR@myserver.mycompany.com>"
to <- c("<someone@mycompany.com>","<anotherone@mycompany.com>")
subject <- iconv("Message Title", to = "utf8")

msg <- "<hr size='2' width='33%' style='text-align: left;'><font size='2'>
  <i>This email was sent automatically using <a href='http://finzi.psych.upenn.edu/R/library/sendmailR/html/00Index.html' rel='nofollow' target='_blank'>sendmailR</a>.<br>
  Please do not reply directly to this e-mail.</i></font>"

msg <- iconv(msg, to = "utf8")

sapply(to,function(x) sendmail(from, x, subject, msg, control=list(smtpServer="###.###.###.###"), headers=list("Content-Type"="text/html; charset=UTF-8; format=flowed")))

Answer 1

使用mailR包（https://github.com/rpremraj/mailR），您可以发送HTML电子邮件并轻松附加文件，如下所示：

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)

编辑（2014-05-13）：

mailR已更新为允许不同的字符编码。以下是将消息作为UTF-8发送的示例。

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)

Answer 2

工作（至少对我来说）功能：

sendMessage<-function(contents,subject,from,to,attMIME,attachment,control){    
   msg<-list(contents,sendmailR:::.file_attachment(attachment,attachment,attMIME));
   sendmail(from=from,to=to,subject=subject,msg=msg,control=control);
}

可以像这样使用：

png('a.png');hist(rnorm(700));dev.off()
sendMessage('Here you have a nice histogram:',
'Nice picture',
'from@example.com',
'to@example.com',
'image/png',
'a.png',list(smtpServer="..."))

请注意，此示例发送的邮件可能会被标记为垃圾邮件，因为它是一个简短的文字和一张大图片 - 但是对于较大的邮件而言，比方说它应该经过的pdf附件。如果没有，您可以考虑添加该消息的文本版本。

编辑（现在不太相关）：可以找到有关如何制作MIME邮件的最深入见解here。

Answer 3

请注意，sendmailR的当前版本通过msg列出mime_type个对象来支持附件，即您现在

sendmail( from,to,subject,
          msg=list(mime_part("Here's an attachment for you!"), 
          mime_part(attachmentFileName)), control, headers)`

Answer 4

我会放弃使用R来做到这一点。存在用于在Python中执行此操作的工作，跨平台，稳定的解决方案，您可以从R。

调用Python

如果我必须在Python程序中使用混合效果模型，我会调用R来执行它 - 如果我想在R中执行像发送电子邮件这样的系统任务，我会调用Python来执行此操作。如果你还不知道，它值得学习。

Answer 5

以下是为每日批处理作业设置的示例，例如使用带有多个附件（一个CSV，一个PDF）的R（包sendmailR）中的sendmail（）进行设置：

在文件名中设置要引用的日期信息：

> yesterday_date_stuff  <- new.env()
> yesterday_date_stuff[['month']] <- strftime(Sys.Date()-1, format="%m")
> yesterday_date_stuff[['day']] <- strftime(Sys.Date()-1, format="%d")
> yesterday_date_stuff[['year']] <- strftime(Sys.Date()-1, format="%y")
> yesterday_date_stuff$month
[1] "03"
> yesterday_date_stuff$day
[1] "29"
> yesterday_date_stuff$year
[1] "17"

现在在本文末尾为sendmail（）函数创建一些所需信息：

> from <- "youremail@whateveryourmailserveris.com"
> to <- c("person_A_to_send_email_to@whatever.com", "person_B_to_send_email_to@whatever.com", "person_C_to_send_email_to@whatever.com")
> subject <- paste("whatever you want subject line to read for batch job analyzing data for ", yesterday_date_stuff$month, "/", yesterday_date_stuff$day, "/", yesterday_date_stuff$year, sep="")
> body <- "Text to insert into the body of your email"

在此处指定邮件服务器：

> mailControl=list(smtpServer="mail.whateveryourmailserveris.com")

定义附件1路径和名称：

> attachmentPath1 <- paste("file1name", "_", yesterday_date_stuff$month, yesterday_date_stuff$day, yesterday_date_stuff$year, ".csv", sep="")
> attachmentName1 <- paste("file1name", "_", yesterday_date_stuff$month, yesterday_date_stuff$day, yesterday_date_stuff$year, ".csv", sep="")

定义附件1对象：

> attachmentObject1 <- mime_part(x=attachmentPath1,name=attachmentName1)

定义附件2路径和名称：

> attachmentPath2 <- paste("file2name", "_", yesterday_date_stuff$month, yesterday_date_stuff$day, yesterday_date_stuff$year, ".pdf", sep="")
> attachmentName2 <- paste("file2name", "_", yesterday_date_stuff$month, yesterday_date_stuff$day, yesterday_date_stuff$year, ".pdf", sep="")

定义附件2对象：

> attachmentObject2 <- mime_part(x=attachmentPath2,name=attachmentName2)

现在将电子邮件正文与您的附件合并：

> bodyWithAttachment <- list(body,attachmentObject1, attachmentObject2)
> bodyWithAttachment
[[1]]
[1] "Text to insert into the body of your email"

[[2]]
<environment: 0x000000004efff188>
attr(,"class")
[1] "mime_part"

[[3]]
<environment: 0x00000000407a1b68>
attr(,"class")
[1] "mime_part"

使用sendmail（）函数发送电子邮件：

> sendmail(from=from, to=to, subject=subject, msg=bodyWithAttachment, control=mailControl)

sendmailR（第2部分）：将文件作为邮件附件发送

5 个答案: