如何从R Shiny的联系表发送电子邮件

Posted 2021-04-30

我在Shiny应用程序中实现了联系表格，并使用包'blastula'及其功能'smtp_send'将消息发送到发件人提供的电子邮件地址。代码是：

library(shiny)
library(blastula)
library(shinyAce)

ui = fluidPage(
  fluidPage(
    wellPanel(
      textInput("from"   , "From:"   , value="...@..."),
      textInput("to"     , "To:"     , value="...@..."),
      textInput("subject", "Subject:", value="This is the subject"),

      p("Message", style="font-weight: bold;"),
      aceEditor("msg", value="This is the message"),
      br(),
      actionButton("send", "Send email!")
    )
  )   
)

server <- function(input, output)
{
  observe(
  {
    if(is.null(input$send) || input$send==0) return(NULL)

    Email = compose_email(body = input$msg, header = NULL, footer = NULL, title = NULL)
    Credentials = creds_anonymous(host = "smtp...", port = 25, use_ssl = TRUE)

    smtp_send(email = Email, to = input$to, from = input$from, subject = input$subject, credentials = Credentials)
  })
}

shinyApp(ui = ui, server = server)

在本地运行此脚本并使用port = 25给出错误消息：'警告：curl :: curl_fetch_memory中的错误：RCPT失败：550'。

使用端口= 465或端口= 587给出错误消息：'警告：curl :: curl_fetch_memory中的错误：超时：[smtp ...：465]连接在10000毫秒后超时'。

[在使用port = 25的服务器上运行脚本时，出现错误消息：'curl :: curl_fetch_memory中的错误：Recv失败：对等重置连接。

我检查了smtp服务器的地址，应该正确。它是一台不需要帐户的服务器。

有人知道为什么代码不起作用吗？

答案

我已经提取了如何使用我的应用程序管理电子邮件问题的方式-gmail方式无法用于Outlook One，我不确定，因为我有一段时间没有检查它。

首先用您自己的gmail方式替换详细信息。

代码下面，忽略中间的斯洛文尼亚文。当有人可以发送邮件和发送电子邮件以及地址是否正确等等时，它们也是一些检查...

可能有帮助..

编辑：必须定义问题，您的电子邮件地址应为gmail.com。

library(shiny)
# library (RDCOMClient)
Sys.setenv(JAVA_HOME='C:\Program Files\Java\jre1.8.0_241/') 
library(mailR)
library(shinythemes)
library(shinyjs)

ui = fluidPage(
  useShinyjs(),
  fluidPage(
    br(),
    fluidRow(
      column(12,align="center",
             h1(icon("envelope", lib = "font-awesome"))),
      br(),
      column(12,align="center",
             textInput("telo", "Problem statement","", width = "400px",
                       placeholder= "obvezno izpolnite!"),
             br(),
             textInput("kontakt","Your working email - necessary!","",
                       placeholder = '[e-mail]'),
             helpText("Test email= [e-mail]"),
             actionButton("send", "Send",icon("fas fa-arrow-up", lib = "font-awesome")),
             br())),
    br(),
    fluidRow(
      column(12,
             br()))
  )



)   


server <- function(input, output,session)
{
  disable("send")
  ###################################################################################### pošlji email, telo strani
  testek11<-function(failed = FALSE) {
    modalDialog(
      title="",
      fluidRow(column(12,align="center",
                      "SEND.")),
      br(),
      easyClose = FALSE,
      footer=fluidRow(column=12,align="center",
                      modalButton("OK",icon=icon("fas fa-check-circle"))
      )
    )
  } 

  observeEvent(input$send,{
    #showModal(testek21())
    shinyjs::disable("send")
    shinyjs::disable("nazaj2")
    shinyjs::disable("telo")
    shinyjs::disable("kontakt")


    ## gmail way
    Sys.sleep(2)

    # send.mail(from = paste(input$username,"@domain.com",sep=""),
    #           to = c("[e-mail]"),
    #           subject = paste("Aplikacija NNP: Problem:",input$kontakt,sep=" OD "),
    #           body =  paste(input$telo,input$username,sep=" // OD // "),
    #           smtp = list(host.name = "smtp.gmail.com", port = 465,
    #                       user.name = "[e-mail]",
    #                       passwd = "pass", ssl = TRUE),
    #           authenticate = TRUE,
    # send = TRUE)


    ## outlook way -- possibly outdated

    # OutApp <- COMCreate("Outlook.Application")
    # outMail = OutApp$CreateItem(0)
    # outMail[["To"]] = "ur email adrres to where you want to send -- you can make it reactive"
    # outMail[["subject"]] = "subject"
    # outMail[["body"]] <- "body"
    # outMail$Send()
    # 
    shinyjs::enable("send")
    shinyjs::enable("nazaj2")
    shinyjs::enable("telo")
    shinyjs::enable("kontakt")
    showModal(testek11())
    updateTextInput(session,"telo",value="",placeholder = "Obvezno izpolnite!")
    updateTextInput(session,"kontakt",value="",placeholder = '[e-mail]')
  })

  ##### enabling maile pa to kdaj lahko klikne send

  mailhelp <- reactiveValues(hmm=FALSE)
  mailhelp2 <- reactiveValues(hmm2=FALSE)



  observeEvent(input$telo,{
    if(input$telo != ""){
      isolate(mailhelp$hmm <- TRUE)
    }
    else{
      isolate(mailhelp$hmm <- FALSE)
    }
  })

  observeEvent(input$kontakt,{
    if(grepl("@gmail.com",input$kontakt) |grepl("@GMAIL.CON",input$kontakt) ){
      isolate(mailhelp2$hmm2 <- TRUE)
    }
    else{
      isolate(mailhelp2$hmm2 <- FALSE)
    }
  })

  observe({
    if(mailhelp2$hmm2 & mailhelp$hmm){
      shinyjs::enable("send")
    }
    else{
      shinyjs::disable("send")
    }
  })
}

shinyApp(ui = ui, server = server)