使用R从Outlook中的邮件下载多个附件

Question

如何使用Outlook中的R下载多个附件（全部为CSV）？

我的代码只是读取第一个附件。我无法遍历邮件中存在的所有附件。

将RDCOMClient用作库

library(RDCOMClient)

outlook_app <- COMCreate("Outlook.Application")


search <- outlook_app$AdvancedSearch(
  "Inbox",
  "urn:schemas:httpmail:subject = 'test'"
)

Sys.sleep(5)
results <- search$Results()

Sys.sleep(10)

results$Item(1)$ReceivedTime() # Received time of first search result

as.Date("1899-12-30") + floor(results$Item(1)$ReceivedTime()) # Received date

for (i in 1:results$Count()) {
  print(i)
  if (as.Date("1899-12-30") + floor(results$Item(i)$ReceivedTime())  == as.Date("2019-04-03")) {
      email <- results$Item(i)
  }
}

attachment_file <- tempfile()

email$Attachments(1)$SaveAsFile(attachment_file)


data <- read.csv(attachment_file)

无法保存第一个附件以外的附件。