我想在邮件正文中发送下表。我正在使用mailR包。
+
------------+---------------+------------+
| date | device_type | platform |
+============+===============+============+
| 2017-01-24 | desktop | Website |
+------------+---------------+------------+
| 2017-01-24 | mobile | Website |
+------------+---------------+------------+
| 2017-01-24 | tablet | Website |
+------------+---------------+------------+