[LaravelConf Taiwan 2018] 訊息通知的奧義 - 大量寄發 Email 及簡訊的技巧

The document discusses email delivery and authentication. It explains how emails are sent from the sender's mail server, through the internet, and received by the recipient's mail server. It then lists several methods used to authenticate emails, such as TLS, IP PTR, DMARC, DKIM, and SPF. The document also mentions various email metrics tracked, including click rate, open rate, mobile open rate, visit duration, and time of highest open rate. It concludes by thanking the reader.