如何使用PHP发送SMTP电子邮件而不使用第三方类

Question

I've been using PHPMailer to send SMTP emails, and also have heard some recommend various other 3rd party classes.

I've always been a surprised and a little disappointed that this functionality is not native in PHP.

Do I still need to use a 3rd party class to do so? If not, how? If so, any idea why it isn't native?

Answer 1

PHP does have a native function mail() to send emails, but it is not very efficient. From the official PHP documentation -

It is worth noting that the mail() function is not suitable for larger volumes of email in a loop. This function opens and closes an SMTP socket for each email, which is not very efficient.

Official PHP docs suggest using PEAR::Mail library for efficient email support. I would rather use PHPmailer or Swift mailer(http://swiftmailer.org/) though as they both have excellent support and also well documented.