I recently found http://www.mandrill.com which seems to be transaction e-mail service from MailChimp. It allows to send e-mails thru SMTP and API. It also provide many other functions like delivery, open tracking, templates ans so on. Its free for up to 12000 e-mails per month.
JangoSMTP 是另一种选择。您可以通过 SMTP 或 API 发送，它具有开放跟踪、点击跟踪、Google Analytics 集成和日志报告功能。
JangoSMTP is another option. You can send via SMTP or API and it comes with open tracking, click tracking, a Google Analytics integration, and log reporting.
Postmark and Deliver are probably the best tools for this. Of course another possibility is to install an email server like Postfix on your web server, which can handle a large number of emails without any cost, though won't have the delivery reliability or tracking offered by a paid service.
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除了您提到的 SendGrid 之外，还有 邮戳用于交易电子邮件，Newsberry用于电子邮件营销
Besides SendGrid which you mentioned, there is also Postmark for transaction emails and Newsberry for email marketing
我最近发现 http://www.mandrill.com 这似乎是 MailChimp 的交易电子邮件服务。它允许通过 SMTP 和 API 发送电子邮件。它还提供许多其他功能，如交付、开放跟踪、模板等。每月最多可免费发送 12000 封电子邮件。
I recently found http://www.mandrill.com which seems to be transaction e-mail service from MailChimp. It allows to send e-mails thru SMTP and API. It also provide many other functions like delivery, open tracking, templates ans so on. Its free for up to 12000 e-mails per month.
JangoSMTP 是另一种选择。您可以通过 SMTP 或 API 发送，它具有开放跟踪、点击跟踪、Google Analytics 集成和日志报告功能。
JangoSMTP is another option. You can send via SMTP or API and it comes with open tracking, click tracking, a Google Analytics integration, and log reporting.
正如佩卡所说，您可能可以在服务器上使用本地 mta。类似于 unix 上的 /usr/sbin/sendmail 或 win 上 IIS 中的 SMTP 服务
you can probably use your local mta on your server as pekka said. something like /usr/sbin/sendmail on unix or the SMTP Service in IIS on win
邮戳和投递可能是最好的工具。当然，另一种可能性是在您的网络服务器上安装像 Postfix 这样的电子邮件服务器，它可以免费处理大量电子邮件，但不具备付费服务提供的递送可靠性或跟踪功能。
Postmark and Deliver are probably the best tools for this. Of course another possibility is to install an email server like Postfix on your web server, which can handle a large number of emails without any cost, though won't have the delivery reliability or tracking offered by a paid service.