Mandrill

Mandrill is a reliable, scalable and secure delivery API for transactional emails from websites and applications. Designed for application developers rather than email marketers, Mandrill uses an API and SMTP server optimized for sending emails as fast as possible. Be certain that your emails will go through spam filters and into inboxes with Mandrill's custom SPF and DKIM records and private IP address/IP pool.

Mandrill's webhooks provide notification of bounce rates and spam complaints. Mandrill offers a dashboard showing detailed statistics, a searchable activity log for information about the emails you've sent. Other analytics features include split-testing, comparative reports and custom metadata. With the first 12,000 emails/month for free, Mandrill is an ideal solution for smaller apps and a cost-effective one for larger apps. Integrate Mandrill’s analytics into your own database, and keep track of trends like open rates, clicks, and unsubscribes.

Send from more than one domain within a single Mandrill account, with no additional fees. A dedicated IP can be used for multiple domains. Use conditional logic and merge tags to customize your emails for individual recipients. Provide HTML, and Mandrill can automatically generate a text version for display in email clients that don’t support HTML. Or Mandrill can generate HTML from your plain-text email, so you can track opens. Apply automatic actions to emails without modifying your code.

Have Mandrill manage your inbound email, process it, and POST it to your site or application. Set up custom routes for email addresses and patterns. Mandrill lets you set a variety of options for your emails, either by default or per message. Create a custom integration with a variety of options. Leverage Mandrill's reputation and quota system to manage and control your own users' emails.

You may like to read: Free & Top Transactional Email Software and Free & Premium Email Marketing Software