Active Installations: 90,000+
Mailgun is a transactional email API service aimed at WordPress developers. However, even a non-developer can learn the ropes of this WordPress plugin to send and track transactional and marketing emails.
Apart from growing your mailing list and driving conversions, this popular WordPress plugin can also cleanse and update the contact database – a much-needed feature for growing businesses.
2. Post SMTP Mailer
Active Installations: 300,000+
Post-SMTP Mailer can supercharge your email deliverability to ensure that you do not go out of sight or out of mind. While its plugin for WordPress is truly outstanding, the Google Chrome extension takes the cake as it updates you on issues or failures in real time. Further, it integrates with multiple tools and platforms, from Amazon SES to Office 365 to Better Email Logger to Twilio – which offers interoperability.