Inbox.lv - Inbox.lv Mail
Gmail Mail Merge - Send personalized emails with attachments
CounterMail - Countermail is a web-based email service. It is hosted in Sweden. Its focus is on privacy.
Dynamically Personalized Emails by QGraph - Hyper-personalized emails for E-commerce
Yaani Mail - E-Mail Service, Mobile Application, Web
Dynamic Campaigns by Sigstr - Share the most relevant content in every email