Inbox.lv - Inbox.lv Mail
SendX.io - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.
CounterMail - Countermail is a web-based email service. It is hosted in Sweden. Its focus is on privacy.
Nova Inbox - Personalize emails in seconds, right from your inbox
Yaani Mail - E-Mail Service, Mobile Application, Web
Mailblast - Email marketing on a budget using Amazon SES