Maileroo - Maileroo is a powerful email delivery platform, featuring a user-friendly SMTP service and Email API. It specializes in supporting transactional emails with advanced features like delivery tracking, as well as detailed open and click monitoring.
Workona - A better way to work in the browser.
Postmark Express - What happens to your emails after you hit the "send" button?
Tab Manager Plus for Chrome - The only tab manager you'll ever need
Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.
Toby - Better Than Bookmarks