SendinBlue

Comprehensive platform for managing email marketing, transactional messages, autoresponders, and SMS with ease

Effortlessly manage and send personalized email campaigns to large contact lists for marketing communication

Email interface that also offers news and chat

An email client for Mac OS X and Windows

Automates bulk Twitter registrations with proxy support and Excel integration to streamline account creation

Efficient tool to automatically collect and organize multiple email addresses directly from Gmail

Client interface for accessing all of your mail accounts