Scalix

Offer your customers secure, business-level email hosting with various value added services. An excellent solution for SPs, suitable for thousands to millions of users. Acquire new customers by offering a premium email server solution with a high degree of flexibility, allowing you to automate it within your existing infrastructure. Manage your email, organize and share calendars, sync your mobile devices, all based on a secure and powerful mail server. The perfect answer for businesses of all sizes. Axigen is quite knowledgeable, out of the many hats it wears, take a peek inside and choose what fits you. Manage your email and get stuff done easily with calendars, tasks or notes. Enjoy desktop usability in your browser via keyboard navigation and shortcuts, drag-and-drop, "live" email list view, frequent folders, email filters, out-of-office messages, individual blacklist / whitelist.

Grace Mail is email server software for teams that want control over their email infrastructure. It can be licensed as self-hosted software running on the customer's Linux hardware, or provided as a managed dedicated server operated by LINK-V. The product supports SMTP and IMAP and includes an administration console for managing mailboxes, domains and mail operations. Its two deployment approaches support organizations that want to operate their own server as well as teams that prefer the vendor to operate a dedicated server. Grace Mail is aimed at freelancers, small businesses and technical teams seeking company email on a dedicated or self-hosted server. The software is built and maintained by Profit Visions, and deployment, licensing, migration and support arrangements are agreed with each customer. Customers can assess the self-hosted or managed arrangement against their infrastructure preferences and operational responsibilities.