Zimbra is the trusted email and collaboration platform and productivity suite that includes contacts, calendar, tasks, chat and file sharing, plus videoconferencing, document editing, and file storage. Built on an open source core, it features a modern interface, pre-integrations with popular third-party apps like Zoom, Slack and Dropbox, and can be deployed in the cloud or in on-prem and hybrid environments. Enterprises, governments, financial institutions, service providers and remote teams around the world rely on Zimbra to support complex privacy, data sovereignty and security requirements. Today, Zimbra powers hundreds of millions of mailboxes on desktop and mobile devices in more than 140 countries, and is offered by more than 500 BSPs and 2,000 channel partners. Also available now for small and medium-sized business is Zimbra Cloud, starting at $2.95 per month for 30 GB of storage. Visit www.zimbra.com to learn more and begin a free trial.
With x.ai, you can set up templates with preferences for different types of meetings that x.ai uses to generate possible times that work for you. When you’re ready to schedule, you can share a link to your availability or you can ask x.ai to send times to the people you’re meeting with.
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
Roundcube - Web-based IMAP email client
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
mailcow - An open source mailserver suite.
Clara - Clara is a virtual employee that schedules your meetings, getting you to the work that matters, faster.