Alternatives to atmail

Zoho

Zoho is a suite of business and enterprise applications that can be used to automate processes, improve collaboration and communication, and manage customer relationships. Zoho includes a range of tools such as customer relationship management (CRM), analytics, collaboration, mar...

G Suite

G Suite is an integrated suite of cloud-based productivity and collaboration tools from Google that combines Google's popular services, such as Gmail, Drive, Docs, Sheets, and Slides, with additional enterprise-level features. G Suite enables organizations to collaborate and shar...

Microsoft Office 365

Microsoft Office 365 is a business and enterprise application suite that provides organizations with a range of cloud-based services, including access to Office applications like Word, Excel, Outlook, and PowerPoint. It also includes Exchange Online, SharePoint Online, and Skype ...

Kolab Community

Kolab Community is a free and open source collaborative workspace for businesses, organizations, and individuals to manage projects, tasks and communication. It is a comprehensive suite of tools for sharing and collaborating on documents, tasks, events, and more. It is designed t...

Horde

Horde is an open-source web-based application suite for businesses and organizations. It includes a host of applications for email, calendar, contacts, tasks, notes, and file management. It is based on PHP and using the Horde Application Framework. Horde is designed to be easy to...

Zimbra Collaboration Suite

Zimbra Collaboration Suite (ZCS) is a comprehensive collaboration platform designed to help organizations and individuals communicate, store and collaborate online. ZCS includes a suite of applications and services, including email, calendar, contacts, tasks, file sharing, chat, ...

hMail Server

hMail Server is a free, open-source email server software for Windows and Linux. It is used to set up and manage email accounts and mailboxes on a server. It supports the most popular mail protocols such as IMAP, POP3 and SMTP for sending and receiving emails, as well as allowing...

Microsoft Exchange Server

Microsoft Exchange Server is a popular email and calendar software application developed by Microsoft. It is used by businesses and organizations to facilitate communication, collaboration, and the sharing of documents. Exchange Server provides users with access to a secure and r...

OX Open-Xchange

OX Open-Xchange is an online productivity suite that allows users to access and edit documents, spreadsheets, and presentations in an online environment. It also provides collaboration tools such as task and calendar management, email and instant messaging, and file sharing. The ...

MDaemon Messaging Server

MDaemon Messaging Server is an email server software application developed by Alt-N Technologies for Windows-based server operating systems. It is designed for small to medium-sized businesses and provides secure, reliable, and feature-rich email, calendaring, collaboration, inst...

Kerio Connect

Kerio Connect is an application designed to help businesses securely store, share, and sync data across multiple devices and locations. It offers secure cloud storage, email, and file sharing services, as well as calendar and contact synchronization. It also includes mobile devic...

iMail

iMail is an email management platform, designed to help users maximize productivity and streamline their communications. It offers an easy-to-use interface and powerful features that allow users to send and receive emails, organize messages into folders, customize labels and filt...

Axigen

Axigen is an all-in-one messaging and collaboration solution that provides secure, reliable and feature-rich communication services. It is a powerful and secure messaging platform that helps businesses and organizations to manage their communication needs and increase their team ...

SophiMail

SophiMail is an app (or website) that provides users with a secure, reliable, and easy to use platform for backing up their emails, files, contacts, and other data. It is designed to be both secure and user-friendly, allowing users to quickly and easily access their email account...

Zarafa

Zarafa is an open source, collaborative software solution that provides an integrated mail, calendar, contacts, and groupware solution for businesses of all sizes. It enables users to collaborate and work together efficiently in a secure and easy-to-manage environment. The softwa...

Discontinued "Last year we published the announcement that Zarafa customers could transition to Kopano. We also announced that Zarafa would not be continued after May 1, 2017. Most ZCP customers have moved to a Kopano subscription now."

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Atmail Email Server

Atmail Email Server is a powerful, secure, and reliable open source email server that provides comprehensive protection for your business or organization's email accounts. It enables users to quickly and easily access their emails with the help of its advanced webmail interface a...

Sanwhole Exchange

Sanwhole Exchange is a comprehensive office and productivity platform designed to help businesses and individual users streamline their workflow. The platform includes a suite of tools that enable users to manage their documents, collaborate with team members, and create presenta...

IceWarp

IceWarp is a comprehensive communication and collaboration platform that enables businesses of all sizes to manage their messaging, collaboration, and document storage needs in one place. It is a unified platform that offers a wide range of features, including email, instant mess...

HyperOffice Email Service

HyperOffice Email Service is a cloud-based email solution designed to empower businesses of all sizes to collaborate more effectively and securely. It offers a comprehensive set of features to help teams organize, manage and access their email accounts. It offers a single platfor...

OpenChange

OpenChange is a powerful and versatile open source office productivity suite that combines the features of popular office suites like Microsoft Office, OpenOffice, and LibreOffice. It offers both desktop and web-based applications, allowing users to work on their documents from a...

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