swap_horiz HCL Domino Alternatives

1

Google Workspace Gmail

Google Workspace Gmail offers business-class email hosting using a Google account. It allows users to send and receive e...

Business Cloud Google Collaboration

9.4 Excellent

2

Mailgun

Mailgun is a developer-focused email service that specializes in transactional email delivery. It is built for developer...

API Transactional Email Transactional Cloud Based

8.8 Great

3

Tuta Mail

Tuta Mail provides cloud-based email hosting with a strong focus on security and user privacy. Based in Germany, it util...

Cloud Privacy Germany Encrypted

8.5 Great

4

Microsoft Exchange Server

Microsoft Exchange Server is a server platform providing email hosting solutions primarily for businesses. It facilitate...

Server Enterprise Microsoft On Premise

8.4 Great

5

Outlook.com

Outlook.com provides cloud-based email hosting through Microsoft. It’s a free webmail service commonly used by consumers...

Free Cloud Microsoft Consumer

8.2 Great

6

Migadu

Migadu provides secure email hosting solutions tailored for businesses and developers. Based in Switzerland, it enables...

Business Switzerland Developer Custom Domain

8.2 Great

7

Stalwart Mail Server

Stalwart is an open-source mail server software designed for reliable and secure email hosting, emphasizing privacy and...

Open Source Self Hosted SMTP Mail Server

7.6 Good

8

Kolab Now

Kolab Now is a secure, privacy-focused email and groupware hosting service operated by Kolab Systems AG and based in Swi...

Privacy Swiss Groupware Custom Domain

7.2 Good

9

MDaemon Email Server

MDaemon Email Server is an on-premise mail server application developed by MDaemon Technologies, primarily designed for...

Business Self Hosted Windows Mail Server

7.1 Good

10

IceWarp

IceWarp is a business communication and collaboration software platform built around email, calendars, contacts, messagi...

Business Collaboration Groupware Hosted Email

6.9 Fair

11

Kerio Connect

Kerio Connect is a cross-platform mail server and groupware solution developed for small and medium-sized businesses. Th...

Business Self Hosted Groupware Mail Server

6.9 Fair

12

SmarterMail

SmarterMail is a commercial email and collaboration server developed by SmarterTools for organizations and hosting provi...

Business Self Hosted Groupware Windows

6.8 Fair

13

hMailServer

hMailServer is a free, open-source email server for Microsoft Windows. It supports standard mail protocols including SMT...

Free Legacy Self Hosted Windows

6.8 Fair

14

Kopano Groupware

Kopano Groupware is a suite of collaborative tools, including email, calendaring, and contact management, offered as an...

Business Open Source Groupware Mail Server

6.8 Fair

15

Axigen Mail Server

Axigen Mail Server is a commercial email-server and groupware platform for businesses, service providers, and managed-se...

Business Self Hosted Linux Groupware

6.7 Fair

16

OpenText GroupWise

OpenText GroupWise is an enterprise collaboration and email platform offering secure messaging, calendaring, and task ma...

Enterprise Groupware Mail Server Opentext

6.7 Fair

17

Oracle Communications Messaging Server

Oracle Communications Messaging Server is a standards-based Internet messaging server designed for high-capacity email h...

Enterprise Oracle Mail Server On Prem

6.5 Fair

18

CommuniGate Pro

CommuniGate Pro is an enterprise-grade unified communications platform offering email hosting alongside features like in...

Business Legacy Self Hosted Groupware

6.4 Fair

19

MailEnable

MailEnable is commercial mail-server software for Microsoft Windows, developed for organizations and hosting providers t...

Business Self Hosted Windows Mail Server

6.2 Fair

20

Zimbra Community Edition

Zimbra Community Edition is a self-hosted email hosting solution built on open source software. This enterprise-grade pl...

Free Collaboration Community Enterprise

4.5 Poor