eM Client vs Proton Mail

Zoho Mail

Mailbird

Thunderbird

PDFEncrypt

Tuta Mail

Abnormal AI

Compare eM Client and Proton Mail based on features, pricing, verified reviews, integrations & more on GetApp. Find out which software is best for your business in 2026.

Thunderbird is an on-premise email management platform designed to help businesses securely handle, search, organize, archive, and filter email conversations from within a unified platform. The Mail Account Setup Wizard allows professionals to set up existing user accounts with information, such as email address, name, and password.


Mailbird is a desktop email management application that helps businesses of all sizes synchronize messages from multiple accounts in a centralized inbox and connect the platform with LinkedIn. Mailbird's speed-reading functionality lets employees read at a fast pace to increase email productivity.

Zoho Mail, a business-oriented and privacy-guaranteed email service, is your single email solution. Zoho Mail also comes bundled with modern collaborative tools and a suite of apps to meet your business needs. Migrate now and get your unique email address with Zoho Mail.


eM Client is a powerful email client for Windows and macOS with a clean and easy-to-use interface. It also offers features for calendars, tasks, contacts, notes and chat.

eM Client covers all professional communication needs
for any team or enterprise and easily connects to any email service.

Address Book

Alerts/Notifications

Appointment Management

Archiving & Retention

Availability Management

Calendar Management

Calendar Sync

Calendar/Reminder System

Chat/Messaging

Collaboration Tools

Color Codes/Icons

Communication Management

Contact Database

Contact Management

Customizable Branding

Customizable Fields

Customizable Forms

Customizable Templates

Data Import/Export

Data Recovery

Deduplication

Drag & Drop

Email Distribution

Email Management

Email Monitoring

Email Reminders

Email Templates

Employee Management

Encryption

Event Calendar

Event Management

Event Scheduling

File Sharing

File Transfer

Filtering

Inbox Management

Interaction Tracking

Member Database

Productivity Tools

Real-Time Chat

Real-Time Updates

Reminders

Response Management

Scheduling

Search/Filter

Shared Inboxes

Signature Management

Task Editing

Task Management

Task Progress Tracking

Task Scheduling

Task Tagging

Team Calendars

Template Management

Templates

Third-Party Integrations

Whitelisting/Blacklisting

eM Client

Windows

Web Administrator

The greatest advantage is that you can purchase a lifetime license at a bargain and receive all future updates for free.

Marketing Mgr.

No other software that I use causes loss of data except emclient. Even after recovering to a prior backup ,software no longer queued new emails to respective accounts.

Director of Corporate Relations

I have found eM Client to be the perfect solution for my needs. I am able to access my saved messages and folders without having to pull them from the cloud.

Creative Director

I organised my folders and we so excited to have a creative email management program.

Partner

Whilst I have not yet lost any data, the checking is problematic if I am in a rush and for example only turned on the laptop to do a quick e-mail.

Tech support consistently blames the hosting company and vica versa rather work with the hosting company to fix problems.

I liked that eM was a kind of "middle of the road" (just the right amount) of functionality/features AND they have a nicer GUI than Thunderbird (more modern).

Either have discounts or don't, but that's a strange carrot to wave and then pull back. Then there is the issue of waiting weeks for confusing answers that need clarification.

Co-owner / Operator

It's simple and the free version is good for our purposes.

Chair of Trustees

One of our users has a strong aversion to webmail. EM Client is a good option for a traditional email client.

Founder

I liked the clean design and also the integration of calendar.

Graphic Designer

The simple and clean UI helps me focus on priority emails while staying organized and efficient.

Little problem or confusion I had with the "search" function. I think it did not work 100% well across all my accounts.

Has every features that you need to manage all mail, task, contact, notes, calendar and it's perfect with icewarp server because it's very well integrated.

Also I find the email interface to be much more user friendly than any of the cloud-based services.

But, I will say this: even though the issues wasn't resolved in my case, the customer support and moderators on their forum were all very helpful and responded pretty quickly.

Contributor

Still, I think the client is fantastic enough that I would want to purchase it, that is, until I got to their licensing policy.

Very much cheaper than Outlook but looks and feels familiar so is easy to use. We move to eM Client from Thunderbird and like the integration of eM Client with Google Contacts very helpful.

eM Client screenshot: eM Client - Contacts in People view

eM Client screenshot: eM Client - Calendar Week view

eM Client screenshot: eM Client - Mail

eM Client screenshot: eM Client - Tasks in Details view inspired by Getting Things Done method

eM Client screenshot: eM Client - Chat

eM Client screenshot: eM Client - Notes

eM Client screenshot: eM Client - various themes (custom themes and visual Theme Editor are available)

eM Client screenshot: eM Client - Contact cards overview

Freelancers

Large Enterprises

Mid Size Business

Non Profit

Public Administrations

Small Business

Businesses can use the Tutanota app for Android and iOS to secure mailbox and calendars with automatic encryption. It comes with a GUI, a dark theme, instant push notifications, full-text search, swipe gestures and more.

PDFEncrypt is a free, open source Windows app for password-protecting (encrypting) PDF files.

Abnormal provides total protection against the widest range of attacks including phishing, malware, ransomware, social engineering, executive impersonation, supply chain compromise, internal account compromise, spam, and graymail.

ProtonMail is a web-based email management platform that helps businesses securely transmit encrypted emails between users both inside and outside of the organisation.

Access Controls/Permissions

Activity Dashboard

Activity Tracking

Authentication

Compliance Management

Credential Management

Data Security

Email Attachment Protection

Email Filtering

HIPAA Compliant

Remote Access/Control

Reporting/Analytics

Secure Login

Spam Blocker

SSL Security

Threat Protection

Threat Response

Two-Factor Authentication

User Management

Proton Mail

Android

Linux

Web-based

iPad

iPhone

Its simple, easy to use, easy to connect domains to and manage. It really is the best solution for a secure email out there.

Administrator and owner

Protonmail Bridge often randomly logs out, and then it is a bit of a pain to log back in and sync everything up. The spam filter is sometimes too aggressive and hides legitimate mail.

Artist in Residence

I love that there is no spam and for this reason it is also a good email for children. Messages can be encrypted between users which is helpful and fun aswell.

Principal Investigator

I am absolutely thrilled with the Proton range of services and can rest easy knowing my clients data is safe.

IT Advisor

The free version is very powerful, you have everything you need. However, in the pro version you have more storage space, the mail is faster and the technical support works great.

President

It was very difficult to find concrete sending limits until I had spent the time uploading my newsletter email list. The paid service connection to VPN was confusing.

Life Coach

Of course there is a written help guide and it is also clear and, well, helpful.

Student

Better and secure platform for sending emails with end to end encryption. It having vpn service only for subscription plans only.

Fullstack Developer

The Catch-All Email is very useful when someone mistype the email addresses. The folders and tags are handy to better organize the received emails.

Digital Marketer

Other encrypted emails such as Tutanota are able to search the content of the emails as well. This is most inconvenient.

IT Expert

I cherish my privacy and ProtonMail helps add an extra layer of protection.

Your data on it is encrypted and very hard to breach. The registration process was extremely quick and painless.

Personal 

This is an alternative of Google mail and yahoo and an easy to use software, ehich you can use with ease in most of your online services.

Principal

But when you run into some difficult, you discover there is NO phone support. When you file a "bug report" you get a response, and usually a tech will response via email in 24 hours.

Owner

My experience has been 100% positive, I integrated my proton account with my custom domain and use it as my business email platform as well as for my personal emails.

After the trial I payes for a subscription and integrated the mail functions with my domain name. I also got ProtonDrive, ProtonVPN and the ProtonCalendar, all secure.

Project Manager

They have paid subscription,however the free version should be enough in itself for most people. You can import your signature or create it on ProtonMail.

They have recently expanded by adding storage to protonmail, which was long needed. Their customer service that used to take ages is getting a bit faster as well.

eM Client vs Proton Mail Comparison (2026)

eM Client

Proton Mail

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives