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eM Client vs Thunderbird Comparison (2026)

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eM Client

Thunderbird

Overview

eM Client is a full-featured email client with a modern and easy to use interface. eM Client offers calendar, tasks, contacts, notes and chat. The app supports email archive, message encryption, translation of emails, mail-tracking detection, mass mail, snooze email, cloud attachments and more.

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.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

34.95

One-time payment

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

Free

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.2

188

Value for money

Ease of use

Features

Customer support

66%

would recommend this app

4.4

160

Value for money

Ease of use

Features

Customer support

71%

would recommend this app

Pros

“so I did find it functions faster and smoother with multiple files and large data files.”

Tom L.

sales and marketing manager

“eM client was still an outlook like environment but with less of the bloat”

Tom L.

sales and marketing manager

“a nice lite version of microsoft outlook. ”

Tom L.

sales and marketing manager

Pros

“The calendar integration works smoothly, and features like filters, folders, and tags make daily email management efficient.”

Sven S.

Prokurist

“We use it to manage all our work emails in a fully secure environment.”

Osvaldo B.

Cinema operator

“My favorite thing about Thunderbird is this it works with Protonmail which is my preferred email service”

Jeffrey F.

Owner

Cons

“Beginning in January 2024, I started reporting a failure of emclient (for Windows) to be able to send emails with large (3MB or more) attachments. ”

Dean W.

President

“I get too many e-mails from spam people but I guess it's not eM Client's problem.”

Omer D.

Medical Translator

“Initially, emclient support replied and asked very low level questions to determine how I was using emClient. When it became obvious that I knew more than their support staff, they stopped responding to my requests for help. ”

Dean W.

President

Cons

“Sometimes it is difficult to find the way to access some of its features.”