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Kiwi for Gmail vs Thunderbird Comparison (2026)

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Kiwi for Gmail

Thunderbird

83pts

Overview

Kiwi helps businesses collaborate on projects, view and monitor tasks, compose emails, and manage spreadsheets, presentations, documents, and more. Designed for Gmail and Google’s Office Suite, the application enables organizations to handle multiple email accounts in a unified billing portal.

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.