Choose Mimestream if you need
- iOS. We haven't found it on Thunderbird's website.
Side by side, from each tool's own website. A tool's rating shows once it has 3 reviews.
From each tool's own website, checked on the dates below, and from published reviews.
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.

Nobody has reviewed Mimestream yet. Its rating shows once it has 3 reviews.
Review Mimestream
Nobody has reviewed Thunderbird yet. Its rating shows once it has 3 reviews.
Review ThunderbirdFrom the platforms and integrations each website lists.
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Mimestream and Thunderbird yet.
Your review makes this comparison better for the next person. Review Mimestream or review Thunderbird.
Mimestream: Facts from mimestream.com, checked November 14, 2026. Sources: mimestream.com, mimestream.com/pricing, portal.productboard.com/mimestream/1-mimestream-roadmap/tabs/4-planned.
Thunderbird: Facts from thunderbird.net, checked November 14, 2026. Sources: thunderbird.net/en-US, blog.thunderbird.net.
Prices change, so confirm on their sites.