Why hackers moved from Outlook Express to Thunderbird

1 hacker described this switch in public comments. Their words, with links to the originals.

Outlook Express 0 hackers criticize it
→
Thunderbird 1 hacker recommends it

What hackers said about the move

“I use Thunderbird from the beginning when it was still named Firebird (I switched from Outlook Express).”
Skywalker13, 2026-04-09original comment ↗

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Outlook Express vs Thunderbird

Outlook ExpressThunderbird
Hackers who recommend01
Hackers who criticize01
Moved away from it11
Moved to it01

Counts are distinct hackers in the sampled comments, not market share.

Criticism of Outlook Express

No further criticism of Outlook Express captured yet.

Praise for Thunderbird

No further praise for Thunderbird captured yet.