Products · Product
Thunderbird
Raised as a usability problem by 380 people on Hacker News over 18 years (2009–2026), in 159 threads.
No issue was raised by at least 3 people in 3 threads this year.
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- 12Settings are a mess, hard to navigateUnreviewed
Every issue, all time, most people first
Search misses too many results to be usefulUnreviewed
20092026- Search misses too many results to be useful2026-07-13
- Search doesn't work on mobile; on desktop must fiddle with filters to find messages2026-07-13
- Search UX is poor and results are unreliable, forcing users to grep or use external tools2025-07-10
Wide screens force choice between message pane and message listUnreviewed
20092026- Message list couldn't show rich content, so three-column layout didn't fit on wide screens2026-10-07
- Desktop email app feels clumsy and hard to use2025-04-02
- Controls and message list take most of the screen, leaving little room to read email2023-02-10
Too many features clutter the UI, hiding simple useUnreviewed
20092026- Duplicate search boxes and oversized top bar clutter the interface2026-10-30
- UI is too cluttered with features, hard to get simple use2026-04-09
- Search goes unfixed while the interface gets redesigned again and again2025-04-02
Quick filter searches the wrong field by defaultUnreviewed
20092026- Searching and filtering behave inconsistently, feeling like a mishmash2026-01-04
- Search and filter are separate, so users can't search then filter the same results2025-07-13
- Fuzzy search misses exact matches, forcing users to fall back on date filter2023-05-10
Inconsistent font sizes after update are unusable for low-vision usersUnreviewed
20092026- Incoming emails show inconsistent font sizes, and fixing it requires hidden per-language settings2023-07-13
- Font sizes inconsistent after update, leaving a mishmash on screen, unusable for low-vision users2022-02-27
- Can't get a consistent email font size; minimum font setting has no effect2021-03-23
Users struggle with the transition from other mail appsUnreviewed
20092026- Redesigned UI since version 115 is cluttered, laggy, and makes routine email tasks harder2025-07-08
- Interface looks outdated and is hard to use, driving users to other mail apps2023-07-13
- Frequent UI redesigns force users to relearn how to read and write email2023-02-10
Search results default to a view users must switch fromUnreviewed
20092026- Search results default to a view the user doesn't want, forcing a manual switch to list2025-07-16
- Normal search is clumsy; the quick search is preferred for keeping the view sane2023-10-24
- No preference to choose list or verbose search results, so switching is manual and inefficient2023-07-10
Compose window is hard to find after clicking awayUnreviewed
20092026- Compose window is hard to find again after clicking away from it2024-05-17
- Attach button moved to the other side of the compose window, which was annoying2023-02-09
- Switching compose mode requires copying, discarding, and retyping the message2021-01-12
New messages badge is hard to read after folder compactingUnreviewed
20092026- Messages regularly break and must be re-downloaded via repair folder2025-07-10
- After compacting a folder, it disappears until restart, and the new messages badge is hard to read2022-04-09
- Shows unread messages that were already read; needs manual folder clicking to refresh2021-11-11
Composing an email opens multiple separate windows in a tabbed appUnreviewed
20092026- Must open and close a separate window to review an event, unlike email tabs2022-11-09
- Users can't tell why emails open in tabs, so they think the computer is broken2018-01-17
- Writing and sending an email opens multiple separate windows, which is awkward in a tabbed app2015-03-01
Bottom search bar searches everywhere instead of current folderUnreviewed
20092026- Two search bars behave inconsistently; bottom one searches everywhere instead of current folder2026-04-09
- Global and inbox search work poorly; users must find a hidden folder-level search instead2023-02-09
- Two convoluted search interfaces, one for in-folder and one for all-folder search2012-07-07
Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.
The newest 50 complaints
- Duplicate search boxes and oversized top bar clutter the interface2026-10-30
- Searching for a setting takes minutes; defaults make no sense, so users must hunt2026-10-15
- Saved searches don't offer the search messages option, forcing users to re-enter settings2026-10-15
- Search ignores non-Latin characters so emails with them can't be found2026-10-14
- Search never finds anything, so the user can't locate their emails2026-10-13
- Message list couldn't show rich content, so three-column layout didn't fit on wide screens2026-10-07
- Interface feels distracting and grating to use, though functional2026-10-07
- UI feels bloated, slow and confusing to use2026-10-07
- Dialogs show maximize, menu and close buttons that look fake, so users can't tell what's real2026-08-15
- Settings are a horrible mess, hard to navigate2026-07-13
- Search doesn't work on mobile; on desktop must fiddle with filters to find messages2026-07-13
- Search misses too many results to be useful2026-07-13
- Opening a thread opens many tabs, making message flow hard to follow2026-06-08
- Cannot change keyboard shortcuts, making the app unusable for the commenter2026-06-04
- Scrolling through months of the calendar with a trackpad is awkward and unpleasant2026-06-03
- Hard to find how to donate anonymously; had to find bank details via search2026-04-11
- Importing a batch of .eml files took 15 minutes of workarounds for a new user2026-04-09
- Reply button on newsgroup posts emails the author instead of posting a response2026-04-09
- Configuration interface is so confusing users can't tell head from tail2026-04-09
- UI is too cluttered with features, hard to get simple use2026-04-09
- Profiles can't be moved between computers, so each install becomes a unique mess2026-04-09
- Each major update changes configuration, layout and workflows, and text-only mail is hard to set up2026-04-09
- Plain text editor is primitive, with ugly chrome and messy line wrapping around quotes2026-04-09
- Thunderbird is more annoying and less convenient to use than before2026-04-09
- Two search bars behave inconsistently; bottom one searches everywhere instead of current folder2026-04-09
- Breaking changes and broken extensions stop working, and older profiles can't be reverted2026-04-09
- UI overhaul made the client bloated, slow, and has broken defaults2026-04-09
- Cannot delete or rename an accidentally created archive folder; it keeps coming back2026-04-09
- Folder view settings like threading and sort order reset after upgrades, despite being set repeatedly2026-04-09
- Pressing back on donation page redirects to email-collection pestering page2026-04-09
- Interface is poorly designed and hard to work with2026-04-09
- Back button function is taken over, a dark pattern that changes what users expect2026-04-09
- Modern redesign has excessive white space and workflows hostile to power users2026-04-09
- Indexing is extremely slow and CPU intensive, making the app sluggish2026-03-14
- Searching and filtering behave inconsistently, feeling like a mishmash2026-01-04
- Throws a general error and makes user retype password on each retry2025-11-20
- Constant UI changes break muscle memory; scroll bars vanish and buttons moved to top2025-10-08
- Can't disable tabs entirely in the interface2025-07-17
- Search results default to a view the user doesn't want, forcing a manual switch to list2025-07-16
- Advanced search is hidden behind a weird menu while the main search bar offers only basic text search2025-07-16
- UI feels clunky and awkward to use, and the redesign keeps the awkwardness2025-07-16
- Visible tabs waste screen space and clutter the window when only needed occasionally2025-07-16
- Constantly re-downloads mail, making it very slow and blocking folder clicks with errors2025-07-16
- Search always opens results on a separate tab, so user cannot search and stay on main tab2025-07-14
- Search and filter are separate, so users can't search then filter the same results2025-07-13
- Two separate search and filter boxes are confusing and waste screen space2025-07-13
- Two separate search boxes are redundant and confusing, when one box could do both jobs2025-07-12
- Feels clunky and awkward to use, and has never outgrown that2025-07-12
- Search misses emails with word variants and ranks results poorly2025-07-10
- Profile import is flaky and fails for large profiles, so syncing across machines is hard2025-07-10