MONTHLY: Thunderbird Desktop — Support Spike Report

Generated 2024-08 … 2026-07 · monthly grain · trailing 24 months · 28852 questions · no AI (regex + traditional stats)

Volume: 28852 questions, 1202.2/month avg
Answered (non-creator): 22029/28852 (76%)
First-answer time (median): 3.3h (p25 0.9h / p75 11.7h)
Total volume trend: █▇█▇▇█▆▆▆▅▅▇▇▆▆▅▅▅▅▅▄▄▄▂

⏱ Reading spike timing: a spike dates when users piled in — a lagging signal, usually days after an incident’s onset and often near its resolution (e.g. the Jun 2023 Libero outage began ~Jun 14; the questions spiked Jun 19). Treat these as pain-cluster / triage signals, not real-time incident detection.

🚨 Engineering signal — version × cause spikes

Cause clusters over-represented in a specific Thunderbird version. The Signal column flags 🆕 new (cause never spiked before), ↗ spreading (known cause, new version), or ↻ recurring (chronic / seen before) — ranked new→spreading→recurring, then by lift. Click an ID to read it.

Signal	Lift	When	Version × Cause	Qs	Served	Trend	Example questions
🆕 new	3.9×	2026-06	v151 × m:spectrum	12	100% ans · 15.8h	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂█▁`	1585052 1585941 1586383 1586405 1586446 1586481 +6
🆕 new	3.1×	2026-02	v148 × m:yahooemail	9	100% ans · 2.5h	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄█▁▁▁▁`	1567691 1567818 1567871 1567897 1567998 1568124 +3
🆕 new	3.1×	2026-02	v148 × proto:oauth	5	100% ans · 4.4h	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄█▂▁▁▁`	1567488 1567691 1567818 1567961 1568282

📮 Cause-level spikes — provider / protocol / AV

Causes surging regardless of version vs a trailing month baseline — provider/ISP outages and protocol/AV issues. Not necessarily a Thunderbird bug, but worth a triage look. Ranked by magnitude.

Rise	When	Cause	Qs	Served	Baseline	Trend	Example questions
49.0×	2025-08	av:bitdefender	49	100% ans · 2.6h	1.0	`▁▂▁▁▁▃▁▁▁▁▁▁█▂▂▂▁▁▁▂▁▁▁▁`	1528472 1528498 1528506 1528543 1528577 1528582 +43
7.0×	2024-12	m:orange	14	⚠️ 50% ans · 0.6h	2.0	`▁▄▃▅█▇▅▄▂▃▃▅▄▃▃▃▃▁▃▃▂▁▄▁`	1476744 1477337 1477350 1477378 1477476 1477498 +8
6.8×	2025-01	av:bitdefender	17	88% ans · 3.4h	2.5	`▁▂▁▁▁▃▁▁▁▁▁▁█▂▂▂▁▁▁▂▁▁▁▁`	1482921 1484507 1484717 1485005 1485049 1485835 +11
6.0×	2025-08	m:btinternet	9	89% ans · 10.7h	1.5	`▄▆▄▄▅▄▆▂▃▂▃▂█▄▃▃▅▄▆▂▄▄▄▃`	1528543 1528732 1528856 1528919 1529008 1529260 +3
5.3×	2025-12	m:gmx	8	88% ans · 17.0h	1.5	`▄▁▂▃▅▃▂▂▁▁▁▁▂▃▂▁▅▂▃█▃▂▂▁`	1552704 1553040 1555220 1555687 1556443 1556657 +2
5.0×	2025-07	m:verizon	10	80% ans · 3.0h	2.0	`▇▃▃▅▅▂▃▂▂▁▄█▃▂▄▇▃▁▁▂▂▄▂▂`	1520698 1522140 1523889 1523914 1524787 1524985 +4
4.3×	2026-03	m:gmx	15	87% ans · 11.2h	3.5	`▄▁▂▃▅▃▂▂▁▁▁▁▂▃▂▁▅▂▃█▃▂▂▁`	1568896 1569586 1569730 1570170 1570366 1570603 +9
3.2×	2025-07	av:norton	8	75% ans · 2.1h	2.5	`▆▅▄▅▃█▃▄▂▂▂▆▅▃▃▂▂▂▂▂▂▃▂▂`	1521509 1521569 1522509 1523331 1523343 1523519 +2
3.1×	2024-08	av:defender	11	64% ans · 2.2h	3.5	`█▄▂▇▂▂▃▂▂▂▁▃▃▂▂▂▁▁▂▂▂▄▄▂`	1456877 1457294 1457557 1457806 1457949 1458157 +5
3.0×	2024-09	proto:oauth	66	82% ans · 1.7h	22.0	`▆█▆▄▄▄▂▃▃▂▂▃▃▂▃▃▂▃▃▅▂▃▂▂`	1461626 1462076 1462199 1462200 1462785 1462816 +60

📈 Trends

Top versions

Value	Total	Trend
v140	849	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▅▇█▇▄`
v150	410	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄█▁▁`
v151	327	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▆█▁`
v152	311	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██`
v149	310	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂█▂▁▁`
v148	238	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃█▁▁▁▁`

Top mail providers

Value	Total	Trend
m:gmail	2567	`███▇▇▇▆▆▆▅▄▅▆▆▅▅▅▅▄▅▄▄▃▂`
m:microsoftemail	2099	`▇██▆▅▅▅▄▄▃▃▄▄▄▅▄▄▄▄▄▃▄▃▂`
m:yahooemail	821	`▆▆▅▄▅▆▃▄▃▃▄▇▆▆▆▇▄▄▇█▅▆▄▃`
m:comcast	356	`▅▆▆▆▅▆▄▅▄▄▃▃█▄▄▆▅▂▃▃▅▄▄▂`
m:spectrum	288	`▆█▇▄▅▅▇▅▅▅▅▅▆▆▃▇▅▄▆▃▃██▂`
m:att	195	`▅▄▄▅██▅▃▃▅▃▇▇▃▂▄▆▃▃▅▃▂▂▁`

Top protocols

Value	Total	Trend
proto:imap	1970	`▇█▇▇██▇▅▅▅▄▆▆▅▆▅▄▅▄▅▃▅▄▃`
proto:smtp	1251	`▆█▇▇▅▇▅▅▅▅▄▅▇▅▄▄▃▅▅▅▃▄▃▂`
proto:pop	1250	`█▇▇▇▅▇▅▄▅▄▄▅▆▅▆▄▃▄▄▄▃▄▃▃`
proto:oauth	514	`▆█▆▄▄▄▂▃▃▂▂▃▃▂▃▃▂▃▃▅▂▃▂▂`
proto:caldav	101	`▆▅▆▆▅█▃▃▃▆▅▆▄▃▄▂▃▅▆▃▃▂▃▂`
proto:carddav	58	`▇▃▄▅▃▄▂▇▃▂▁▃█▂▃▃▂▂▄▅▄▂▂▁`

Top antivirus

Value	Total	Trend
av:bitdefender	116	`▁▂▁▁▁▃▁▁▁▁▁▁█▂▂▂▁▁▁▂▁▁▁▁`
av:norton	95	`▆▅▄▅▃█▃▄▂▂▂▆▅▃▃▂▂▂▂▂▂▃▂▂`
av:defender	61	`█▄▂▇▂▂▃▂▂▂▁▃▃▂▂▂▁▁▂▂▂▄▄▂`
av:avast	50	`▂▅▂▇▄▅█▄▅▂▁▅▁▁▄▇▂▅▂▂▇▄▄▄`
av:mcafee	31	`▁▁█▃▆▃▃▃▆█▃▃█▆█▁▁▁▃▃▆▆▃▁`
av:malwarebytes	22	`▆▆▃▆▁▃▁▁▃▁▁▆▃▁▃▃█▁▁▁▆▃▆▁`

OS mix (filter dimension)

Value	Total	Trend
os:windows	6454	`▃▂▃▃▂▃▂▂▂▂▂▃▃▂▃▂▂▅██▇▇▇▄`
os:linux	1195	`▅▆▆▆▅▆▅▃▄▅▄▃▅▅▄▄▄▆▇█▆▇▆▃`
os:macos	822	`▃▄▄▃▃▃▄▃▃▃▂▄▄▄▂▄▂▆▇█▆▆▅▄`
os:other	120	`▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▄▂▁▂▃▂`
os:android	84	`▂▁▂▁▁▂▂▂▂▁▂▃▃▁▂▂▁▇█▇█▅▃▅`

macOS releases (filter dimension)

Value	Total	Trend
macos:sequoia	155	`▁▃▅▆▅█▇▅▅▅▁▇▇▇▂▅▃▄▃▃▂▃▁▁`
macos:sonoma	69	`█▆▄▃▂▂▂▁▁▁▁▁▁▁▁▃▂▃▁▁▁▂▁▁`
macos:tahoe	48	`▁▁▁▁▁▁▁▁▁▁▁▁▁▆▅█▇▇▆▆▂▃▅▄`
macos:catalina	38	`▃▃▅▃▂▄▁▂▂▂▁█▆▄▂▂▁▂▁▂▂▂▁▁`
macos:monterey	30	`▃▆▅▅▅▅▅█▃▃▁▃▃▅▁▅▃▃▁▁▃▃▁▁`
macos:high_sierra	28	`▁▄█▄▂▁▇▂▁▇▁▂▂▂▁▂▂▄▁▁▁▁▄▁`

Notes: spikes detected at monthly grain (coarser grains catch slow-burn incidents a daily threshold misses — e.g. the March 2026 GMX provider outage). Volume / cause / OS trends span the full scraper history (2023-01+). Version×cause covers 2026-02 onward — the native thunderbird_version field (Kitsune PR #7443) is only populated from Feb 2026 (~27% → 85% by mid-2026), so earlier questions carry no version; cause-level spikes use all history. Thresholds calibrated on the post-backfill baseline. Full IDs per spike in PROJECT1/desktop-monthly-version-cause-spikes.csv (version×cause) and PROJECT1/desktop-monthly-single-spikes.csv (cause-level); full series in PROJECT1/desktop-monthly-rollup.csv.

Last updated: 2026-07-15 16:57 UTC