Thunderbird Android — Monthly Engineering Support Summary

June 2026 vs May 2026

For engineering: the support signals worth investigating this month vs last — flagged incidents, moving cause clusters, and release adoption. (Community/support-ops KPIs — answered & solved rates, response time — are a separate upcoming report.) Non-AI: regex + traditional stats.

Headline

	May 2026	June 2026	Change
Support questions (load)	47	46	▼ -1 (-2%)
Version × cause spikes flagged	0	0	▬ 0
— of which new regressions	0	0	▬ 0
Cause-level surges flagged	0	0	▬ 0

🚨 Incidents to investigate

⏱ 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.

No spikes flagged this month at current thresholds.

What moved

🆕 New cause clusters (first appearance ever)

Cause tags with no occurrence in any month before this one — a new entity or newly-matched pattern, worth a look.

Cause	Qs	Example questions
m:mailcom	1	1588039

Release adoption (version mix)

Release adoption (version mix)	May 2026	June 2026	Change
v140	3	1	▼ -2
v151	1	2	▲ +1
v152	0	2	▲ +2
v150	1	0	▼ -1

Operating-system mix

Operating-system mix	May 2026	June 2026	Change
os:android	33	37	▲ +4 (+12%)
os:windows	8	5	▼ -3
os:other	2	1	▼ -1

Topic mix

Topic mix	May 2026	June 2026	Change
send-and-receive-email	13	16	▲ +3 (+23%)
email-and-messaging	10	6	▼ -4 (-40%)
customization	4	3	▼ -1
connectivity	4	2	▼ -2
accessibility	3	2	▼ -1
import-and-export-email	1	3	▲ +2

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Prototype engineering month-over-month summary · from Project 1 feature tables + spike detectors · June 2026 vs May 2026.

Last updated: 2026-07-06 16:44 UTC