MailWise — Your Team's Email Memory

Stop re-investigating issues your team already solved. MailWise turns your email threads into a searchable knowledge base — index thousands of EML files locally, tag expert engineers, and use RAG to instantly surface how similar issues were debugged and resolved in the past.

"Have we seen this before?" → MailWise searches 25,000+ emails in under a second and shows you exactly what your best engineers said about it.

What you get

Semantic search — not keyword matching, but meaning-based retrieval across your entire email archive:

$ mailwise search "calendar sync fails after folder migration" --show-body

  #1 [0.89] ★Expert  RE: Outlook calendar not syncing after mailbox move
     From: senior.engineer@example.com (2024-11-15)
     "The root cause is a stale folder-id cache. Clear HxCalendarSync
      and restart the sync service..."

  #2 [0.84]          RE: Sync failure post-migration — Mac clients
     From: support.lead@example.com (2024-10-22)
     "We've seen this pattern before. Check if the migration tool
      preserved the folder GUIDs..."

  #3 [0.81] ★Expert  RE: Calendar items disappearing after move
     From: senior.engineer@example.com (2024-09-08)
     "This is the same class of bug as CASE-4521. The fix is..."

RAG-powered analysis — Claude reads the most relevant past threads and synthesizes debugging guidance:

$ mailwise analyze "User reports calendar events vanish after moving to a new folder"

  Based on 5 similar past issues, here's what your team has found:
  ● Root cause pattern: stale folder-id cache after migration (3 of 5 cases)
  ● Recommended first step: check HxCalendarSync logs for GUID mismatch
  ● Expert consensus: clearing the sync cache resolves ~80% of these cases
  ● Edge case: if GUIDs were not preserved during migration, a full re-sync is needed

Get started in 3 steps

pip install mailwise        # 1. Install from PyPI
mailwise init               # 2. Interactive setup wizard — creates config, sets directories
mailwise index              # 3. Index your EML files (incremental, safe to re-run)

That's it. Now search with mailwise search "..." or get AI analysis with mailwise analyze "...".

Commands

Search for similar issues

mailwise search "describe the issue here" --show-body

• --show-body — show a preview of each matching message
• --expert-only — only show replies from expert engineers
• -k N — number of results (default: 10)

Deep analysis with RAG

mailwise analyze "paste full bug report or issue description here"

• -k N — number of similar issues to feed to Claude (default: 5)

Tip: Paste the FULL bug report — error codes, logs, environment details produce much better matches.

mailwise analyze "$(cat bug_report.txt)" -k 10

View a full email thread

mailwise show <EMAIL_ID>

Check index status

mailwise stats

Manage expert engineers

mailwise experts list
mailwise experts add engineer@company.com --name "Jane Doe"
mailwise experts remove engineer@company.com

Expert engineers' replies get ★Expert tags and boosted scores in search results.

Typical workflow

1. User describes an issue or pastes a bug report
2. Run mailwise search "..." --show-body to find similar past issues
3. If promising results found, run mailwise analyze "..." for deep RAG analysis
4. Use mailwise show <ID> to read full threads of interest
5. Summarize findings: root cause patterns, debugging steps, and next actions

Privacy & data handling

• Local-only commands (index, search, show, stats, experts): Everything runs on your machine. Embeddings generated locally via sentence-transformers. No data sent anywhere.
• External LLM command (analyze): Sends email excerpts to the Anthropic API via Claude Code CLI. Do not use on sensitive emails unless your org's data policy permits it.

Authentication

• The analyze command requires Claude Code CLI — run claude once to authenticate, or set ANTHROPIC_API_KEY
• No auth needed for local commands (index, search, show, stats, experts)