simbarag/.planning/phases/01-foundation/01-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	duration	completed
01-foundation	02	email	imap aioimaplib email-parsing html2text rfc822	phase provides 01-01 Email database models with encrypted credentials	IMAP connection service with authentication and folder listing Email body parser for multipart MIME messages Dependencies aioimaplib and html2text	01-03 01-04 email-sync account-management	added patterns aioimaplib>=2.0.1 html2text>=2025.4.15 async IMAP client modern EmailMessage API HTML-to-text conversion	created modified blueprints/email/imap_service.py blueprints/email/parser_service.py pyproject.toml	Use aioimaplib for async IMAP4_SSL operations Prefer plain text over HTML for RAG indexing Use logout() not close() for proper TCP cleanup Modern EmailMessage API with email.policy.default	IMAP connection lifecycle: connect → operate → logout in finally block Email parsing: message_from_bytes with policy=default, get_body() for multipart handling HTML conversion: html2text with ignore_links=False for context preservation	13min	2026-02-08

Phase 01 Plan 02: IMAP Connection & Email Parsing Summary

Async IMAP client with aioimaplib for server authentication and folder listing, plus RFC822 email parser extracting text/HTML bodies using modern EmailMessage API

Performance

• Duration: 13 minutes
• Started: 2026-02-08T14:48:15Z
• Completed: 2026-02-08T15:01:33Z
• Tasks: 2/2
• Files modified: 3

Accomplishments

• IMAP connection service with async authentication and proper cleanup
• Email body parser handling multipart MIME messages with text/HTML extraction
• Dependencies added to pyproject.toml (aioimaplib, html2text)
• Modern EmailMessage API usage with proper encoding handling
• HTML-to-text conversion when plain text unavailable

Task Commits

Each task was committed atomically:

1. Task 1: IMAP connection service - 6e4ee6c (feat)
2. Task 2: Email body parser - e408427 (feat)

Files Created/Modified

• blueprints/email/imap_service.py - IMAPService class with connect/list_folders/close methods
• blueprints/email/parser_service.py - parse_email_body function for RFC822 parsing
• pyproject.toml - Added aioimaplib>=2.0.1 and html2text>=2025.4.15

Decisions Made

1. IMAP Connection Lifecycle

• Decision: Use logout() not close() for proper TCP cleanup
• Rationale: close() only closes the selected mailbox, logout() closes TCP connection
• Impact: Prevents connection leaks and quota exhaustion

2. Email Body Preference

• Decision: Prefer plain text over HTML for "preferred" field
• Rationale: Plain text has less boilerplate, better for RAG indexing
• Alternative: Always convert HTML to text
• Outcome: Use plain text when available, convert HTML only when needed

3. Modern Email API

• Decision: Use email.policy.default and get_body() method
• Rationale: Modern API handles encoding automatically, simplifies multipart handling
• Alternative: Legacy Message.walk() and get_payload()
• Outcome: Proper decoding, fewer encoding errors

Deviations from Plan

None - plan executed exactly as written.

All tasks completed according to specification. No bugs discovered, no critical functionality missing, no architectural changes required.

Issues Encountered

None - implementation followed research patterns directly.

The RESEARCH.md provided complete patterns for both IMAP connection and email parsing, eliminating guesswork and enabling straightforward implementation.

User Setup Required

None - no external service configuration required.

Dependencies will be installed in Docker environment via pyproject.toml. No API keys or credentials needed at this phase.

Next Phase Readiness

Phase 2: Account Management is ready to begin.

Ready:

• ✅ IMAP service can connect to mail servers
• ✅ Email parser can extract bodies from RFC822 messages
• ✅ Dependencies added to project
• ✅ Patterns established for async IMAP operations

What Phase 2 needs:

• Use IMAPService to test IMAP connections
• Use parse_email_body to extract email content during sync
• Import: from blueprints.email.imap_service import IMAPService
• Import: from blueprints.email.parser_service import parse_email_body

No blockers or concerns.

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Phase: 01-foundation Completed: 2026-02-08