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JMAP Implementation - Quick Reference Index#

📚 Documentation#

Document Purpose Lines
README.md User guide with examples 450
DESIGN.md Architecture and design decisions 800
IMPLEMENTATION_SUMMARY.md Project completion status 350
PARSER_IMPLEMENTATION_GUIDE.md Guide for completing parsers 500
INDEX.md This file - quick reference -

🏗️ Project Structure#

jmap/
├── jmap-core/          Core protocol (RFC 8620)
├── jmap-mail/          Mail extension (RFC 8621)
├── jmap-client/        HTTP client
├── test/               Test suite + 50 JSON files
└── spec/               RFC specifications

📦 Packages#

Package Purpose Modules Status
jmap-core Core JMAP (RFC 8620) 13 ✅ Types complete, 🚧 Parsers TODO
jmap-mail Mail extension (RFC 8621) 8 ✅ Types complete, 🚧 Parsers TODO
jmap-client HTTP client 2 ✅ Stubs complete
jmap-test Test suite 1 ✅ Basic harness

🔧 Core Modules (jmap-core/)#

Module Lines Purpose Key Types
jmap_error.ml 223 Error handling error_level, method_error, set_error
jmap_id.ml 47 ID type t (abstract)
jmap_primitives.ml 121 Basic types Int53, UnsignedInt, Date, UTCDate
jmap_capability.ml 62 Capabilities CoreCapability, MailCapability
jmap_filter.ml 72 Query filters operator, t (recursive)
jmap_comparator.ml 50 Sort comparators t
jmap_standard_methods.ml 189 Standard methods Get, Changes, Set, Copy, Query, QueryChanges, Echo
jmap_invocation.ml 159 Type-safe dispatch method_witness (GADT), invocation
jmap_request.ml 54 Request object t
jmap_response.ml 55 Response object t
jmap_session.ml 77 Session/Account t, Account.t
jmap_push.ml 79 Push notifications StateChange, PushSubscription
jmap_binary.ml 42 Binary ops Upload, BlobCopy
jmap_parser.ml 105 Parser utilities Helpers module

Total: ~1,335 lines

📧 Mail Modules (jmap-mail/)#

Module Lines Purpose Key Types Methods
jmap_mailbox.ml 206 Mailboxes t, Rights, Filter Get, Changes, Query, QueryChanges, Set
jmap_thread.ml 84 Thread grouping t Get
jmap_email.ml 421 Email messages t, EmailAddress, BodyPart, BodyValue, Filter Get, Changes, Query, QueryChanges, Set, Copy, Import, Parse
jmap_identity.ml 126 Identities t Get, Changes, Set
jmap_email_submission.ml 322 Email sending t, Envelope, Address, DeliveryStatus, Filter Get, Changes, Query, QueryChanges, Set
jmap_vacation_response.ml 133 Out-of-office t (singleton) Get, Set
jmap_search_snippet.ml 102 Search highlights t Get
jmap_mail_parser.ml 240 Mail parsers N/A (parsers) 50+ functions

Total: ~1,634 lines

🌐 Client Modules (jmap-client/)#

Module Lines Purpose
jmap_client.ml 76 High-level client
jmap_connection.ml 90 Connection management

Total: ~166 lines

🧪 Test Files (test/data/)#

Core Protocol Tests (22 files)#

Category Files Purpose
Echo 2 Echo method testing
Get 2 Object retrieval
Changes 2 Delta synchronization
Set (Create) 2 Object creation
Set (Update) 2 Object updates with PatchObject
Set (Destroy) 2 Object deletion
Copy 2 Cross-account copy
Query 2 Querying with filters
QueryChanges 2 Query delta sync
Session 1 Session object
Push 2 Push notifications
Errors 1 Error responses

Mail Protocol Tests (28 files)#

Type Files Purpose
Mailbox 6 Mailbox hierarchy, Get/Query/Set
Thread 2 Thread grouping
Email (Basic) 2 Basic email properties
Email (Full) 2 Complete MIME structure
Email Query 2 Email search
Email Set 2 Email creation/update
Email Import 2 Import from blobs
Email Parse 2 Parse without importing
SearchSnippet 2 Search highlighting
Identity 2 Identity management
EmailSubmission 2 Email sending
VacationResponse 2 Out-of-office

Total: 50 files, ~224KB

🔑 Key Types Reference#

Core Types#

(* IDs and Primitives *)
Jmap_id.t                           (* 1-255 char string *)
Jmap_primitives.Int53.t             (* -2^53+1 to 2^53-1 *)
Jmap_primitives.UnsignedInt.t      (* 0 to 2^53-1 *)
Jmap_primitives.Date.t             (* RFC 3339 date-time *)
Jmap_primitives.UTCDate.t          (* RFC 3339 with Z *)

(* Protocol *)
Jmap_request.t                      (* API request *)
Jmap_response.t                     (* API response *)
Jmap_session.t                      (* Session info *)
Jmap_invocation.invocation         (* Method call *)

(* Queries *)
Jmap_filter.t                       (* AND/OR/NOT filters *)
Jmap_comparator.t                   (* Sort comparator *)

Mail Types#

(* Objects *)
Jmap_mailbox.t                      (* Mailbox (11 props) *)
Jmap_thread.t                       (* Thread (2 props) *)
Jmap_email.t                        (* Email (24 props) *)
Jmap_identity.t                     (* Identity (8 props) *)
Jmap_email_submission.t             (* Submission (10 props) *)
Jmap_vacation_response.t            (* Vacation (7 props) *)
Jmap_search_snippet.t               (* Snippet (3 props) *)

(* Nested Types *)
Jmap_mailbox.Rights.t               (* 9 permission flags *)
Jmap_email.EmailAddress.t           (* name, email *)
Jmap_email.BodyPart.t               (* Recursive MIME *)
Jmap_email_submission.Envelope.t    (* SMTP envelope *)

Method Types#

(* Standard Methods *)
'a Jmap_standard_methods.Get.request
'a Jmap_standard_methods.Get.response
Jmap_standard_methods.Changes.request
Jmap_standard_methods.Changes.response
'a Jmap_standard_methods.Set.request
'a Jmap_standard_methods.Set.response
'a Jmap_standard_methods.Copy.request
'a Jmap_standard_methods.Copy.response
'f Jmap_standard_methods.Query.request
Jmap_standard_methods.Query.response
'f Jmap_standard_methods.QueryChanges.request
Jmap_standard_methods.QueryChanges.response
Jmap_standard_methods.Echo.t

(* Extended Methods *)
Jmap_email.Import.request
Jmap_email.Import.response
Jmap_email.Parse.request
Jmap_email.Parse.response

📖 RFC References#

Spec Title Coverage
RFC 8620 JMAP Core ✅ Complete
RFC 8621 JMAP for Mail ✅ Complete
RFC 3339 Date/Time ✅ Date, UTCDate
RFC 5322 Email Format ✅ Email parsing
RFC 6154 Mailbox Roles ✅ Mailbox.Role

🎯 Implementation Status#

✅ Complete#

  • Type definitions (100% complete)
  • Module structure
  • Documentation
  • Test JSON files
  • Error handling types
  • GADT method dispatch
  • Client stubs

🚧 TODO (Marked in code)#

  • JSON parsing (of_json functions)
  • JSON serialization (to_json functions)
  • HTTP client completion
  • Test suite expansion

🚀 Quick Start#

For Users#

# Install
opam install jmap-core jmap-mail jmap-client

# Use
open Jmap_core
open Jmap_mail
let client = Jmap_client.create ~session_url:"..." ()

For Contributors#

# Clone and build
cd jmap
dune build

# Implement parsers (see PARSER_IMPLEMENTATION_GUIDE.md)
# Start with: jmap-core/jmap_comparator.ml

# Test
dune test

# Validate
dune build @check

📊 Statistics#

Metric Count
Total OCaml lines 3,500+
Modules 23
Submodules 45+
Type definitions 100+
JSON test files 50
Test data size 224KB
Documentation 2,200+ lines
RFC sections covered 100+

🔗 Links#

💡 Common Tasks#

Task Command
Build dune build
Test dune test
Install dune install
Clean dune clean
Format dune fmt
Check types dune build @check
Generate docs dune build @doc

📝 Code Examples#

See README.md for:

  • Session fetching
  • Querying mailboxes
  • Searching emails
  • Creating emails
  • Complex filters
  • Uploading attachments

🆘 Getting Help#

  1. Check test JSON files for expected structure
  2. Read PARSER_IMPLEMENTATION_GUIDE.md
  3. Review existing parsers (jmap_id.ml, jmap_primitives.ml)
  4. Look at type definitions in module interfaces
  5. Use Jmap_parser.Helpers utilities

🎓 Learning Path#

  1. Read DESIGN.md - Understand architecture
  2. Review README.md - Learn usage patterns
  3. Study test files - See JSON structure
  4. Read PARSER_IMPLEMENTATION_GUIDE.md - Implementation details
  5. Start coding - Begin with simple parsers

Last Updated: 2025 Version: 0.1.0 Status: Types complete, parsers TODO