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1# Query 4: Complete Conversation Thread
2
3## Use Case Description
4Retrieve all emails in a specific conversation thread, showing the complete email exchange. This demonstrates thread-based operations and chronological conversation reconstruction.
5
6## Key JMAP Concepts Used
7- **Thread/get**: Retrieving thread objects to get email IDs
8- **Result reference chaining**: Using thread results to fetch emails
9- **Conversation sorting**: Ordering emails chronologically within thread
10- **Full email content**: Getting body values for complete thread view
11- **Multi-method requests**: Efficient batch operations
12
13## JMAP Request
14
15```json
16{
17 "using": ["urn:ietf:params:jmap:core", "urn:ietf:params:jmap:mail"],
18 "methodCalls": [
19 [
20 "Thread/get",
21 {
22 "accountId": "u12345678",
23 "ids": ["Tthread456"]
24 },
25 "t0"
26 ],
27 [
28 "Email/get",
29 {
30 "accountId": "u12345678",
31 "#ids": {
32 "resultOf": "t0",
33 "name": "Thread/get",
34 "path": "/list/0/emailIds"
35 },
36 "properties": [
37 "id", "threadId", "mailboxIds", "keywords", "from", "to", "cc",
38 "subject", "sentAt", "receivedAt", "messageId", "inReplyTo",
39 "references", "textBody", "htmlBody", "bodyValues", "attachments"
40 ],
41 "bodyProperties": ["value", "isEncodingProblem", "isTruncated"]
42 },
43 "e0"
44 ]
45 ]
46}
47```
48
49## Expected Response Structure
50
51```json
52{
53 "methodResponses": [
54 [
55 "Thread/get",
56 {
57 "accountId": "u12345678",
58 "state": "t9876543213",
59 "list": [
60 {
61 "id": "Tthread456",
62 "emailIds": ["Memail123", "Memail124", "Memail125", "Memail126"]
63 }
64 ],
65 "notFound": []
66 },
67 "t0"
68 ],
69 [
70 "Email/get",
71 {
72 "accountId": "u12345678",
73 "state": "s9876543213",
74 "list": [
75 {
76 "id": "Memail123",
77 "threadId": "Tthread456",
78 "mailboxIds": {"Minbox": true},
79 "keywords": {"$seen": true},
80 "from": [{"email": "alice@project.com", "name": "Alice Johnson"}],
81 "to": [{"email": "team@project.com", "name": "Project Team"}],
82 "subject": "Project Kickoff Meeting",
83 "sentAt": "2024-08-20T09:00:00Z",
84 "receivedAt": "2024-08-20T09:01:00Z",
85 "messageId": ["<msg1@project.com>"],
86 "inReplyTo": null,
87 "references": null,
88 "textBody": [{"id": "text1", "mimeType": "text/plain"}],
89 "htmlBody": null,
90 "bodyValues": {
91 "text1": {
92 "value": "Hi team,\n\nLet's schedule our project kickoff meeting...",
93 "isEncodingProblem": false,
94 "isTruncated": false
95 }
96 },
97 "attachments": []
98 },
99 {
100 "id": "Memail124",
101 "threadId": "Tthread456",
102 "mailboxIds": {"Minbox": true},
103 "keywords": {"$seen": true},
104 "from": [{"email": "bob@project.com", "name": "Bob Smith"}],
105 "to": [{"email": "alice@project.com", "name": "Alice Johnson"}],
106 "cc": [{"email": "team@project.com", "name": "Project Team"}],
107 "subject": "Re: Project Kickoff Meeting",
108 "sentAt": "2024-08-20T11:30:00Z",
109 "receivedAt": "2024-08-20T11:31:00Z",
110 "messageId": ["<msg2@project.com>"],
111 "inReplyTo": ["<msg1@project.com>"],
112 "references": ["<msg1@project.com>"],
113 "textBody": [{"id": "text2", "mimeType": "text/plain"}],
114 "htmlBody": null,
115 "bodyValues": {
116 "text2": {
117 "value": "Alice,\n\nThanks for initiating this. I'm available Tuesday...",
118 "isEncodingProblem": false,
119 "isTruncated": false
120 }
121 },
122 "attachments": []
123 },
124 {
125 "id": "Memail125",
126 "threadId": "Tthread456",
127 "mailboxIds": {"Minbox": true},
128 "keywords": {"$seen": true, "$answered": true},
129 "from": [{"email": "carol@project.com", "name": "Carol Wilson"}],
130 "to": [{"email": "alice@project.com", "name": "Alice Johnson"}],
131 "cc": [{"email": "bob@project.com", "name": "Bob Smith"}, {"email": "team@project.com", "name": "Project Team"}],
132 "subject": "Re: Project Kickoff Meeting",
133 "sentAt": "2024-08-20T14:15:00Z",
134 "receivedAt": "2024-08-20T14:16:00Z",
135 "messageId": ["<msg3@project.com>"],
136 "inReplyTo": ["<msg2@project.com>"],
137 "references": ["<msg1@project.com>", "<msg2@project.com>"],
138 "textBody": [{"id": "text3", "mimeType": "text/plain"}],
139 "htmlBody": null,
140 "bodyValues": {
141 "text3": {
142 "value": "Great! I can also do Tuesday. Should we book conference room A?",
143 "isEncodingProblem": false,
144 "isTruncated": false
145 }
146 },
147 "attachments": []
148 }
149 ],
150 "notFound": []
151 },
152 "e0"
153 ]
154 ]
155}
156```
157
158## Explanation of Key Features
159
160### Thread-Based Operations
161- **Thread/get** retrieves thread metadata including all email IDs in conversation
162- Thread objects are server-computed based on Message-ID, References, and In-Reply-To headers
163- Single thread ID provides access to entire conversation history
164
165### Email Threading Headers
166- `messageId`: Unique identifier for this specific email
167- `inReplyTo`: Message-ID of the email being directly replied to
168- `references`: Complete chain of all prior messages in thread
169- These headers enable proper conversation tree reconstruction
170
171### Chronological Ordering
172Emails within thread can be sorted by:
173- `sentAt`: When sender composed/sent the message
174- `receivedAt`: When server received the message
175- Natural order: Following References header chain
176
177### Complete Content Access
178- `bodyValues` provides decoded text content for each body part
179- `textBody` and `htmlBody` identify which parts contain displayable content
180- `bodyProperties` specifies content metadata to include
181- Full content enables proper thread display and search indexing
182
183### Conversation State Tracking
184- `keywords` show read/unread and response status per email
185- `$seen`: Whether user has viewed this email
186- `$answered`: Whether user has replied to this email
187- `mailboxIds`: Which mailboxes contain each email (may vary within thread)
188
189### Advanced Threading Use Cases
190
191**Client-Side Thread Reconstruction:**
1921. Use References chain to build conversation tree
1932. Sort by sentAt for chronological display
1943. Indent replies based on References depth
1954. Handle threading edge cases (missing intermediate messages)
196
197**Thread-Level Operations:**
198- Mark entire thread as read/unread
199- Move whole conversation to folder
200- Apply labels/keywords to all emails in thread
201- Archive or delete complete conversations
202
203**Performance Optimization:**
204- Single Thread/get call retrieves all email IDs
205- Batch Email/get minimizes round trips
206- Result references eliminate ID duplication
207- Property selection reduces payload size