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list-mail-messages

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List email messages from your mailbox with search, filter, pagination, and field selection. Use KQL or OData filters to find specific messages.

Instructions

Get an open extension (openTypeExtension object) identified by name or fully qualified name. The table in the Permissions section lists the resources that support open extensions. The following table lists the three scenarios where you can get an open extension from a supported resource instance.

đź’ˇ TIP: CRITICAL: When searching emails, the $search parameter value MUST be wrapped in double quotes. Format: $search="your search query here". Use KQL (Keyword Query Language) syntax to search specific properties: 'from:', 'subject:', 'body:', 'to:', 'cc:', 'bcc:', 'attachment:', 'hasAttachments:', 'importance:', 'received:', 'sent:'. Examples: $search="from:john@example.com" | $search="subject:meeting AND hasAttachments:true" | $search="body:urgent AND received>=2024-01-01" | $search="from:john AND importance:high". Remember: ALWAYS wrap the entire search expression in double quotes! Reference: https://learn.microsoft.com/en-us/graph/search-query-parameter IMPORTANT: Always use $select to limit returned fields and reduce response size. Recommended default: $select=id,subject,from,toRecipients,receivedDateTime,bodyPreview,isRead,hasAttachments. Use bodyPreview instead of body for listings. To read the full email body, use get-mail-message with the specific message id.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
includeHiddenMessagesNoInclude Hidden Messages
topNoPage size (Graph $top). Start small (e.g. 5–15) so responses fit the model context; raise only if needed. Use $select to return fewer fields per item. For more rows, use @odata.nextLink from the response instead of a very large $top.
skipNoItems to skip for pagination. Not supported with $search.
searchNoKQL search query — wrap value in double quotes. Cannot combine with $filter.
filterNoOData filter expression. Add $count=true for advanced filters (flag/flagStatus, contains()). Cannot combine with $search.
countNoSet true to enable advanced query mode (ConsistencyLevel: eventual). Required for complex $filter on flag/flagStatus or contains().
orderbyNoSort expression, e.g. receivedDateTime desc
selectNoComma-separated fields to return, e.g. id,subject,from,receivedDateTime
expandNoExpand related entities
fetchAllPagesNoFollow @odata.nextLink and merge up to 100 pages into one response. Can return enormous payloads—only when the user explicitly needs a full export. Prefer a small $top first, then paginate or narrow with $filter/$search.
includeHeadersNoInclude response headers (including ETag) in the response metadata
excludeResponseNoExclude the full response body and only return success or failure indication
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate readOnlyHint=true and destructiveHint=false. The description adds crucial behavioral details: search query syntax, limitations (cannot combine $search with $filter), pagination behavior, and warnings about large payloads from fetchAllPages.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is unnecessarily long and starts with an irrelevant sentence about open extensions. The useful content is buried in a large tip block. Conciseness is compromised by poor structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite the misleading start, the description covers search syntax, pagination, field selection, and alternatives. It lacks a clear statement of what the tool returns (list of messages). Overall, fairly complete for a complex tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

All 12 parameters have detailed descriptions in the input schema, covering usage, examples, and constraints. The tool description further enriches parameter semantics, especially for search, top, and fetchAllPages.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose2/5

Does the description clearly state what the tool does and how it differs from similar tools?

The first sentence is about 'Get an open extension', which is unrelated to listing mail messages. The description does not clearly state that this tool lists mail messages; it focuses on searching emails. This ambiguity makes the purpose vague.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit guidelines: when to use $search vs $filter, how to format queries, recommends $select for efficiency, and directly points to get-mail-message for full body retrieval. It also advises on pagination with $top and fetchAllPages.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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