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Softeria

Microsoft 365 MCP Server

by Softeria

list-mail-messages

list-mail-messages
Read-only

Search and filter Outlook emails across all folders with KQL queries and OData filters. Returns message metadata and body previews to help locate specific messages.

Instructions

List, search, and filter Outlook email messages in the signed-in user's mailbox across all folders. Returns message metadata (subject, from, receivedDateTime, isRead, hasAttachments) plus a body preview. Use $search for keyword queries, $filter to narrow by sender/read state/date, $top to limit page size, and $select to trim fields.

đź’ˇ TIP: List read search my Outlook emails across folders. 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
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.
countNoSet true to enable advanced query mode (ConsistencyLevel: eventual). Required for complex $filter on flag/flagStatus or contains().
expandNoNavigation properties to inline, e.g. attachments on a message or event. Only navigation properties can be expanded: expanding a non-navigation property such as a message body fails with "Parsing OData Select and Expand failed", and an unsupported value may be ignored rather than reported. Request ordinary fields with $select instead.
filterNoOData filter expression. Add $count=true for advanced filters (flag/flagStatus, contains()). Cannot combine with $search.
searchNoKQL search query — wrap value in double quotes. Cannot combine with $filter.
selectNoComma-separated fields to return, e.g. id,subject,from,receivedDateTime
orderbyNoSort expression, e.g. receivedDateTime desc
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
includeHiddenMessagesNoInclude Hidden Messages
Behavior5/5

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

Annotations (readOnlyHint, openWorldHint, destructiveHint) are complemented by detailed behavioral context: explains that $search and $filter cannot be combined, describes the body preview vs full body, and clarifies pagination behavior with @odata.nextLink. No contradictions with annotations.

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

Conciseness5/5

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

Well-structured with clear sections, bullet points, and examples. Front-loaded with main function, then tips and critical notes. Every sentence provides value; no fluff.

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

Completeness5/5

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

Despite 12 parameters and no output schema, the description is thorough: covers parameter interdependencies, best practices, common pitfalls, and references to sibling tools. Includes URL for further reference.

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?

Schema coverage is 100% with detailed parameter descriptions. The description adds significant value beyond schema: provides KQL syntax examples, explains when to set $count=true for advanced filters, and gives formatting rules for $search (double quotes).

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

Purpose5/5

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

The description clearly states the tool lists, searches, and filters Outlook email messages across all folders. It distinguishes itself from sibling tools like get-mail-message (full body retrieval) and list-mail-folder-messages (folder-specific), using specific verbs and resource scope.

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?

Provides explicit when-to-use guidance: recommends $select to limit fields, explains when to use $search vs $filter, advises on pagination (small $top, then @odata.nextLink), and warns about fetchAllPages payload size. Includes critical formatting tips for $search and references to sibling tool get-mail-message.

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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