アウトプットヘッダー
フローの下流に渡される各メッセージには、次のヘッダーが付与されます。Microsoft365Email-Message-IdMicrosoft365Email-SubjectMicrosoft365Email-Conversation-IdMicrosoft365Email-Categories（メッセージにOutlook カテゴリがない場合は付与されません）
受信フィルタ
The following filters appear on the Advanced tab and restrict which messages the connector retrieves on each poll.
| Setting | Description |
|---|---|
| Read State | Restricts the messages retrieved to only unread or only read messages. Defaults to Any. |
| Importance | Restricts the messages retrieved to a single importance level. Defaults to Any. |
| Attachments | Restricts the messages retrieved to those with or without attachments. Defaults to Any. |
| Category | Restricts the messages retrieved to those stamped with the specified Outlook category. Leave empty to receive messages regardless of category. |
| Conversation Id | Restricts the messages retrieved to a single conversation thread. Each received message carries its conversation Id in the Microsoft365Email-Conversation-Id header, which is where this value comes from. |
| Subject | Restricts the messages retrieved to those whose subject contains the specified value. Leave empty to receive messages regardless of subject. |
| Sender | Restricts the messages retrieved to those sent from the specified email address. The address must match in full; a partial address or bare domain matches nothing. Leave empty to receive messages from any sender. |
| Max Messages | The maximum number of messages to retrieve in a single poll. Messages are retrieved oldest first, so remaining messages are picked up on the following poll. Defaults to 50. |
| Days To Search | The number of days to look back when searching for messages. Defaults to 7. When set to 0, no date limit is applied. When Only Process New Messages is enabled, this value is used only as a fallback when no prior receive watermark is available. |
| Only Process New Messages | When enabled (the default), the connector tracks the last message received and will not re-download it on subsequent polls. The connector uses a stored watermark as the primary date filter and falls back to Days To Search when the watermark is unavailable. When disabled, every poll retrieves messages within the Days To Search window without tracking state. |