Microsoft 365 Email Receive - CData Arc Documentation

The Receive action receives email from a Microsoft 365 mailbox and passes it down the flow. The Microsoft 365 Email Receive connector belongs at the beginning of an Arc flow. On the connector Action tab, configure the following settings:

Setting	Description
Folder	The mail folder to receive messages from. Accepts a folder display name or a well-known folder name such as Inbox. Defaults to Inbox.
Download	How the connector outputs each email. Message (the default) outputs the email as a single .eml file. Attachments outputs each attachment as a separate message; emails with no attachments produce no output while the watermark still advances.

Output Headers

Each message passed down the flow carries the following headers:

Microsoft365Email-Message-Id
Microsoft365Email-Subject
Microsoft365Email-Conversation-Id
Microsoft365Email-Categories (absent when the message has no Outlook category)

Receive Filters

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.

Post-Receive Action