Fastmail icon

Fastmail

Actions for Fastmail messages, labels, drafts and threads

Actions30

Message → Mark a Message as Unread

AI-generated

Summary

Marks a specified Fastmail message as unread. Requires the Message ID. Accepts but ignores fetch options (such as read status, search, etc.). Returns success status and, if debug is enabled, includes the JMAP response and before/after message state.

Inputs

  • messageId (required) — ID of the message to mark as unread
  • fetchOptions — Collection of options (read status, search, etc.) that are accepted but not used for this operation

Output shape

An object per input item containing: action ('markUnread'), messageId, successful (boolean), and if debug enabled: JMAP response and before/after message state

Before/after state includes message ID, mailbox IDs, and keywords when debug is enabled

Links

Discussion