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mfAnswered

mfAnswered = 0

Example​

procedure MarkAnsweredLocally(Message: TIdMessage);
begin
  Message.Flags := Message.Flags + [mfAnswered];
end;

Usage​

mfAnswered represents the IMAP Answered system flag in a Velox message's local mailbox-state snapshot.

Meaning and boundaries

  • The flag is mailbox metadata. It does not prove that a reply was delivered, accepted or even still exists.
  • Velox does not infer it from In-Reply-To, References, Sent-folder content or message text, and changing those headers does not set this flag.
  • Velox's IMAP receive transport has no special Answered branch; it only retrieves the server snapshot into TIdMessage.Flags.
  • Velox parses \Answered from server responses and includes it when serializing outbound flag sets.

Additional Technical Info​

mfAnswered is the TIdMessageFlags member mapped by Indy to IMAP \Answered. It indicates that a reply action has been recorded for the mailbox message.

The example preserves the other local flags while adding this member. It does not send an IMAP command. It is source-reviewed and is not executed by the documentation workflow.

Local versus remote state

Message.Flags is a copied TIdMessageFlagsSet. Assignment replaces the local set and is not an atomic remote update. An IMAP UID STORE +FLAGS or equivalent mailbox operation is required to add the server flag; another client or rule can change it concurrently.

Use a stable mailbox identity and UID, confirm the selected mailbox and server permissions, and choose add/remove rather than replace when unrelated flags must survive.

Errors, performance and concurrency

Reading or changing the local set is allocation-free and does not raise under ordinary typed use. A remote update can fail for connection, authentication, selected-mailbox, UID, permission or protocol reasons. Treat retrieved flags as a time-limited snapshot.

Related entries

External references

Created 2026-07-15