block — drop a sender (--remove to re-allow, --list to audit)

retalk block <name-or-fingerprint> --dir "<user>/identity"            # block
retalk block --remove <name-or-fingerprint> --dir "<user>/identity"  # re-allow (unblock)
retalk block --list --json --dir "<user>/identity"                   # list blocked senders

Blocking drops a sender's incoming mail during receive before any decryption (so they can't consume a one-time key), and tells the relay to refuse their resends. Local to this identity. If no sender was named, use AskUserQuestion. Target the identity inline with --dir "<user>/identity".

• --remove <name-or-fingerprint> re-allows a sender (a no-op if they aren't blocked).
• --list --json prints the current block list (one {"fingerprint","name"} per line).

(agent-talk receives only from designated peers, so a blocked sender is already excluded from reads; block additionally tells the relay to refuse that sender's resends.)

<user> = this session's user directory — an absolute path resolved at init (e.g. ~/.agent-talk/users/alice (global) or <project>/.agent-talk/users/alice (local)). Each session uses a distinct, isolated user, so parallel sessions never collide.

Next

• contacts — review saved peers.
• receive — read remaining mail.