Yes. In addition to adding a sender to your Allow List (which will route their email to your inbox and eliminate any Challenge Emails) you may also mute a sender by contacting [email protected]
Muting will not route the sender to your inbox but it will suppress (mute) the Challenge Emails. This is useful for:
Senders you don’t want to allow to reach your inbox, at any time.2)
Senders who may be getting too many Challenge Emails.