A broker-dealer and RIA archives email and messaging for SEC and FINRA, and keeps mail flowing through an outage

The firm was both a broker-dealer and an investment adviser, and its compliance officer knew the exposure. Email lived in mailboxes where a user could delete a message, retention depended on a policy nobody had checked since it was set, and several advisers texted clients from personal phones. A review turned up client conversations the firm could not produce. That is the off-channel communications problem that regulators have pursued across the industry, with large penalties and mandated compliance consultants for firms that could not show they kept required business communications.

The first step was protection, because an archive of a compromised mailbox is a bad archive. Filtering attached to Microsoft 365 through the platform's API, with no change to how users work. AI-assisted detection read the context around each message, such as sender history, a changed payment instruction and a lookalike domain, to catch phishing and business email compromise. Outbound data-loss rules warned advisers before client account numbers left in an unencrypted message. Alerts for compromised-mailbox signals, such as a new forwarding rule or sign-in from an impossible location, reached the compliance officer and our team.

The archive was designed against the rules that apply. SEC Rule 17a-4 allows required records to be preserved in a write-once, read-many format or, under the 2022 amendments, in a system that keeps a complete, time-stamped audit trail so an altered or deleted record can be recreated. The firm chose the audit-trail route, documented how the system met it, and wrote the retention schedule to match FINRA Rule 4511 and the firm's other obligations. All sent and received mail went into the archive, searchable through a web portal with role-based access for reviewers, with eDiscovery search, tagging and export. SMS, WhatsApp and Teams chat on company-managed numbers, and recorded client calls, joined the same archive. Advisers moved business texting to those channels, with training on why.

Legal hold and continuity were tested rather than assumed. A mock inquiry asked compliance to freeze and produce every communication with one client across all channels, and the hold suspended deletion until counsel released it, with an audit log of every search and export. For continuity, the firm kept a standby mail service with its own web inbox and a written switchover procedure that was rehearsed once a year. When the cloud mail platform later suffered an outage lasting several hours, staff opened the continuity inbox, kept sending and receiving client and trading messages, and the held mail was delivered back to their mailboxes when service returned.

The modeled result is a firm that can show an examiner where each kind of communication is kept, how long, who could change it and how a hold was applied, and that did not stop working on the day its mail platform did. Mail kept flowing during the outage, and the archive had no gap. This case describes general regulatory principles, not legal advice or a compliance certification, and it is an illustrative engagement with modeled outcomes.