Because the substance of the relationship lives there. What was recommended, what was declined, what the client said about their objectives — all of it in one person's email, and none of it in the system of record.
When that adviser leaves, the firm keeps the client and loses the reason for every decision made on their behalf.
Two-way email sync threads client correspondence onto the client record rather than leaving it in a mailbox. Meetings are logged from the calendar, and commitments made in them become tasks with owners.
Every field change keeps its previous value with the actor and timestamp, and administrators cannot edit that record.
It does not model portfolios, calculate suitability or produce regulated reports. It is the client and relationship layer beside the systems that do.
And it does not make you compliant. It records thoroughly and immutably; what you must record, and for how long, is a question for your own compliance function.
A file review is a page rather than a search: the correspondence, the meetings, the documents and the changes, in sequence. A handover to a new adviser starts from the same page.
Field-level permissions let the record be complete without being open — fee and margin visible to the people who need them, not to everyone with the account.
Yes, two-way, matched by client participant — private mail is never synced.
No. Records can be corrected; the previous value is kept and attributed.
Yes, at field level, with every access to a restricted field recorded.
Half an hour on your own numbers is usually enough to say whether Flow is the right place to start.