Take a ten fee earner firm where each person handles forty emails a day on live matters. Across a month that is around eight thousand exchanges, and if a fifth of them never reach the matter file, sixteen hundred conversations sit in mailboxes nobody else can open. Halve the proportion if it strikes you as high, and eight hundred unrecorded exchanges a month still leaves the firm running on a record that does not match what its people agreed.
The partner covering a colleague's holiday opens the file and finds the pleadings, the client care letter, a handful of saved emails from the early weeks, then a gap. The chronology stops making sense in June. A consent order in July answers a question the file never asked. Whatever passed between the fee earner and the other side happened in Outlook and stayed there.
Supervision depends on the file telling the truth about the matter. A supervisor reading a partial record forms a view on partial facts, and the duty to supervise and to keep proper records runs through the SRA Standards and Regulations. A fee earner who holds the matter in their head does not discharge that duty. A record another person can read does.
The gaps come to light late, when somebody needs an answer quickly. An extension of time agreed in a two line email binds the firm and stays invisible to everyone but its two authors. When a subject access request arrives, the search runs across mailboxes nobody organised for the purpose and comes back slower and less complete. On a solicitor and own client assessment, work that exists only as an email sent at nine in the evening is work you will struggle to evidence. When a client's account of an exchange differs from yours, you want the exchange in front of you.
Deciding what belongs on the file
Write down what belongs there, because most firms have never said it out loud. The test that works is whether a colleague picking the file up cold, with no access to anyone's mailbox and nobody to ask, would need the document to understand where the matter stands and why. Confirmation of a hearing time passes that test. A message arranging where to meet for lunch does not. The line sits differently between departments, so let each head of department mark it for their own work.
Make filing a default of the system rather than an act of discretion at the end of a long day. Discretionary filing fails for a predictable reason, which is that it competes with billable work at the hour when the person is most tired. If your case management system can capture correspondence as it is sent and received, turn that on, and let the exception be deliberate removal rather than deliberate saving.
Treat the mailbox as a staging post and never as the record. A firm that accepts two parallel records has chosen to trust the one nobody supervises.
Settle the position on instant messages and mobile texts before it settles itself. Clients message solicitors on WhatsApp, opponents send a chasing text, counsel confirms a point in a chat window outside court. Decide whether those channels are permitted, and if they are, agree how the content reaches the file and who puts it there. A short written rule people follow beats an unwritten prohibition people ignore.
A test worth running this week
Take one live matter at random, ideally a busy one that is not yours. Read the file and nothing else, no mailbox and no conversation with the fee earner. Ask whether it tells you the whole story of the last two months, what was agreed, what was conceded, what the client was told and what falls due next. The answer usually sits short of complete, and it gives you the argument for changing how filing works.
This discipline sets the limit on what any technology over the file can see. The Bracton AI Assistant, an agentic AI legal assistant from Bracton Ltd, plugs into the case management system your firm already runs, LEAP, Clio, Proclaim and others, through the vendor's API, and it comes built into the Bracton case and client management platform. It reads every live matter overnight, drafts routine work, flags files that have drifted or gone quiet, and recovers chargeable work that never reached a time entry. A qualified fee earner signs off every output before anything leaves the firm. What it reads is what the system holds, so correspondence left in a mailbox stays outside its view as surely as it stays outside your supervisor's. The hosting is in the UK and your client data never trains a model.
To find out what your files hold, look at your own matters rather than a demonstration set. We will walk one with you and show what an overnight read finds, and what it misses where correspondence stops short of the file. You keep the answer whether or not you buy anything. If that is useful to you, book a client account review.