The SMS Sender ID Register Is Live: What It Actually Takes to Centralise Client Texting

From 1 July 2026, any business sending branded text messages needs its sender ID registered with a new SMS Sender ID Register. On its own, that’s a straightforward registration step. For professional services firms, law, accounting, broking, and advisory practices, it lands on top of an SMS habit that’s often genuinely ad hoc: staff texting clients from personal or work mobiles, a mix of basic messaging tools, and no central record of who sent what.

Registering a sender ID is the easy part. Making every text a firm actually sends match that registered ID, consistently, across every staff member who currently sends client messages, is the part that turns this into a real admin project.

What the register actually requires in practice

The register itself is a one-time setup: choosing and registering a sender ID that matches the firm’s brand. What follows is the ongoing part: every SMS the firm sends to a client needs to route through that registered ID rather than a staff member’s personal number, which means centralising a communication channel that’s currently scattered across however many phones are being used to text clients.

For a firm of any size beyond a sole practitioner, that centralisation touches template control (making sure messages sent under the firm’s name are consistent and approved), list management (keeping an accurate, current record of who’s being messaged and why), and record-keeping (being able to show what was sent, to whom, and when, if it’s ever questioned).

Where this intersects with AML and privacy obligations

For firms already navigating AML/CTF Tranche 2 obligations, this touches the same client data those obligations already cover. A text message confirming an appointment or requesting a document is a client communication that needs to align with the same consent and record-keeping standards the AML program already requires for client interactions generally.

A firm that centralises SMS at the same time it’s building out AML onboarding processes can treat client communication as one coherent system, rather than building a separate, parallel process for messaging that duplicates work already being done for AML compliance.

This overlap is worth naming explicitly, because firms tackling both changes separately often end up with two different record-keeping systems, one for AML-related client verification and another for general communications, that don’t talk to each other and create two places to check when something needs to be reconstructed later.

What ad hoc SMS actually looks like inside a firm

Take a fifteen-person accounting practice where individual accountants text clients directly from their own phones to confirm meeting times or chase a missing document. Nobody centrally knows how many texts go out in a given week, what they say, or whether they’re consistent with what the firm would want a client to receive under its name. When a staff member leaves, whatever communication history exists on their phone leaves with them.

Centralising this keeps the convenience of a quick text while routing it through a system that logs it, uses the registered sender ID, and keeps a record the firm actually owns rather than one sitting on an individual’s device.

What a centralised communications workflow looks like

A workable setup runs through a shared platform or CRM-integrated messaging tool rather than individual phones, with templates pre-approved for common scenarios (appointment confirmations, document requests, status updates) so staff aren’t drafting client-facing messages ad hoc each time. Access is logged, so there’s a record of who sent what and when, matching the same standard the firm is likely already applying to email. Getting to that point starts the same way any structured admin process gets built: mapping the current ad hoc habit before replacing it, rather than switching tools and hoping the discipline follows.

None of this needs to slow staff down if it’s set up properly. A well-built template library is often faster to use than typing a message from scratch, and the centralisation happens as a byproduct of using the tool rather than as an extra step staff have to remember.

Take a mortgage broking practice sending appointment reminders, document requests, and settlement updates several times a day across a team of loan writers. Moved onto a shared platform with pre-approved templates for each of those scenarios, a loan writer picks the right template, fills in the specific detail, and sends, all in less time than typing a message manually, while the firm gets a complete log of what went out under its name.

Where offshore or admin support fits

Setting up and maintaining this system, registering and monitoring the sender ID, building and updating the template library, managing the contact list, and running periodic checks that messages sent match what’s expected, is exactly the kind of structured, ongoing admin work that suits a dedicated coordinator for law, accounting, and advisory firms rather than being left to whichever staff member happens to think about it.

What stays with the firm’s own team is deciding what should be said in a template and to whom a message should go in anything beyond routine scenarios. What moves is the ongoing work of keeping the system current, consistent, and properly logged.

What to check this quarter

• Confirm your sender ID is registered and that outgoing client texts are actually routing through it rather than staff personal numbers.
• Check whether your SMS templates are centrally approved or being drafted ad hoc by whoever’s sending the message.
• Review whether your SMS record-keeping meets the same standard your firm already applies to client emails.

If client texting at your firm still runs through individual staff phones, that’s the gap worth closing before the register becomes something a client, or a regulator, asks about directly. Book a Connect Session