How to Request an SMS Sender ID in Australia

TL;DR: An SMS Sender ID shows your brand name on outbound messages instead of a mobile number. In SMSFlow you request it from Account settings, then choose it when you send; recipients cannot reply to messages that use a Sender ID.

Request and use a Sender ID (5 steps)

1. Finish account setup first
   SMSFlow is for Australian businesses. You need a valid ABN, an Australian mobile, email verification, and 2FA before you can send. Complete those checks so Account settings are fully available.

2. Open Account → General
   Sign in to the web app, go to Maintenance → Account → General. This is where you manage business details, default sender, dedicated numbers, and Sender ID requests.

3. Submit your Sender ID request
   Use the request Sender ID option and enter the name you want customers to see (your trading name or short brand). Keep it clear and professional; approval depends on normal account checks.

4. Set it as default sender if you want
   Once approved, you can set the Sender ID as your default sender in the same Account General area so branded outbound SMS is the usual choice for bulk sends.

5. Send bulk SMS with the Sender ID (and know the reply trade-off)
   On Send SMS, pick contacts, groups, pasted numbers, or a CSV import, write or pick a template, preview credits, then send or schedule. Use the Sender ID for one-way branded alerts. If you need two-way chat, do not use a Sender ID for that send; recipients cannot reply when a Sender ID is used. Inbound replies from number-based sends appear in Inbox (you reply via Send SMS, not from Inbox).

More detail below if you need context on when a Sender ID helps and when it does not.

When a Sender ID helps Australian bulk SMS

A Sender ID is useful when recognition matters more than conversation: order updates, appointment reminders, flash offers, or service notices. Customers see your name on the lock screen, which can lift open rates compared with an unknown number.

It is a poor fit when you expect replies, bookings confirmation back-and-forth, or support threads. For those jobs, send from a number path so people can answer, then track inbound messages in Inbox and continue via Send SMS.

SMSFlow focuses on Australian numbers and verified businesses. Billing is credit-based (some messages use more than one credit). New accounts get 50 free credits after signup. See pricing for how credits work; we do not list dollar amounts here.

Related guides in this cluster: Bulk SMS Australia overview, send bulk SMS for small business, and track SMS replies in Inbox.

Sender ID vs number sending (quick facts)

• Branding: Sender ID shows a name; number sending shows a phone number.
• Replies: No customer replies with a Sender ID. Number-based sends can receive replies you view in Inbox.
• Where you manage it: Request and default sender live under Account → General, not in a separate app (SMSFlow is web only).
• Compliance mindset: Keep opt-out wording clear (unsubscribe keywords and opt-out message are also in Account General). Review unsubscribes in reports so lists stay clean.
• Limits to expect: No white-label reseller mode, no custom workflow builder, and no claim of real-time delivery guarantees. Stick to verified sending and honest one-way vs two-way choices.

FAQ

What is an SMS Sender ID in Australia?

It is the brand name shown as the sender on an outbound SMS instead of a mobile number. In SMSFlow you request it from Account → General after your business account is verified.

Can customers reply to a Sender ID message?

No. Recipients cannot reply when you use a Sender ID. Use number-based sending if you need replies, then handle inbound messages in Inbox and reply via Send SMS.

Where do I request a Sender ID in SMSFlow?

In the web app under Maintenance → Account → General. The same area covers default sender, business details, timezone, and opt-out settings.

Do I need an ABN to use a Sender ID?

Yes. SMSFlow is for Australian businesses with a validated ABN, Australian mobile, email verification, and 2FA. You cannot send until those checks are complete.

Does a Sender ID change how credits work?

Credits still apply per message rules (some messages use more than one credit). A Sender ID does not remove the credit model. Check pricing and your Billing screen for balances and invoices.

Can I edit a scheduled message that uses a Sender ID?

No. You can review scheduled messages and cancel them, but you cannot edit a scheduled send. Cancel and create a new one if the copy or sender choice must change.

SMSFlow for branded bulk SMS

SMSFlow is an Australian SMS platform for sending to Australian numbers, managing contacts and groups, viewing Inbox replies on number-based traffic, and requesting a Sender ID from account settings. You get a simple web UI plus API keys under Account → Developers if you automate sends. Campaigns for group marketing exist in beta. It is not a full CRM and does not offer desktop or mobile apps.

Conclusion

Request your Sender ID from Account → General, use it for clear one-way branded bulk SMS, and switch away from Sender ID whenever you need replies. That single choice keeps branding strong without blocking customer conversations.

Try SMSFlow free (50 free credits on signup) or contact us if you have account questions. More answers live on our frequently asked questions page.