What a bulk send is good for
Bulk SMS earns its keep when the same message genuinely applies to many people: a closure notice, a weather reschedule, a seasonal booking window, a run of pickup-ready alerts. Write it once, choose the list, check the cost, send.
It is a poor fit for anything that needs to be different per person beyond a name and a time. If you find yourself editing thirty rows by hand, you wanted thirty single sends.
Build the list properly
Collect numbers with clear consent, on booking forms, invoices and at the counter, and record where each number came from. Only text people who would reasonably expect to hear from you, always identify your business in the message, and stop immediately when somebody asks you to.
That is not a style preference. Unsolicited commercial messages are regulated in Australia, and the obligation sits with the sender.
One message, one action
“Spring cleanups are booking now. Reply YES to lock in your usual slot.” If you need to say three things, that is three separate sends on three separate days, not one long text that gets read halfway.
How the upload behaves
Upload the file and the whole thing is priced before anything is charged. You confirm that exact figure, then the rows queue in file order. An invalid row is never charged for, and the run stops at the first refusal instead of scattering some sends and skipping others, so you always know where it got to.
Upload the same file twice and the second run skips what already went. The file is fingerprinted and each row carries its original line number, so a nervous re-upload does not charge you twice.
What it costs
One accepted message uses one credit, so a 500 message campaign is the $49 starter pack. The per-message price falls as the packs get larger. There is no monthly fee, so an occasional sender pays nothing between campaigns and unused credits do not expire.