SimpleTexting vs ReadySMS: Which Fits an Agency Reselling SMS?
If you run an agency and you're choosing an SMS platform to power client campaigns — or worse, to resell at a margin — the wrong pricing model can quietly eat your profit before you've sent a single message. SimpleTexting and ReadySMS are built on completely different billing philosophies, and that difference is the whole story for an agency.
Full disclosure: I work for ReadySMS, so I have a side here. But I'll be straight about where SimpleTexting genuinely fits better, because for some agencies it does. The goal is to help you pick the model that matches how you actually bill clients.
The core difference: contact plans vs per-segment
SimpleTexting prices around contacts and message credits bundled into monthly plans. You pick a tier based on how many contacts you have or how many messages you expect, and you pay a fixed monthly fee for that bucket. It's a clean, predictable model if your sending is steady and your contact list is the natural unit of measure.
ReadySMS prices around what you actually send — per outbound segment, prepaid as credits, with the carrier fee itemized separately rather than baked in. There's no monthly contact bucket to outgrow. You buy credits, you spend them, your bill matches your volume.
For an agency, those two models lead to very different economics, especially when you're sending wildly different volumes per client.
| SimpleTexting (contact-plan style) | ReadySMS | |
|---|---|---|
| Billing unit | Monthly plan tied to contacts / message bundles | Prepaid credits, per outbound segment |
| Carrier fees | Generally bundled into the plan | Itemized separately at $0.0045/segment pass-through |
| Volume flexibility | Pay for the tier whether you use it or not | Pay only for segments sent |
| Per-segment rate | Effective rate varies by plan | $0.0084 → as low as $0.0028 by volume tier |
| GHL integration | Limited / not native | Native OAuth, per-location two-way sync |
| Free start | Trial-based | 2,500 free credits, no card required |
Where the contact-plan model hurts agencies
The contact-plan model assumes a relatively stable relationship between how many contacts you have and how many messages you send. Agencies break that assumption constantly.
Say you onboard a client with a 40,000-contact list, but you only message a 6,000-person engaged segment each month. Under a contact-based plan, you're paying for the full list size sitting in the database — capacity you're not using. Multiply that across ten clients, each with a list larger than their active sending, and you're buying a lot of dead weight.
The reverse also bites. A client with a small list but aggressive sending — daily promos, multi-message automations — can blow through a bundle's included credits and push you into overage or a forced upgrade. Now your costs jump in a step function while your client revenue stays flat.
Per-segment pricing sidesteps both problems. A dormant 40,000-contact list costs you nothing until you message it. A heavy sender costs exactly proportional to what they send. For agencies juggling clients with different behaviors, "pay for what you send" is just a cleaner match.
The rebilling math agencies actually care about
If you're reselling SMS, your margin is the gap between what a message costs you and what you charge the client. That gap is much easier to control when your input cost is a clean per-unit number.
Here's a worked example. Suppose you send 120,000 segments across your clients in a month. On ReadySMS that puts you in the Standard tier at $0.0064/segment, plus the $0.0045/segment carrier pass-through:
- 120,000 × ($0.0064 + $0.0045) = 120,000 × $0.0109 = $1,308/month in true cost
- Your per-segment cost: $0.0109
Now rebill clients at, say, $0.02/segment (still well below what most clients would pay raw through a CRM's default SMS):
- 120,000 × $0.02 = $2,400 in client revenue
- Margin: $2,400 − $1,308 = $1,092/month, roughly 45%
The point isn't the exact markup — set that wherever your market supports. The point is that a transparent per-segment input cost makes the margin legible. You know your cost per message to four decimal places, so you can price confidently. With a bundled contact plan, your effective per-message cost shifts depending on how full the bundle is that month, which makes consistent rebilling guesswork.
We dug into this in more depth in How GoHighLevel Agencies Actually Make Margin Reselling SMS — worth reading if rebilling is your business model.
The GoHighLevel question
A lot of agencies live inside GoHighLevel, and this is where the two platforms diverge hardest. SimpleTexting is a strong standalone SMS product, but it isn't built around GHL. If your clients' conversations, automations, and pipelines live in GHL, bolting on an outside texting tool means context lives in two places.
ReadySMS connects to GHL via OAuth with two-way sync, mapped per location/sub-account. Inbound replies land in the GHL conversation thread, outbound goes out through registered 10DLC routes, and each client sub-account stays isolated. For an agency, that isolation matters — you're not commingling one client's traffic or opt-outs with another's.
If your stack isn't GHL, this advantage mostly evaporates, and the decision comes back to pricing and compliance. There's a fuller breakdown in our Best SMS Provider for GoHighLevel guide, and a step-by-step in the GHL SMS setup walkthrough.
Compliance: who handles the unglamorous stuff
Both platforms operate on registered routes — you need 10DLC either way, and that's not optional anymore. Unregistered traffic gets carrier-filtered into oblivion.
ReadySMS handles brand and campaign registration in-app (roughly ~$10/mo per brand, ~$20/mo per campaign in carrier fees, with approval usually landing in 1–3 days). On top of registration:
- Automatic STOP/opt-out handling that propagates across campaigns, so an opt-out on one client campaign sticks
- Quiet-hours enforcement based on recipient area, holding sends outside permitted local windows
- Litigator / DNC scrubbing to screen known TCPA-litigator and DNC numbers before send
- Consent attestation capture for bulk and API sends, building an audit trail
For agencies, the propagating opt-out and the audit trail are the underrated features. When a client gets nervous about compliance — and they will — being able to show recorded consent and honored opt-outs is what keeps the relationship. None of this makes anyone lawsuit-proof; compliance is ultimately the sender's responsibility. But it reduces exposure, and the standalone litigator/DNC scrub at $0.005 per contact is cheap insurance against TCPA claims that can run $500–$1,500 per text. If 10DLC is new to you, start with our registration cost breakdown.
When SimpleTexting is actually the better pick
I'm not going to pretend ReadySMS wins every scenario. SimpleTexting is a genuinely good product, and it fits some agencies better:
- You don't use GoHighLevel. If your clients live elsewhere and you want an all-in-one texting UI with built-in list management, SimpleTexting's polished standalone experience is a real advantage.
- Your volume is steady and predictable. A fixed monthly plan is easy to forecast and bill clients flatly against. If you're not chasing per-segment margin, predictability has value.
- You want heavy built-in marketing tooling — drip builders, landing-page-style sign-up tools, and a contact-centric workflow out of the box without assembling pieces.
If those describe you, the contact-plan model isn't a trap — it's just a different shape that happens to match your business.
When ReadySMS is the better fit
ReadySMS leans toward agencies that:
- Resell SMS at a margin and need a transparent per-segment input cost to price against
- Run on GoHighLevel and want native two-way sync with per-client isolation
- Have uneven volume across clients — big dormant lists, spiky senders — where paying per segment beats paying per bucket
- Want compliance handled in-platform — registration, opt-out propagation, quiet hours, scrubbing — rather than stitched together
The volume tiers reward growth, too. As your aggregate sending climbs from Starter ($0.0084) through Standard ($0.0064) and into Pro ($0.0049), the per-segment cost drops automatically — so the more clients you bring on, the better your margin gets. You can model your own numbers on the pricing page or the cost calculator.
The practical takeaway
This isn't a case where one platform is "better" in the abstract. It's a fit question:
- Standalone, steady-volume, non-GHL agency? SimpleTexting's contact-plan model is clean and predictable, and it's a solid product.
- Reselling SMS, running on GoHighLevel, or dealing with uneven client volume? ReadySMS's per-segment + transparent carrier pass-through + native GHL integration is built for that exact shape, and it makes your rebilling margin something you can calculate instead of estimate.
If you want to see how the per-segment math lands on your real numbers, ReadySMS gives you 2,500 free credits with no card required — enough to run a live client blast, watch the segment counting, and see the itemized carrier line for yourself before you commit. That's usually a faster answer than any comparison table.