If you're evaluating Five9, you're probably staring at a contact-center platform when what you actually need is two things: a way to send a lot of compliant SMS, and a dialer to follow up. Those two needs don't require a full CCaaS deployment, an implementation timeline, or a seat-count commitment — but that's often what you end up buying.
Full disclosure: I work for ReadySMS, so I have a side in this. I'll try to be honest about where Five9 is genuinely the better choice, because for a real contact center it frequently is. This post is for the buyer who's about to over-purchase.
Where Five9 is genuinely strong
Five9 is a mature, enterprise cloud contact center (CCaaS). If your problem is "run a 200-seat inbound/outbound operation with omnichannel routing, IVR, WFM, QA scorecards, and deep CRM connectors," that's the category it's built for, and a lean SMS-plus-dialer tool won't replace it.
Things you go to a real CCaaS platform for:
- ACD and skills-based routing for inbound queues at scale
- Workforce management and forecasting — scheduling agents against predicted volume
- Omnichannel (voice, email, chat, social) in one agent desktop
- QA, compliance recording, and analytics suites built for supervisors
- Predictive/progressive dialing tuned for large outbound floors with abandon-rate controls
I'm not going to quote Five9's pricing — confirm it at their site, since CCaaS pricing is quote-based and tied to seats, channels, and term. But the shape of the deal is the point: you're signing an annual contract, often per-named-agent, with an onboarding project attached. That's correct for an enterprise contact center. It's overkill for a sales team that wants to text leads and dial them back.
When you don't need a contact center
A surprising number of teams shopping CCaaS just need outbound. Signals you're in this group:
- Your "queue" is a lead list, not an inbound 800-number flood.
- You measure speed-to-lead and reply rate, not average handle time and abandon rate.
- You have 1–25 people who text and call, not a floor of 100+.
- You don't need IVR, skills routing, or WFM — you need messages to land and calls to connect.
If that's you, the CCaaS machinery is weight you'll pay for and never use. The two capabilities that actually move your numbers are cheap, deliverable SMS and a dialer that puts agents on live conversations fast. That's the entire scope of what ReadySMS does — and the narrower scope is exactly why it's cheaper and faster to stand up.
What ReadySMS does instead
ReadySMS is a messaging platform with a built-in power dialer, sitting as a thin layer over carrier infrastructure on registered 10DLC routes. No annual contract, no per-seat minimum to start, and you can begin sending today.
Core capabilities:
- Registered A2P 10DLC SMS with transparent volume-tiered per-segment pricing (more below)
- Built-in power dialer — manual + queue dial, call recording, voicemail drop, transfer/barge/whisper, and speed-to-lead auto-dial
- Done-for-you 10DLC — brand and campaign registration handled in-app
- Native GoHighLevel integration via OAuth, with two-way message sync mapped per sub-account
- Compliance stack — automatic STOP handling, quiet-hours enforcement, and litigator/DNC scrubbing
- free test sends plus a $25 credit when you register 10DLC, to test deliverability before you spend
The SMS pricing, with the math shown
This is where leaving the CCaaS envelope pays off. ReadySMS bills per outbound segment plus a transparent $0.0045/segment carrier pass-through that isn't marked up:
| Tier | Volume / month | Per segment | + carrier | All-in |
|---|---|---|---|---|
| Starter | 0–50,000 | $0.0155 | $0.0045 | $0.0200 |
| Growth | 50,000–500,000 | $0.0125 | $0.0045 | $0.0170 |
| Enterprise | 500,000+ | $0.0028 | $0.0045 | $0.0073 |
A segment is 160 GSM-7 characters; longer texts split into 153-char parts, and any emoji drops the limit to 70 characters.
Worked example. Say you send a 175-character outbound message with one emoji to 20,000 leads. The emoji forces unicode encoding (70-char limit), so 175 chars = 3 segments. That's 60,000 segments — Growth tier:
20,000 × 3 × ($0.0125 + $0.0045) = 60,000 × $0.0170 = $1,020.00
Strip the emoji and tighten the copy to 160 GSM-7 characters and it's a single segment: 20,000 × ($0.0155 + $0.0045) = $400.00. Same campaign, less than half the cost — and no enterprise contract sitting underneath it. (Run your own numbers on the cost calculator.)
The dialer, priced per agent — not bundled into a floor
Five9's strength is large outbound floors with predictive dialing. ReadySMS doesn't try to be that. The Power Dialer is built for lean outbound teams:
| Plan | Price | Agents | Minutes | Per-min after |
|---|---|---|---|---|
| Free | $0/mo | 1 | 500 incl. | $0.06 |
| Pro | $29/agent/mo | up to 3 | — | $0.05 |
| Team | $69/agent/mo | unlimited | — | $0.0375 |
Minutes bill in 6-second increments. The Team plan adds speed-to-lead auto-dial, lead routing, and manager monitoring (barge/whisper).
The pairing that actually matters for outbound: a new lead comes in, ReadySMS fires an instant SMS and auto-dials an available agent. Hitting a lead inside the first five minutes is the difference between a connect and voicemail tag, and you don't need a CCaaS deployment to get that loop running. If your interest is mostly the dialing side, the PhoneBurner alternative and Dialpad alternative posts dig into dialer-first comparisons.
Compliance: the part you can't skip on outbound SMS
Outbound A2P texting on US carriers requires 10DLC registration, or your traffic gets filtered into the void. ReadySMS handles brand + campaign registration in-app — roughly ~$10/mo per brand and ~$20/mo per campaign in carrier fees, with approval typically in 4–7 business days. (The 10DLC explainer covers the why.)
Beyond registration, the platform does the boring-but-critical work:
- Automatic STOP handling — opt-outs propagate so a contact can't be re-messaged across campaigns
- Quiet-hours enforcement — sends held outside permitted local hours based on the recipient's area
- Litigator / DNC scrubbing — known TCPA-litigator and DNC numbers screened before send (also available standalone at $0.005/contact)
- Consent attestation capture for an audit trail
None of this makes you lawsuit-proof — compliance is ultimately the sender's responsibility. But given TCPA exposure runs $500–$1,500 per text, half a cent per contact to scrub a litigator list is cheap insurance.
Honest comparison
| Five9 | ReadySMS | |
|---|---|---|
| Category | Enterprise CCaaS | Outbound SMS + dialer |
| Best for | Large inbound/outbound contact centers | Lean outbound teams, agencies, SMBs |
| Contract | Annual, quote-based, per-seat | Prepaid credits, no contract |
| Time to first send | Implementation project | Same-day after 10DLC |
| Inbound ACD / IVR / WFM | Yes, robust | No |
| 10DLC registration | Confirm at their site | Done in-app |
| SMS cost | Quote-based | $0.0073–$0.02/segment all-in, volume-tiered |
| Free trial | Sales-led | free test sends + $25 registration credit |
| GoHighLevel native | No | Yes, OAuth two-way |
If you genuinely run a contact center — inbound queues, supervisors, WFM, predictive dialing across a big floor — Five9 is the right category and ReadySMS isn't a substitute. I'd rather you buy the right tool than churn off ours in 60 days.
The practical takeaway
The question isn't "Five9 or ReadySMS" so much as "do I need a contact center, or do I need outbound SMS and a dialer?" If it's the latter, a full CCaaS contract is weight and cost you'll carry for features you won't touch.
ReadySMS covers the lean version: registered 10DLC handled for you, volume-tiered per-segment SMS with the math laid out, a per-agent dialer with speed-to-lead, and native GoHighLevel sync. The honest move is to test deliverability before committing — the free test sends exist for exactly that. Start there, or check pricing and run your volume through the calculator first.