If you've been evaluating ClickSend, you're probably doing one of two things: shipping transactional or notification SMS from your app, or trying to run actual conversations and campaigns with US customers. ClickSend is genuinely good at the first job. It's a different shape of product for the second — and that gap is the whole reason this post exists.
Full disclosure: I work for ReadySMS, so I have a horse in this race. I'm going to try to be straight with you anyway, including the cases where ClickSend is the better pick. If your needs match theirs, you'll save yourself a migration by reading to the end.
Where ClickSend is genuinely strong
ClickSend is a multi-channel gateway with deep roots in Australia and a broad international footprint. If your use case is any of the following, it's a reasonable choice and I'd confirm current details on their site before switching:
- Multi-channel from one API: SMS, MMS, voice, email, fax, and even physical letters/postcards. If you actually need to drop a printed letter into the mail via an API call, that's a real and unusual capability.
- Global reach: strong coverage outside North America, which matters if your audience is in APAC, the UK, or Europe.
- Clean transactional API: well-documented, predictable, the kind of thing a backend engineer can wire up in an afternoon to fire OTPs and order confirmations.
- No long-term contract: pay-as-you-go, which is the right model for spiky transactional volume.
If you're a developer sending one-off system notifications to a global list and you don't care about US carrier registration nuance or running two-way campaigns, you may not need to switch at all. Confirm pricing and feature specifics directly with ClickSend — I won't quote their numbers because they change and I'd rather not guess.
The friction shows up the moment your job is US texting at volume: cheap registered SMS, real conversations, outbound calling, and 10DLC you don't have to babysit. That's where a texting platform beats a gateway API.
Gateway API vs. texting platform: the real difference
A gateway gives you a pipe. You're responsible for everything around it — the inbox, the campaign logic, opt-out tracking, the dialer (there isn't one), and the 10DLC paperwork. That's fine if you have engineers and just want raw send. It's a problem if you're an ops person, an agency, or a small team that wants to use SMS, not build the tooling around it.
Here's the split in plain terms:
| Capability | Gateway API (ClickSend-style) | ReadySMS |
|---|---|---|
| Raw transactional send | Yes, strong | Yes |
| Two-way conversations inbox | Limited / DIY | Built-in |
| Bulk campaigns + templates | Basic | Built-in |
| Outbound power dialer | No | Built-in |
| Native GoHighLevel sync | No | Yes (OAuth, per sub-account) |
| Done-for-you 10DLC | Self-serve | Handled in-app |
| Free credits to test | Trial credit | 20 free test sends + $25 credit at registration |
You can build a lot of the middle column on top of a raw API. The question is whether you want to.
US registered SMS with volume pricing that's actually itemized
The thing that drives most switches is cost on US registered routes. ReadySMS sits as a thin layer over carrier infrastructure, and the per-segment price drops as volume rises:
| 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 |
On top of each segment is a flat $0.0045 carrier pass-through, billed separately instead of baked silently into the headline rate. I won't quote ClickSend's per-message price — check their site — but the structural point is this: a lot of providers blend the carrier fee into a single "per message" number so you can't see what's markup and what's the carrier's cut. We itemize it. If you want the why, we wrote it up in the $0.0045 line item most SMS providers bake into their price.
Worked example
Say you send a 175-character promo with one emoji. The emoji forces unicode encoding, which drops the segment limit to 70 chars (67 for multipart) — so 175 chars is 3 segments. Blast that to 5,000 contacts on the Starter tier:
`` 5,000 contacts × 3 segments × ($0.0155 + $0.0045) = 15,000 segments × $0.0200 = $300.00 ``
Drop the emoji and tighten copy to 160 plain GSM-7 characters and you're at 1 segment:
`` 5,000 × 1 × $0.0200 = $100.00 ``
That's a 3x swing on a single design decision. A platform that shows you segment counts before you send saves you real money; a raw gateway just bills you and moves on.
Native GoHighLevel — not a webhook bridge
If you run on GoHighLevel, this is the part ClickSend simply doesn't do. ReadySMS connects via OAuth with two-way sync mapped per location / sub-account, so an agency keeps each client isolated and replies land in both the ReadySMS inbox and inside GHL. No middleware, no Zapier duct tape, no shared number bleeding between accounts.
We go deep on this in the best SMS provider for GoHighLevel guide and the GHL setup walkthrough. If GHL isn't part of your stack, ignore this section entirely — it's not a reason to switch on its own.
Done-for-you 10DLC
Sending application-to-person SMS to US numbers means A2P 10DLC registration. Unregistered traffic gets carrier-filtered — your messages quietly don't arrive. Gateways generally make you handle brand and campaign registration yourself, and rejections are common when sample messages or use cases are sloppy.
ReadySMS handles the whole thing in-app:
- Brand + campaign registration done for you, roughly ~$10/mo per brand and ~$20/mo per campaign in carrier fees, approval typically 4–7 business days.
- If you've been rejected before, we cover the common traps in what actually gets approved and the SHAFT rejection rewrite.
- Optional brand vetting ($40 Standard / $100 Enhanced, one-time) for higher throughput — most senders don't need it, and we say so in is brand vetting worth $40.
To be clear: 10DLC is the sender's ultimate responsibility no matter who you use. We just remove the busywork and the guessing.
Compliance that runs without you thinking about it
Beyond registration, ReadySMS bakes in the guardrails that keep you out of trouble:
- Automatic STOP/opt-out handling — an inbound STOP propagates so that contact can't be messaged again across campaigns.
- Quiet-hours enforcement — sends are held outside permitted local hours based on the recipient's area, which reduces TCPA exposure.
- Litigator / DNC scrubbing — known TCPA-litigator and DNC numbers can be screened before send. Standalone scrub is $0.005/contact; one bad text can run $500–$1,500 in statutory exposure. The math is brutal and we lay it out in one TCPA lawsuit vs scrubbing your whole list.
- Consent / attestation capture for bulk and API sends, building an audit trail.
None of this makes you lawsuit-proof — nothing does. It just means the obvious mistakes are caught by default instead of by hope.
The dialer ClickSend doesn't have
This is a category difference. ReadySMS includes an outbound power dialer: manual + queue dial, call recording, voicemail drop, transfer/barge/whisper, auto-text, and speed-to-lead auto-dial on new leads.
- Free — $0/mo, 1 agent, 1 number, 500 minutes/mo, then $0.06/min
- Pro — $29/agent/mo, up to 3 agents, $0.05/min
- Team — $69/agent/mo, unlimited agents, $0.0375/min, speed-to-lead and lead routing
The combination that gateways can't match: a new lead comes in, an instant SMS fires, and the dialer auto-calls within the first few minutes — when contact rates are highest. Full pricing lives on the pricing page.
So which should you pick?
Stay with (or choose) ClickSend if: your volume is heavily international, you need email/fax/postal letters from one API, and you're a developer who's happy owning the inbox, campaign, and compliance layers yourself. It's a capable gateway for exactly that.
Switch to ReadySMS if: you send US SMS at volume and want it cheap on registered routes; you want a real inbox, campaigns, and a dialer instead of building them; you run on GoHighLevel; or you'd rather have 10DLC and TCPA guardrails handled than read carrier docs at midnight.
The honest summary: ClickSend is a multi-channel pipe; ReadySMS is a US texting platform with the surrounding tooling included. Different jobs.
If you want to see your real numbers, the cost calculator takes about a minute, and the 20 free test sends (plus a $25 credit when you register for 10DLC) let you send actual messages before deciding. That's a cheaper experiment than a migration you regret. Compare it against your current ClickSend bill and let the math decide.