What Claude (Anthropic) with web search answered for sms marketing platforms (agencies) on 2026-10-16

Claude (Anthropic) with web search claude-opus-5 asked 2026-10-16

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best sms marketing platforms for agencies

Brands named, in the order the engine gave

1. Klaviyo mentioned
   Klaviyo - My default first pick.
2. Postscript compared
   Postscript - Better than Klaviyo if your clients are Shopify-only and SMS is the main event rather than an add-on.
3. Shopify compared
   Postscript - Better than Klaviyo if your clients are Shopify-only and SMS is the main event rather than an add-on.
4. BigCommerce mentioned
   Downside is the flip side of its strength: it's Shopify-exclusive, so it's a dead end if any client is on BigCommerce, WooCommerce, or custom.
5. WooCommerce mentioned
   Downside is the flip side of its strength: it's Shopify-exclusive, so it's a dead end if any client is on BigCommerce, WooCommerce, or custom.
6. Ringly mentioned
   (Ringly (https://ringly.io/blog/postscript-alternatives))
7. Attentive mentioned
   Attentive - Where I'd go for enterprise-volume clients only.
8. GoHighLevel mentioned
   GoHighLevel (Agency Pro / SaaS Mode, ~$497/mo) - Honestly, for most agencies asking this question, this is the answer.
9. Twilio mentioned
   It's the only option here built for the agency as the customer: true sub-accounts per client, white-label under your own brand, client self-signup, and Twilio rebilling with a markup multiplier so SMS becomes a margin line instead of a cost line.
10. EZ Texting mentioned
    EZ Texting or SlickText - The pragmatic low-end: one cheap account per client, no agency layer.
11. SlickText mentioned
    EZ Texting or SlickText - The pragmatic low-end: one cheap account per client, no agency layer.

Sources the engine cited

The answer, as recorded

## My short answer It depends on one fork: **do your clients sell ecommerce products, or are they local/service businesses?** That single question changes the answer completely, so here's both, in the order I'd actually recommend them. ### If you run an ecommerce / DTC agency **1. Klaviyo** - My default first pick. SMS and email live on the same customer profile, so segmentation and attribution don't fragment across two tools, and the agency partner program (tiered, with referral/rev-share) is the most mature in the space. The real caveat: pricing scales hard past ~10k contacts, and the SMS-only experience is weak - you need clients on both channels to get the value. ([Arctic Leaf comparison](https://www.arcticleaf.io/blog/learning-center/klaviyo-attentive-postscript)) **2. Postscript** - Better than Klaviyo if your clients are Shopify-only and SMS is the main event rather than an add-on. Cleaner, faster to execute in, strong agency partner program. Downside is the flip side of its strength: it's Shopify-exclusive, so it's a dead end if any client is on BigCommerce, WooCommerce, or custom. ([Ringly](https://ringly.io/blog/postscript-alternatives)) **3. Attentive** - Where I'd go for enterprise-volume clients only. Advanced AI, RCS, cross-channel orchestration, and hands-on strategic support - but premium pricing and annual contracts make it wrong for a portfolio of small accounts. ([Ringly](https://www.ringly.io/blog/attentive-alternatives)) ### If you run a generalist / local-business agency **4. GoHighLevel (Agency Pro / SaaS Mode, ~$497/mo)** - Honestly, for most agencies asking this question, this is the answer. It's the only option here built *for the agency as the customer*: true sub-accounts per client, white-label under your own brand, client self-signup, and Twilio rebilling with a markup multiplier so SMS becomes a margin line instead of a cost line. The agency dashboard tracks Twilio cost vs. revenue vs. margin per sub-account. Tradeoff: it's a whole CRM you now have to own, and the SMS marketing features are shallower than Klaviyo's. ([GHL Experts pricing](https://ghlexperts.com/gohighlevel-plans-pricing), [rebilling guide](https://consultevo.com/gohighlevel-twilio-rebilling-setup/)) **5. Twilio** - If you have an engineer. Subaccounts API gives you real client isolation and the best per-message economics at volume, and you keep the whole margin. You're building the campaign UI, compliance workflow, and billing reconciliation yourself - that's months of work, so only worth it above real scale. **6. EZ Texting or SlickText** - The pragmatic low-end: one cheap account per client, no agency layer. EZ Texting starts ~$25/mo and bundles 10DLC registration free; SlickText starts ~$29/mo and charges ~$10/mo extra for 10DLC. Overhead grows linearly with clients, so treat these as a starting point, not a system. ([EZ Texting vs. SlickText](https://www.eztexting.com/compare/slicktext.md.txt), [Capterra: SlickText](https://www.capterra.com/p/155430/SlickText-com/), [Sakari](https://www.capterra.com/p/176870/Sakari/pricing/)) ## Two things that matter more than the platform **10DLC registration is the actual risk.** Each client needs their own brand/campaign registration, and carrier rejections or filtering will cost you more client goodwill than any feature gap. Pick whoever handles 10DLC best for *your* client type - that's why I'd weight EZ Texting's free registration over SlickText's surcharge despite the similar sticker price. **Don't resell SMS at cost.** Whatever you choose, get sub-accounts and per-client billing separation from day one. Platforms without clean client separation make every new client a manual setup, which turns growth into linear overhead instead of leverage. One flag on sourcing: the "best SMS platforms for agencies" search space is unusually full of low-quality SEO content and affiliate listicles. I leaned on my own knowledge of these products plus the more credible sources above, and I'd verify current pricing directly with vendors before you commit - published figures move frequently. Sources: - [Arctic Leaf - Klaviyo vs Attentive vs Postscript](https://www.arcticleaf.io/blog/learning-center/klaviyo-attentive-postscript) - [Ringly - Postscript alternatives](https://ringly.io/blog/postscript-alternatives) - [Ringly - Attentive alternatives](https://www.ringly.io/blog/attentive-alternatives) - [GHL Experts - GoHighLevel plans & pricing](https://ghlexperts.com/gohighlevel-plans-pricing) - [ConsultEvo - GoHighLevel Twilio rebilling setup](https://consultevo.com/gohighlevel-twilio-rebilling-setup/) - [EZ Texting vs. SlickText](https://www.eztexting.com/compare/slicktext.md.txt) - [Capterra - SlickText](https://www.capterra.com/p/155430/SlickText-com/) - [Capterra - Sakari pricing](https://www.capterra.com/p/176870/Sakari/pricing/) - [SlickText - best SMS marketing platforms](https://www.slicktext.com/blog/2025/10/best-sms-marketing-platforms/)

Near this answer

The same question, recorded on other dates: 2026-10-14, 2026-10-10, 2026-10-08, 2026-10-06, 2026-10-03, 2026-10-01, 2026-09-29, 2026-09-27, 2026-09-25, 2026-09-23, 2026-09-20.

sms marketing platforms, asked for other audiences: small businesses (asked 2026-10-16).

Other categories with a recorded answer: affiliate marketing platforms, brand design agencies, content marketing agencies, customer review management software.

Markdown edition · JSON record · the question page, with every recording · Answer Watch · AEO Watch

Answer Watch records what one AI answer engine said on one date, nothing more. Each page names the engine and the model, carries the date the question was asked, and lists the brands that appeared in the answer in the order the engine gave them, with the sources it cited. It is a measurement, not a ranking, not a recommendation and not a claim about the world. Brands that did not appear in an answer are not named on any public page. Coverage: Claude (Anthropic) with web search. Other engines not included.