# What Claude (Anthropic) with web search answered for sms marketing platforms (agencies) on 2026-09-14

## In short

On 2026-09-14, Claude (Anthropic) with web search was asked "best sms marketing platforms for agencies". It named 11 brands, in this order: Klaviyo, Shopify, BigCommerce, Attentive, Postscript, GoHighLevel.

| Fact | Value |
| --- | --- |
| Question | best sms marketing platforms for agencies |
| Asked on | 2026-09-14 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 11 |
| Sources cited | 8 |
| Audience | agencies |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-14 |

Page: https://bikoosh.com/answers/s/sms-marketing-platforms-agencies-2026-09-14
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-14 through Claude (Anthropic) with web search (model claude-opus-5).

> Searched - here's how I'd actually rank these. "Agency" splits into two very different buckets (ecommerce retainer work vs. local/lead-gen white-label), so the order below reflects that.
> 
> ## If your clients are ecommerce brands
> 
> **1. Klaviyo** - My default recommendation. Email and SMS share one profile, one segment builder, one attribution model, which matters enormously when you're reporting client ROI. The agency partner program is the most mature in the space, and the Shopify/BigCommerce data depth means less custom work per client. Weakness: SMS pricing gets expensive at high volume vs. dedicated SMS tools. ([Klaviyo](https://www.klaviyo.com/blog/best-sms-marketing-platforms))
> 
> **2. Attentive** - Where to go when the client is big enough to justify managed service. Their Signature Agency Partner tier includes revenue share you can either keep as margin or pass through to win the deal, plus SMS/email/RCS/push in one place. Quote-based pricing and annual commitments, so it's a bad fit for small clients. ([Attentive Partners](https://www.attentive.com/partners), [comparison](https://www.sequenzy.com/versus/postscript-vs-attentive))
> 
> **3. Postscript** - The scrappy pick for Shopif

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Klaviyo | recommended |
| 2 | Shopify | mentioned |
| 3 | BigCommerce | mentioned |
| 4 | Attentive | mentioned |
| 5 | Postscript | mentioned |
| 6 | GoHighLevel | mentioned |
| 7 | Salesmsg | mentioned |
| 8 | HubSpot | mentioned |
| 9 | SimpleTexting | mentioned |
| 10 | EZ Texting | mentioned |
| 11 | Twilio | mentioned |

## Sources the engine cited

- https://www.klaviyo.com/blog/best-sms-marketing-platforms (vendor)
- https://www.attentive.com/partners (vendor)
- https://www.sequenzy.com/versus/postscript-vs-attentive (other)
- https://taylorsicard.com/blog/attentive-vs-postscript-pricing (other)
- https://a2pgenius.com/blog/highlevel-a2p-registration-guide-for-agencies/ (other)
- https://www.salesmessage.com/blog/best-sms-marketing-software (other)
- https://simpletexting.com/white-label/ (vendor)
- https://www.twilio.com/docs/messaging/compliance/a2p-10dlc/onboarding-isv (vendor)

The question page: https://bikoosh.com/answers/q/sms-marketing-platforms/agencies

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.