What Claude (Anthropic) with web search answered for sms marketing platforms (agencies) on 2026-09-08

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-08

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. GoHighLevel mentioned
   GoHighLevel - The default answer for most marketing agencies.
2. Twilio mentioned
   Twilio runs underneath at roughly $0.0075/SMS US, rebillable to clients at your own markup - that resale margin is the real business case.
3. ProTexting / SmsTools / UltraSMSScript mentioned
   ProTexting / SmsTools / UltraSMSScript - The narrower white-label SMS specialists.
4. Shopify mentioned
   If your clients are ecommerce (Shopify DTC)
5. Postscript mentioned
   Postscript - The one I'd name first here.
6. Klaviyo mentioned
   Klaviyo - Pick it when the client already runs Klaviyo email.
7. Attentive mentioned
   Attentive - Best-in-class deliverability and list growth, but quote-based enterprise contracts landing around $10-20K+ effective at typical volumes.
8. Salesmsg / EZ Texting mentioned
   Salesmsg / EZ Texting - Salesmsg's multi-org environment and EZ Texting's managed accounts are solid middle-ground picks for conversational/two-way, CRM-native work where you don't need white-labeling.
9. EZ Texting mentioned
   Salesmsg / EZ Texting - Salesmsg's multi-org environment and EZ Texting's managed accounts are solid middle-ground picks for conversational/two-way, CRM-native work where you don't need white-labeling.

Sources the engine cited

The answer, as recorded

The honest framing first: "best" splits along what kind of agency you are. Here's what I'd actually recommend, in order. ## If you want to resell texting under your own brand **1. GoHighLevel** - The default answer for most marketing agencies. Full white-label (your logo, your domain), unlimited sub-accounts on the $297 Unlimited plan, and SMS is bundled into a broader CRM/funnel/automation stack so you're selling a platform, not just texts. Twilio runs underneath at roughly $0.0075/SMS US, rebillable to clients at your own markup - that resale margin is the real business case. Downside: it's a generalist tool, and deliverability tuning is on you. **2. ProTexting / SmsTools / UltraSMSScript** - The narrower white-label SMS specialists. Client, credit, and keyword management in one admin panel, your branding, your pricing. Worth looking at if you want SMS as a standalone product line rather than a bolt-on to a CRM. UltraSMSScript in particular is self-hosted/licensed rather than per-seat SaaS, which changes the unit economics at volume. ## If your clients are ecommerce (Shopify DTC) **3. Postscript** - The one I'd name first here. Shopify-native, transparent published pricing (~$0.007/text plus carrier fees, plans from $25/mo), and per-store accounts you can manage without a contract negotiation each time. Multi-client agency ops are genuinely practical. **4. Klaviyo** - Pick it when the client already runs Klaviyo email. Unified profiles across email and SMS beat any two-tool stack for segmentation, and the agency partner program is mature. If they're not already on Klaviyo, the pull is weaker. **5. Attentive** - Best-in-class deliverability and list growth, but quote-based enterprise contracts landing around $10-20K+ effective at typical volumes. Rigid and expensive for multi-client agency work. Reserve it for one or two large accounts, not your book. ## If you want raw infrastructure **6. Twilio** - Maximum control, you build the UI. Note the agency-specific catch: registering 10DLC on behalf of a different legal entity requires a Reseller ID with TCR, and Twilio's Trust Hub reseller flow is opaque with week-plus campaign approval waits. Budget for that friction. **7. Salesmsg / EZ Texting** - Salesmsg's multi-org environment and EZ Texting's managed accounts are solid middle-ground picks for conversational/two-way, CRM-native work where you don't need white-labeling. **Practical take:** most agencies should start at GoHighLevel for the resale margin and white-label, and keep Postscript in the back pocket for Shopify clients. The thing that will actually bite you isn't feature lists - it's 10DLC brand and campaign registration per client, which you should price into onboarding and start weeks before the first send. Sources: - [Best SMS Marketing Software in 2026: 20 Platforms Compared - Salesmessage](https://www.salesmessage.com/blog/best-sms-marketing-software) - [25+ Best White-Label Tools for Agencies in 2026 - TextUs](https://textus.com/blog/white-label-tools-for-agencies) - [White Label SMS & MMS Marketing Platform - ProTexting](https://www.protexting.com/sms-white-label.html) - [White Label SMS Platform & Reseller Program - SmsTools](https://www.smstools.com/en/sms-reseller) - [SMS Reseller White Label Software - UltraSMSScript](https://www.ultrasmsscript.com/new-service-providers/) - [Attentive vs Postscript Pricing: SMS Cost 2026 - Taylor Sicard](https://taylorsicard.com/blog/attentive-vs-postscript-pricing) - [Postscript vs Attentive (2026) - Sequenzy](https://www.sequenzy.com/versus/postscript-vs-attentive) - [The Best SMS Marketing Platforms of 2026 - Klaviyo](https://www.klaviyo.com/blog/best-sms-marketing-platforms) - [10DLC (10-digit long code numbers) - Twilio](https://www.twilio.com/en-us/phone-numbers/a2p-10dlc) - [The Twilio SMS Alternative for 10DLC - Telgorithm](https://www.telgorithm.com/telgorithm-vs-twilio)

Markdown edition · 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.