# What Claude (Anthropic) with web search answered for email marketing software (agencies) on 2026-09-18

## In short

On 2026-09-18, Claude (Anthropic) with web search was asked "best email marketing software for agencies". It named 9 brands; the first six, in order, were Klaviyo, Shopify, WooCommerce, ActiveCampaign, Campaign Monitor and Customer.io.

| Fact | Value |
| --- | --- |
| Question | best email marketing software for agencies |
| Asked on | 2026-09-18 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 9 |
| Sources cited | 9 |
| Audience | agencies |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-18 |

Page: https://bikoosh.com/answers/s/email-marketing-software-agencies-2026-09-18
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-18 through Claude (Anthropic) with web search (model claude-opus-5).

> The honest answer is that "best for agencies" splits by what your clients actually are. Here's how I'd rank them:
> 
> **1. Klaviyo - if your clients are ecommerce.** This is the default and it's not especially close. Deep Shopify/WooCommerce integration, revenue attribution per flow (which is how you justify your retainer), and a genuinely strong partner program with certifications and a client directory that sends you leads. Two real cautions: in 2025 they moved to billing on *all active profiles* in the database rather than contacts emailed, so bloated lists get expensive, and there's no annual discount to soften it.
> 
> **2. ActiveCampaign - if your clients are B2B, SaaS, or services.** Better automation logic than Klaviyo (branching, conditional waits, CRM built in), and it has a proper agency/partner tier with multi-account management and reseller margins. Around 10k contacts it runs ~$189/mo vs Klaviyo's ~$150, but you get 20% off annual, which Klaviyo doesn't offer.
> 
> **3. Campaign Monitor - if you want a true agency dashboard.** Purpose-built client sub-accounts under one login, granular permissions, white-label branding, and you can bill the client directly through the platform a

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Klaviyo | recommended |
| 2 | Shopify | recommended |
| 3 | WooCommerce | recommended |
| 4 | ActiveCampaign | recommended |
| 5 | Campaign Monitor | recommended |
| 6 | Customer.io | recommended |
| 7 | BigMailer | recommended |
| 8 | API-based | recommended |
| 9 | Mailchimp | recommended |

## Sources the engine cited

- https://www.emailtooltester.com/en/blog/email-marketing-software-for-agencies/ (other)
- https://www.leadsie.com/blog/best-email-marketing-software (other)
- https://www.bigmailer.io/white-label-email-marketing-platforms/ (vendor)
- https://www.campaignmonitor.com/blog/email-marketing/white-label-email-marketing-platforms/ (vendor)
- https://www.campaignmonitor.com/resources/guides/email-marketing-and-automation-for-agencies/ (vendor)
- https://realcostlabs.com/comparisons/activecampaign-vs-klaviyo/ (other)
- https://automationatlas.io/answers/klaviyo-pricing-explained-2026/ (other)
- https://www.moengage.com/blog/klaviyo-pricing/ (other)
- https://www.etropo.com/marketing-tool-prices/marketing-automation (other)

The question page: https://bikoosh.com/answers/q/email-marketing-software/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.