What Claude (Anthropic) with web search answered for email marketing software (agencies) on 2026-09-11

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-11

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

The question asked, verbatim: best email marketing software for agencies

Brands named, in the order the engine gave

1. Klaviyo mentioned
   Klaviyo - if your clients are ecommerce.
2. Shopify mentioned
   Nothing else comes close for Shopify/WooCommerce clients.
3. WooCommerce mentioned
   Nothing else comes close for Shopify/WooCommerce clients.
4. ActiveCampaign mentioned
   ActiveCampaign - the best general-purpose pick for mixed client rosters.
5. Campaign Monitor mentioned
   Campaign Monitor - the classic purpose-built agency platform.
6. Brevo mentioned
   Brevo - best value when you manage lots of low-frequency senders.
7. BigMailer mentioned
   BigMailer - pick this if true white-label is the requirement.
8. you're mentioned
   Less polished than the big names, but it's the one where the client genuinely never learns what you're running.
9. MailerLite mentioned
   MailerLite - for small clients and tight budgets.
10. HubSpot mentioned
    HubSpot - only if you're selling retainers, not email.

Sources the engine cited

The answer, as recorded

The honest short answer: for agencies, the deciding factor isn't email features - it's whether the platform gives you real client sub-accounts, separate deliverability reputations per client, and reporting you can hand a client without rebuilding it. Here's who I'd actually name, in order: **1. Klaviyo - if your clients are ecommerce.** Nothing else comes close for Shopify/WooCommerce clients. Deep product/order data, revenue attribution per flow (which is the number that keeps you retained), and a well-run agency partner program with a partner portal for managing client accounts. Standard pricing runs about $150/mo at 10k contacts; agency partner terms are quoted, not listed. Downside: it's overkill and overpriced for B2B or service-business clients. **2. ActiveCampaign - the best general-purpose pick for mixed client rosters.** Strongest automation builder in the mid-market, built-in CRM so you can service B2B clients too, and genuinely good deliverability. Agency access is via the Enterprise tier plus their Reseller/Agency partner program, with sub-accounts and custom quoted pricing - you have to talk to their partnerships team. List price runs ~$189/mo at 10k contacts, so margin depends on the partner discount you negotiate. **3. Campaign Monitor - the classic purpose-built agency platform.** It's the one designed around your business model rather than retrofitted: client sub-accounts, branded/white-labeled login and billing, template section locking so clients can't wreck your designs, send approval workflows, and a revenue-share partner program. Automation is weaker than ActiveCampaign's, but for agencies doing high-volume newsletter and campaign work it's the least friction. **4. Brevo - best value when you manage lots of low-frequency senders.** Priced on emails sent rather than contacts stored, which is dramatically cheaper for clients with big dormant lists. Sub-account management, custom DKIM, logo removal, plus SMS and WhatsApp. Their agency-oriented plans start around $449/mo. **5. BigMailer - pick this if true white-label is the requirement.** The most natively white-label option out there: host it on your own domain with zero vendor branding anywhere in the UI, multi-brand management, built-in list validation, and you set your own client pricing. Less polished than the big names, but it's the one where the client genuinely never learns what you're running. **6. MailerLite - for small clients and tight budgets.** Clean builder, fast to set up, $12-25/mo per client. Not an agency platform (no meaningful sub-account layer), so you'd be managing separate logins - fine at 3-5 small clients, painful at 20. **7. HubSpot - only if you're selling retainers, not email.** Worth naming because their Solutions Partner program is the most lucrative referral/resell economics in the category, and it pulls you into CRM and RevOps work. But as an email tool alone it's poor value. **What I'd do:** ecommerce roster → Klaviyo. Mixed B2B/B2C roster → ActiveCampaign. High client count where operational overhead is the real cost → Campaign Monitor or BigMailer. And whichever you choose, insist on separate sending domains and dedicated IPs per client - one client's bad list should never torch another's inbox placement. One caveat on the sources: much of the "best for agencies" content online is affiliate-driven, so treat the rankings in those roundups as leads to verify, not verdicts. The agency-tier pricing for ActiveCampaign and Klaviyo in particular is quote-only, so get real numbers before committing. Sources: - [11 Best Email Marketing Software for Agencies (Leadsie)](https://www.leadsie.com/blog/best-email-marketing-software) - [Email Marketing Software for Agencies (EmailToolTester)](https://www.emailtooltester.com/en/blog/email-marketing-software-for-agencies/) - [An Agency's Guide to Email Marketing (Campaign Monitor)](https://www.campaignmonitor.com/resources/guides/email-marketing-and-automation-for-agencies/) - [11 White-Label Email Marketing Platforms (Campaign Monitor)](https://www.campaignmonitor.com/blog/email-marketing/white-label-email-marketing-platforms/) - [9 Best White-Label Email Marketing Platforms (BigMailer)](https://www.bigmailer.io/white-label-email-marketing-platforms/) - [ActiveCampaign vs Klaviyo: Pricing & Verdict (RealCostLabs)](https://realcostlabs.com/comparisons/activecampaign-vs-klaviyo/) - [ActiveCampaign Pricing 2026 (BuyerSprint)](https://buyersprint.com/2026/05/08/activecampaign-pricing-2026/) - [Brevo Pricing 2026 (EmailVendorSelection)](https://www.emailvendorselection.com/brevo-pricing/) - [Brevo vs MailerLite (Dreamlit)](https://dreamlit.ai/blog/brevo-vs-mailerlite)

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.