What Claude (Anthropic) with web search answered for email marketing software (agencies) on 2026-10-04

Claude (Anthropic) with web search claude-opus-5 asked 2026-10-04

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. ActiveCampaign recommended
   ActiveCampaign - My default recommendation for a general-purpose agency.
2. Klaviyo compared
   Also cheaper than Klaviyo at most contact tiers.
3. Campaign Monitor recommended
   Campaign Monitor (Marigold) - The most purpose-built agency architecture on the list: one dashboard with client sub-accounts, granular per-client permissions, per-client branding, and - the useful part - you can either charge their base rates or mark them up, and they'll invoice your clients directl
4. Shopify recommended
   It's what Shopify/DTC brands expect, the revenue attribution reporting is what wins client renewals, and your clients will often already be on it.
5. Brevo recommended
   Brevo - The value pick.
6. BigMailer recommended
   BigMailer - Niche but worth knowing: built specifically for agencies and franchises managing many brands, with sub-account architecture, white-label hosting, and email validation on every send.
7. MailerLite recommended
   MailerLite - The one I'd pick for clients who will log in themselves.
8. HubSpot recommended
   HubSpot - Only if you're selling retainers that include CRM, sales enablement, and reporting, not just email.
9. Tapfiliate mentioned
   - 17 Best Agency Partner Programs in 2026 - Tapfiliate (https://tapfiliate.com/blog/best-agency-partner-programs-gp/)

Sources the engine cited

The answer, as recorded

The honest answer is that "best for agencies" splits by what your clients are, because the agency-specific features (sub-accounts, markup billing, white label) and the features your clients actually need rarely live in the same tool. Here's the order I'd actually give: **1. ActiveCampaign** - My default recommendation for a general-purpose agency. Deep automation plus a built-in CRM means you can serve B2B, services, and local clients from one platform instead of learning three. Critically, it has a real reseller program with a reported 25-55% discount, which is the only agency-pricing model that reliably makes money (markup on a discount beats a referral commission). Also cheaper than Klaviyo at most contact tiers. **2. Campaign Monitor (Marigold)** - The most purpose-built agency architecture on the list: one dashboard with client sub-accounts, granular per-client permissions, per-client branding, and - the useful part - you can either charge their base rates or mark them up, and they'll invoice your clients directly on your behalf. If your main pain is admin overhead across 15 clients rather than automation depth, start here. Its templates/design tooling are also the strongest, which matters for design-led shops. **3. Klaviyo** - Non-negotiable if your clients are ecommerce. It's what Shopify/DTC brands expect, the revenue attribution reporting is what wins client renewals, and your clients will often already be on it. Don't fight this one; agencies that push ecommerce clients off Klaviyo to save money generally regret it. **4. Brevo** - The value pick. Sub-account management from a central admin account with separate IPs, API keys, and permissions per client, at meaningfully lower cost than the above. Good when you're running many low-volume clients where per-contact pricing would eat the retainer. **5. BigMailer** - Niche but worth knowing: built specifically for agencies and franchises managing many brands, with sub-account architecture, white-label hosting, and email validation on every send. If you're managing 20+ brands or multi-location franchise clients, it's designed for exactly that shape of problem. **6. MailerLite** - The one I'd pick for clients who will log in themselves. Easiest UI and good support, so it generates the fewest "how do I do this" emails to your team. Weaker on agency tooling. **7. HubSpot** - Only if you're selling retainers that include CRM, sales enablement, and reporting, not just email. Overkill and overpriced as an email tool alone, but it's the right answer when the deliverable is "revenue ops," and the agency partner program is mature. Two things I'd flag before you buy: get dedicated IPs or at minimum per-client sending domains, because one client's bad list will damage deliverability for every other client on a shared setup - this is the failure mode that actually loses agencies accounts. And check whether the platform lets you transfer an account to a client cleanly when they leave; if it doesn't, offboarding becomes a hostage negotiation. Sources: - [Email Marketing Software for Agencies: 10 Top Platforms for 2026 - EmailToolTester](https://www.emailtooltester.com/en/blog/email-marketing-software-for-agencies/) - [11 Best Email Marketing Software for Agencies in 2026 - Leadsie](https://www.leadsie.com/blog/best-email-marketing-software) - [10 Best Email Marketing Software For Agencies In 2026 - The Digital Project Manager](https://thedigitalprojectmanager.com/tools/email-marketing-software-for-agencies/) - [17 Best Agency Partner Programs in 2026 - Tapfiliate](https://tapfiliate.com/blog/best-agency-partner-programs-gp/) - [ActiveCampaign vs Klaviyo (2026): Pricing & Verdict - RealCostLabs](https://realcostlabs.com/comparisons/activecampaign-vs-klaviyo/) - [We Reviewed 11 Email Marketing Platforms for Agencies - Campaign Monitor](https://www.campaignmonitor.com/blog/email-marketing/email-marketing-platforms-for-agencies/) - [Set up clients to pay for themselves - Campaign Monitor Help](https://help.createsend.com/admin/set-up-clients-to-pay-for-themselves) - [The Email Marketing for Agencies Guide - BigMailer](https://www.bigmailer.io/email-marketing-for-agencies-guide/)

Near this answer

The same question, recorded on other dates: 2026-10-02, 2026-09-30, 2026-09-26, 2026-09-24, 2026-09-21, 2026-09-18, 2026-09-15, 2026-09-13, 2026-09-11, 2026-09-09, 2026-09-07.

email marketing software, asked for other audiences: small businesses (asked 2026-10-04).

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.