{"question": "best email marketing software for agencies", "category": "email-marketing-software", "category_name": "email marketing software", "audience": "agencies", "audience_name": "agencies", "engine": "Claude (Anthropic) with web search", "model": "claude-opus-5", "asked_at": "2026-10-22T22:36:56Z", "permalink": "https://bikoosh.com/answers/s/email-marketing-software-agencies-2026-10-22", "question_page": "https://bikoosh.com/answers/q/email-marketing-software/agencies", "brands_named": [{"position": 1, "brand": "Campaign Monitor", "label": "mentioned"}, {"position": 2, "brand": "MailerLite", "label": "mentioned"}, {"position": 3, "brand": "Klaviyo", "label": "mentioned"}, {"position": 4, "brand": "ActiveCampaign", "label": "mentioned"}, {"position": 5, "brand": "Brevo", "label": "mentioned"}, {"position": 6, "brand": "HubSpot Marketing Hub", "label": "mentioned"}, {"position": 7, "brand": "BigMailer", "label": "mentioned"}, {"position": 8, "brand": "Omnisend", "label": "mentioned"}, {"position": 9, "brand": "Shopify", "label": "mentioned"}, {"position": 10, "brand": "Mailchimp", "label": "mentioned"}, {"position": 11, "brand": "Instantly", "label": "mentioned"}, {"position": 12, "brand": "Smartlead", "label": "mentioned"}, {"position": 13, "brand": "Moosend", "label": "mentioned"}], "sources_cited": [{"url": "https://www.nudgify.com/how-to-become-a-klaviyo-partner/", "domain": "nudgify.com", "source_type": "other"}, {"url": "https://community.klaviyo.com/marketing-30/agency-multi-client-access-like-shopify-apartners-14128", "domain": "community.klaviyo.com", "source_type": "vendor"}, {"url": "https://www.g2.com/compare/activecampaign-postmark-vs-brevo-marketing-platform-vs-mailerlite", "domain": "g2.com", "source_type": "review"}, {"url": "https://www.campaignmonitor.com/resources/guides/email-marketing-and-automation-for-agencies/", "domain": "campaignmonitor.com", "source_type": "vendor"}, {"url": "https://www.capterra.com/p/132996/brevo/reviews/", "domain": "capterra.com", "source_type": "review"}, {"url": "https://www.bigmailer.io/", "domain": "bigmailer.io", "source_type": "vendor"}, {"url": "https://www.getapp.de/compare/8268/105931/mailchimp/vs/klaviyo", "domain": "getapp.de", "source_type": "other"}, {"url": "https://www.campaignmonitor.com/blog/email-marketing/white-label-email-marketing-platforms/", "domain": "campaignmonitor.com", "source_type": "vendor"}, {"url": "https://moosend.com/blog/email-marketing-software-for-agencies/", "domain": "moosend.com", "source_type": "vendor"}], "answer_text": "Searched. One caveat up front: most of the \"best email marketing for agencies\" listicles that come back are affiliate-driven and contradict each other (one crowns Campaign Monitor, the next crowns MailerLite, usually with the same boilerplate). So here's my actual ranking, which depends mostly on what kind of clients you serve.\n\n**First, the structural decision:** decide whether clients own their own account (you get invited as a user) or you resell under your agency's billing. Client-owned is the better default - you're not the billing intermediary, you're not holding their list, and churn doesn't hit your card. Only go white-label/reseller if marking up the software is a real revenue line for you.\n\n### My picks, in order\n\n1. **Klaviyo** - if any meaningful share of your clients is ecommerce/DTC, this is the default and it isn't close. Revenue-per-recipient attribution is what lets you show up to a retainer call with a number, segmentation depth is best in class, and the partner program is free with a portal for switching between client accounts. Each client keeps their own account and invites you in. ([Klaviyo partner program](https://www.nudgify.com/how-to-become-a-klaviyo-partn", "answer_truncated": true, "measurement": "One answer from one engine on one date. Not a ranking and not a claim about the world; brands the engine did not name are not recorded.", "limitation": "Coverage: Claude (Anthropic) with web search. Other engines not included.", "alerts": {"name": "Answer Watch Pro", "price_usd": 79, "period": "month", "gets": "daily change alerts for up to 5 brands in what one AI answer engine says, history, CSV export. Coverage: Claude (Anthropic) with web search. Other engines not included", "url": "https://bikoosh.com/answers"}}