Campaign Monitor: Email marketing platform
Campaign Monitor is an Email marketing platform founded in 2004, headquartered in Australia. Starting at $11/mo, it targets agencies that resell email under their own markup and have each client billed directly. Our verdict: Ease 4.5 and service 4.5, and unlimited sending from $19. Watch for: No prices on the pricing page, no address for the SMTP relay. Rated 6.4/10 overall across ease of use, deliverability, and pricing value.
What is Campaign Monitor?
Campaign Monitor was written in Sydney in 2004 by two web designers, David Greiner and Ben Richardson, for their own agency clients. It stayed bootstrapped and profitable every quarter for a decade before taking US$250 million from Insight Venture Partners in April 2014, at the time the largest venture investment in an Australian technology company.
That agency origin is still visible in the product. A reseller sets a markup per client account, and Campaign Monitor bills the client directly and remits the margin monthly — MarkupPercentage and ClientPays are API fields, not a back-office arrangement. The API itself still answers on api.createsend.com.
Explore Campaign Monitor on SMTPedia
Frequently asked questions
Is Campaign Monitor worth it in 2026?
Our full editorial review covers pricing, deliverability, ease of use, support quality, and API/MCP maturity. Read the Campaign Monitor review →
How much does Campaign Monitor cost?
All pricing tiers, hidden fees, refund policy, and the true cost per email are broken down in the pricing tab. See Campaign Monitor pricing →
What are the best alternatives to Campaign Monitor?
Campaign Monitor compared with its closest competitors by use case, pricing, and switching cost. See alternatives →
What are the SMTP settings for Campaign Monitor?
Hostnames, ports, authentication, rate limits, and DKIM/SPF configuration for Campaign Monitor. See SMTP settings →
Does Campaign Monitor have an official MCP server?
Our API tab covers Campaign Monitor's REST API version, SDKs, rate limits, and MCP server support (official, community, and commercial wrappers). See API + MCP →
This review follows our email infrastructure testing methodology. We disclose affiliate relationships in our editorial independence policy.
