Campaign Monitor

What Is Campaign Monitor?

Campaign Monitor is an email-marketing platform known for design-focused templates and a polished, drag-and-drop email builder that lets marketers create visually refined campaigns without writing HTML. It positions itself toward brands, agencies, and marketing teams that care about how their emails look, pairing an approachable editor with list management, segmentation, automation, and analytics so that a single tool can handle the full cycle of building a list, designing a campaign, sending it, and measuring the results.

In plain terms, Campaign Monitor answers the question "how do we send beautiful, on-brand email at scale without a developer?" The product has long been recognized as one of the more design-led email services, with a template library and a builder that emphasize typography, imagery, and responsive layout. A team imports or grows a subscriber list, designs a campaign in the visual editor, segments the audience, schedules the send, and then reviews opens, clicks, and other engagement metrics in the reporting dashboard.

Campaign Monitor is part of a broader marketing-software group and has historically been popular with agencies because of features aimed at managing multiple clients, including client accounts and white-label options. That agency-friendly positioning, combined with the design focus, gives it a distinct identity in a crowded email market: it is less about deep ecommerce automation and more about helping brand and marketing teams ship attractive, well-targeted email.

It is important to be clear about what Campaign Monitor is and is not. It is not a browser extension, and it is not the website platform a company runs on. It is a hosted, third-party email-marketing service that sits alongside a site. A business can run on WordPress, Shopify, or a custom stack and hand its email to Campaign Monitor. That relationship is precisely why Campaign Monitor is detectable from the outside: the website embeds Campaign Monitor signup forms and scripts, and those assets, along with the domains Campaign Monitor uses for hosting forms and tracking links, leave recognizable fingerprints on the site and in the emails it sends.

Understanding the audience clarifies the product. Campaign Monitor targets marketers and agencies who value design quality, brand consistency, and straightforward campaign management over the complexity of an enterprise marketing suite. The promise is professional-looking, responsive email, segmented to the right audience and measured with clear reporting, delivered through an editor that a non-technical marketer can master quickly.

How Campaign Monitor Works

At a high level, Campaign Monitor works by helping you build a list, design a message, segment the audience, and automate or schedule the send. List building and management start with subscriber lists and custom fields. You import contacts, grow lists through hosted signup forms you embed on a website, and organize subscribers with fields and tags that later power segmentation. Each subscriber accumulates engagement history, opens, clicks, and campaign activity, that informs targeting.

The centerpiece is the email builder. Campaign Monitor's drag-and-drop editor lets marketers assemble responsive emails from content blocks, text, images, buttons, and layout sections, on top of a library of professionally designed templates. The emphasis on design means the output tends to render cleanly across email clients and devices, which is a large part of the platform's appeal. Teams can save brand templates so that every campaign stays consistent with established colors, fonts, and styles.

For targeting, Campaign Monitor provides segments and dynamic content. Marketers build segments from subscriber fields and behavior, for example "opened the last campaign," "located in a particular region," or "matches a custom attribute," and can vary content within a single email based on those segments. This lets one campaign speak differently to different parts of the list without building multiple separate sends.

Automation comes through journeys, Campaign Monitor's visual automation builder. A journey is a flow of triggers, conditions, delays, and email actions: a new subscriber joins a list, receives a welcome email, waits a few days, and then receives a follow-up based on whether they engaged. Journeys support branching so that behavior, opens, clicks, or field changes, can route subscribers down different paths, enabling welcome series, nurture sequences, and re-engagement campaigns that run automatically. Standard one-off campaigns and scheduled sends round out the options, and an analytics layer reports opens, clicks, unsubscribes, and other engagement metrics.

Because Campaign Monitor runs as a hosted service, the work is split between the visitor's browser, the marketer's account, and Campaign Monitor's infrastructure. The browser loads any embedded signup form and its script; the marketer designs and sends from the Campaign Monitor app; and Campaign Monitor's servers handle storage, segmentation, sending, deliverability, and link/open tracking. This division is what lets a lean marketing team run polished email programs without building or operating an email-sending platform of their own. For more on identifying this kind of marketing layer in general, our guide on how to find what email marketing platform a website uses covers the common signals across tools.

How to Tell if a Website Uses Campaign Monitor

Campaign Monitor leaves several reliable fingerprints. Because StackOptic analyzes a URL from the server side, it looks at the same signals you can check manually with browser tools, curl, or a detection extension.

Signup-form action URLs. The strongest on-site signal is an embedded Campaign Monitor signup form whose <form> action posts to a Campaign Monitor domain. Hosted forms commonly submit to a createsend.com address (Campaign Monitor's core domain), so inspecting a newsletter form and finding an action URL on createsend.com is close to definitive proof.

Form and script assets. Campaign Monitor's embedded forms and validation logic load JavaScript from Campaign Monitor's asset domains, historically js.createsend1.com and related createsend hosts. A script reference to a createsend1.com or createsend.com host in the page source or Network tab is a strong indicator.

Subscribe and hosted-page links. Many sites link to Campaign Monitor-hosted subscribe, preference, or confirmation pages. Links pointing at a createsend.com URL, or a custom subdomain that resolves to Campaign Monitor's hosting, reinforce detection.

Tracking and link domains in emails. If you can inspect an email the site sends, Campaign Monitor rewrites links through its click-tracking domain (such as a cmail / createsend tracking host) and includes an open-tracking pixel on its infrastructure. The link domains and headers in the email reveal Campaign Monitor as the sending platform, a useful confirmation beyond the website itself.

Here is how to check each signal yourself:

Method	What to do	What Campaign Monitor reveals
View Source	"View Page Source," search for createsend	Form action URLs and script references on Campaign Monitor domains
Browser DevTools	Open the Network tab and reload	Requests to *.createsend.com / js.createsend1.com
Inspect the form	Right-click a newsletter form, "Inspect"	A <form> action posting to createsend.com
curl -s	`curl -s https://example.com	grep -i createsend`
Email headers	Inspect an email's links and headers	Click-tracking and link domains operated by Campaign Monitor
Wappalyzer / BuiltWith	Run on the page or look up the domain	Identifies "Campaign Monitor" under email/marketing

A fast command-line check is curl -s https://example.com | grep -i "createsend". A match there, especially a form action on createsend.com or a createsend1.com script, is strong proof. For the broader methodology, see our guides on how to find what email marketing platform a website uses and how to find out what technology a website uses.

A few caveats make detection more robust. Some sites embed the Campaign Monitor form only on certain pages, a footer, a dedicated newsletter page, or a pop-up, so a bare homepage fetch may not show it; checking the footer and any subscribe page is the surest test. Others collect subscribers through a generic form and pass them to Campaign Monitor via the API or an integration, in which case the website itself may show no createsend asset, and the clearest evidence then comes from the emails the brand sends, where Campaign Monitor's link-tracking and open-pixel domains appear. Because no single tell is guaranteed, the dependable approach combines several at once: a createsend.com form action, a createsend1.com script, hosted subscribe links, and Campaign Monitor tracking domains in emails. Server-side analysis is well suited to reading the form actions and script references directly from the unmodified HTML, while inspecting a sample email confirms the sending side.

Key Features

• Design-focused email builder. A drag-and-drop editor and a library of professionally designed, responsive templates that render cleanly across clients.
• Brand templates. Saved brand styles and templates keep colors, fonts, and layouts consistent across every campaign.
• Segmentation and dynamic content. Build segments from fields and behavior and vary content within a single email per segment.
• Visual automation (journeys). A flowchart builder for welcome series, nurture sequences, and re-engagement with branching logic.
• Hosted signup forms. Embeddable forms that grow lists directly from a website and feed subscribers into the platform.
• Agency and client tools. Client accounts and white-label options for agencies managing email for multiple brands.
• Engagement analytics. Reporting on opens, clicks, unsubscribes, and campaign performance to guide optimization.

Pros and Cons

Pros

• Strong design tooling and templates that make polished, on-brand email easy to produce.
• Clean, responsive rendering across major email clients and devices.
• Agency-friendly features, including client accounts and white-labeling.
• Approachable for non-technical marketers while still supporting segmentation and automation.

Cons

• Pricing scales with list size and send volume, which can grow costly for large lists.
• Less depth in ecommerce-specific automation than stores-focused platforms.
• Fewer native integrations than some larger all-in-one marketing suites.
• Advanced personalization depends on well-structured subscriber data to work well.

Campaign Monitor vs Alternatives

Campaign Monitor competes with other email-marketing and campaign platforms. The table below clarifies where it fits.

Platform	Focus	Best for	Standout strength
Campaign Monitor	Design-led email marketing	Brands and agencies	Polished templates, agency/client tools
Mailchimp	General email + marketing	SMBs and mixed use cases	Ease of use, broad feature breadth
Constant Contact	Email for small business	Small businesses and non-profits	Simplicity, support, events
GetResponse	Email + automation + funnels	Marketers building funnels	All-in-one automation and landing pages
MailerLite	Simple, affordable email	Creators and small teams	Clean UX, low pricing

If a site turns out to use a different marketing tool, the same signals reveal it, a form action or tracking domain pointing at that vendor. For a small-business-oriented alternative, compare Campaign Monitor with Constant Contact, and our guide on identifying email platforms walks through the fingerprints for each.

Use Cases

Campaign Monitor is most at home with brand and marketing teams that want visually polished, on-brand email without a developer. A retailer or consumer brand uses it to design a responsive newsletter, segment subscribers by location or engagement, and schedule regular campaigns that stay consistent with the brand's look. The design focus makes it a natural fit wherever the appearance of the email is part of the message.

It also fits agencies managing email for multiple clients, using client accounts and white-label options to deliver campaigns under each brand's identity; non-profits and associations sending newsletters and appeals; and content and media teams running editorial newsletters that need to look as good as the publication itself. Because journeys automate welcome and nurture sequences, it suits teams that want set-and-forget onboarding email alongside their manual broadcasts.

Consider a few concrete scenarios. A consumer brand builds a brand template, designs a monthly newsletter, and segments it so subscribers in different regions see locally relevant content. A marketing agency runs a dozen client newsletters from one platform, switching between client accounts and applying each client's branding. A non-profit sets up a welcome journey that thanks new subscribers, introduces its mission over a short series, and then folds them into the regular newsletter cadence.

From a sales-intelligence perspective, detecting Campaign Monitor on a domain is a meaningful qualifier. It signals a brand or agency that invests in design-led email marketing, often a marketing-mature organization that values brand consistency. For vendors selling complementary services, design, deliverability, analytics, or list growth, that is a useful signal, and surfacing it automatically across many domains, rather than inspecting each site by hand, is exactly what technology detection is built to do. For more on turning these signals into qualified pipeline, see what is technographics: using tech-stack data to qualify leads and, for building outreach lists, how to build a b2b lead list from a website tech stack.

On compliance, Campaign Monitor provides the tools marketers need to meet anti-spam and privacy obligations, automatic unsubscribe links and preference management for laws like CAN-SPAM, and features that support consent-based list building and data handling under regimes such as the GDPR. As always, lawful sending depends on how the marketer collects consent and manages data, not on the platform alone.

Frequently Asked Questions

What is Campaign Monitor used for?

Campaign Monitor is used for email marketing, designing and sending campaigns, growing and managing subscriber lists, segmenting audiences, automating welcome and nurture sequences through journeys, and measuring engagement. It is known for its design-focused builder and professional templates, which make it especially popular with brands and agencies that want polished, on-brand email without writing HTML.

How can I tell for free if a site uses Campaign Monitor?

Yes, you can confirm it for free. View the page source and search for createsend, inspect a newsletter form to see whether its action posts to createsend.com, or open DevTools and check the Network tab for requests to Campaign Monitor domains such as js.createsend1.com. You can also inspect an email the brand sends for Campaign Monitor's link-tracking domains. Free tools like Wappalyzer and BuiltWith identify Campaign Monitor, and curl -s URL | grep -i createsend works from any terminal.

Is Campaign Monitor good for agencies?

Yes. Campaign Monitor has long emphasized agency use, offering client accounts that let an agency manage email for multiple brands from one place, plus white-label options so campaigns and interfaces can carry the client's branding. Combined with its design tooling, this makes it a common choice for agencies that deliver email marketing as a service to several clients.

What domain do Campaign Monitor forms use?

Campaign Monitor's hosted signup forms typically submit to its core createsend.com domain, and form scripts often load from a createsend1.com asset host. Seeing a <form> whose action points at createsend.com, or a script reference to a createsend domain, is a reliable way to confirm a site uses Campaign Monitor for its email signups.

Does Campaign Monitor support marketing automation?

Yes. Through its journeys feature, Campaign Monitor offers visual marketing automation, flows built from triggers, conditions, delays, and email actions, with branching based on subscriber behavior and field changes. This supports welcome series, lead nurture, and re-engagement campaigns that run automatically, alongside traditional one-off and scheduled broadcasts.

Want to detect Campaign Monitor and the rest of a site's technology stack instantly? Run any URL through StackOptic at https://stackoptic.com.