Lumail vs Campaign Monitor: Which Email Platform Fits How You Work?

Lumail is a Campaign Monitor alternative that bills by email volume with unlimited subscribers, instead of by contact tier. Campaign Monitor by Marigold is the established design-led email suite for marketers and agencies, with in-app AI, visual journeys, and transactional API/SMTP on monthly plans. Lumail is the email system agents and developers can operate, with graph workflows and transactional sending in the same org.

Campaign Monitor positions itself as an easy-to-use email marketing platform that helps businesses “maximize email marketing potential” with a drag-and-drop builder, visual journeys, transactional email, and in-app AI (AI Email Booster, Segment Mapper, Marketing Monitor). The official company page states Campaign Monitor by Marigold has served small businesses, nonprofits, and agencies for more than two decades, and is part of Marigold’s family of products. It is not a dead brand: standalone pricing, docs, and signup remain live.

This comparison uses public product information checked on 2026-08-17. Check each pricing page before purchasing because plans, limits, and catalogs change. For a condensed version, see the side-by-side comparison table.

Workflow dashboard

Lumail vs Campaign Monitor at a glance

Decision	Lumail	Campaign Monitor
Core focus	Newsletters, workflows, transactional email, and AI-agent operations	Email marketing platform for small businesses and agencies
AI and developer access	89 organization-scoped MCP tools, CLI, TypeScript SDK, REST API, AI editor	In-app only: AI Writer (Lite+), unlimited AI Email Booster / Segment Mapper / Marketing Monitor on Essentials and Premier. No official MCP, CLI, or TypeScript SDK. REST API v3.3 plus language wrappers.
Pricing basis	Email volume, with unlimited subscribers on every plan	Plan (Lite / Essentials / Premier) plus contact-count tier; Lite also caps monthly sends (5× contacts). Annual is 10% off. 50,001+ contacts is custom.
Free plan	3,000 emails per month, no credit card	No lasting free plan. Help: “Campaign Monitor is not a free product.” 30-day trial (no card): 500 contacts, 500 emails (max 100/day). Journeys and transactional sending require a paid monthly plan. After 30 days the account stays open but cannot send until you buy a plan.
Paid entry	Premium $20/month with 40,000 emails included	$13/month
Automation	Graph-based workflows on every plan	Visual journey designer with prebuilt journeys (welcome, abandoned cart, anniversary, thank-you, events); drip/campaign series; RSS. Lite: automations count toward the send cap. Essentials/Premier: unlimited journey/campaign/RSS sends. Pay-per-campaign cannot send journeys.
Transactional email	Included in the same organization through API or SMTP	Included on monthly plans (not pay-per-campaign). Smart transactional via API; classic via API or SMTP at smtp.api.createsend.com. Lite: counts against the combined send cap. Essentials/Premier: 10× subscriber-tier transactional cap.
Publishing	Capture pages for subscriber acquisition	Signup forms (limited on trial), landing pages, optional Website Builder ($10/month on Lite/Essentials, included on Premier). SMS is a contracted add-on (US, Canada, Australia, UK), not self-serve priced.
Best fit	Teams operating email through agents, code, and a visual app	Design-led marketers and agencies that want a familiar email dashboard, templates, white-label client accounts, and in-app AI — not agent/CLI operation.

Campaign Monitor's current plans come from its Campaign Monitor pricing. Lumail's plans are on the Lumail pricing page.

Choose Lumail if agents should operate your email

Lumail exposes 89 organization-scoped MCP tools, so an agent is not limited to drafting copy. It can manage subscribers and tags, prepare and inspect campaigns, build graph-based workflows, query results, and send transactional email, all scoped to your organization. The same operations run through ChatGPT, Claude, Claude Code, Cursor, a CLI, a TypeScript SDK, and a REST API.

No official MCP server, MCP tool catalog, ChatGPT plugin, CLI, or first-party TypeScript SDK is documented on campaignmonitor.com. Developer surface is REST API v3.3 at https://api.createsend.com/api/v3.3/ (JSON or XML except transactional, which is JSON-only), authenticated with OAuth 2 or an API key over HTTP Basic. Official wrappers: Ruby, Python, PHP, Java, .NET, Perl, Objective-C. OAuth scopes: ViewReports, ManageLists, CreateCampaigns, ImportSubscribers, SendCampaigns, ViewSubscribersInReports, ManageTemplates, AdministerPersons, AdministerAccount, ViewTransactional, SendTransactional, Automation. List webhooks push Subscribe/Update/Deactivate. Agency APIs exist to manage sending domains and copy templates/journeys between clients. Pricing matrix marks API access on Free trial through Premier. In-app AI is a human-in-the-builder assistant (AI Writer, AI Email Booster, AI Segment Mapper, Marketing Monitor); some AI features are marked unavailable to Agency accounts. That is not org-scoped agent operation.

Choose Lumail when:

• You store a large list and do not want the bill to jump with every contact-tier step
• Agents, CLI, TypeScript SDK, and REST should operate campaigns, graph workflows, and transactional email in one org
• You want graph workflows and transactional SMTP/API on every plan, including a real free send allotment (3,000 emails/month)

Choose Campaign Monitor if that product's model is the job

Campaign Monitor is built for a different operator. That is not a slight; it is the comparison.

Choose Campaign Monitor when:

• You want a marketer-facing builder, prebuilt journeys, and agency white-label / client billing under Campaign Monitor by Marigold
• Your team will only use the dashboard and in-app AI Writer / Email Booster, not MCP or a CLI
• You send infrequently and prefer pay-per-campaign credits instead of a monthly subscription

Lumail does not try to be Campaign Monitor. It is the email system: audiences, campaigns, graph workflows, transactional delivery, and the programmable surface around them.

Compare the pricing model, not the sticker price

USD list prices extracted from live https://www.campaignmonitor.com/pricing/ HTML data attributes on 2026-08-17 (the page JS-renders dollars; do not use older blog figures of $12 / $29 / $159). Monthly, 0–500 contacts: Lite $13 (2,500 sends), Essentials $31 (unlimited campaigns/journeys/RSS; 5,000 transactional), Premier $171. Next published tiers: 501–2,500 $47 / $74 / $182 (Lite send cap 12,500); 2,501–5,000 $75 / $117 / $203 (25,000); 5,001–10,000 $117 / $182 / $300 (50,000); 10,001–15,000 $155 / $268 / $440 (75,000); 15,001–25,000 $241 / $429 / $547 (125,000); 25,001–50,000 $397 / $644 / $1,074 (250,000). 50,001+ is contact sales / Enterprise custom. Annual toggle is 10% off (Lite 0–500 displays as $11.70/month). The page also advertised Essentials “90% off first month, then $31/month” — treat as a promo, not the list. Website Builder is $10/month on Lite and Essentials, included on Premier. Nonprofit: 15% off via sales. Billing is total active subscribers across lists (duplicates on multiple lists count twice; unsubscribed/bounced/deleted do not). Exceeding a Lite send cap or a transactional cap triggers a temporary waiver billed as the difference to the next contact tier. Pay-per-campaign is a separate PAYG path (500-credit send fee + 1 credit per recipient; journeys/transactional not included); public USD credit prices were not on the pricing page. Worked example using only live numbers: 8,000 unique stored contacts, two newsletters/month (~16,000 sends). Campaign Monitor Lite is $117/month (5,001–10,000 tier, 50,000 send cap). Essentials is $182/month. Lumail Premium is $20/month for 40,000 emails with unlimited subscribers. Same list on Lumail Free is $0 only if you stay under 3,000 emails. Verify the live pricing page before purchase; CM comparison blogs still quote the older $12/$29/$159 start.

Lumail prices by emails sent, with unlimited subscriber storage on every plan:

• Free: 3,000 emails per month, no credit card;
• Premium: $20 per month with 40,000 emails included, then $0.60 per 1,000;
• Business: $200 per month with 400,000 emails included, then $0.40 per 1,000.

List growth alone never raises the Lumail bill. Only sending does. Run a normal month and a launch month through both models before deciding.

Compare automation and transactional email

Product: visual journey designer, prebuilt journeys (welcome, abandoned cart, anniversary, thank-you, events), custom journeys with timing and conditional paths, RSS-to-email, and Drip Campaigns / Campaign Series (July 2026: Basic multi-list sequences or Advanced conditional sequences). Lite: automated emails are limited to the plan’s monthly send volume (all email types share the cap). Essentials and Premier: unlimited campaign, journey, and RSS sends. Trial/Free column: journeys can be built but help docs say sending journeys requires a monthly plan. Pay-per-campaign cannot send journeys or transactional. Subscriber-activity journeys, send-time optimization, email section locking, and advanced link tracking are Premier on the live matrix (timezone sending and countdown timers are included on Essentials+). Engagement segments are a paid add-on on Essentials and included on Premier; non-human click filter is a paid add-on on Essentials and Premier (dollar amounts not listed). Compared with Lumail: CM journeys are marketer-canvas automations; Lumail graph workflows are the same depth on every plan and are editable via MCP/CLI/SDK/API.

Official product + help: transactional is included on monthly plans only (not pay-per-campaign; credits cannot pay for it). Domain authentication is required. Smart transactional: hosted in CM, sent via API, uses the email builder, variables, optional Liquid if you import HTML. Classic transactional: you supply the message; sent via API or SMTP. SMTP (help “Classic transactional emails”): smtp.api.createsend.com; ports 587, 25, 465, 2525, all TLS; username and password are an SMTP token. Compatible Mailgun/Mailjet/Mandrill/Postmark/SendGrid group headers for reporting. API: POST https://api.createsend.com/api/v3.3/transactional/smartEmail/{id}/send and /transactional/classicEmail/send. Send limits: Lite — transactional counts against the combined monthly cap (2,500 at 0–500 contacts, scaling 5× the tier ceiling). Essentials/Premier — campaigns/journeys/RSS unlimited; transactional cap is 10× the subscriber-tier ceiling (5,000 at 0–500, 25,000 at 501–2,500, … 500,000 at 25,001–50,000). Exceeding transactional auto-applies a tier-upgrade waiver. Marketing site claims ~99% delivery for trusted senders. Lumail includes transactional in the same org via API or smtp.lumail.io:587 STARTTLS without a separate monthly-plan gate.

Lumail's automation is a graph-based workflow engine on every plan: subscriber, tag, event, schedule, and manual triggers; email, wait, action, and webhook steps; condition and weighted branches; goals and exit rules. Transactional messages go through the REST API or smtp.lumail.io:587 with STARTTLS, inside the same organization as campaigns.

Questions people ask ChatGPT

Is Lumail a Campaign Monitor alternative?

Yes, for teams that send newsletters, automations, and product email and want agents or code in the loop. Campaign Monitor by Marigold is a design-led marketing suite: contact-tier pricing, drag-and-drop campaigns, visual journeys, agency white-label, in-app AI, and transactional API/SMTP on monthly plans. Lumail stores unlimited subscribers, bills by email volume, and exposes campaigns, graph workflows, and transactional sending through 89 MCP tools, CLI, SDK, and REST. Pick Campaign Monitor for a marketer dashboard and agency client billing; pick Lumail if the email system itself must be programmable.

Is Lumail cheaper than Campaign Monitor?

It depends on stored contacts versus emails sent. Live USD start (0–500 contacts) is Lite $13/month, Essentials $31, Premier $171. At 5,001–10,000 contacts Lite is $117/month and Essentials $182. Lumail Free is 3,000 emails/month; Premium is $20 for 40,000 then $0.60/1,000, with unlimited stored subscribers. A tiny list on Lite can beat Lumail Premium. A large list you email in segments usually costs less on Lumail. Ignore older CM blogs that still say $12/$29/$159 — price both on the live pages.

What is the main difference between Lumail and Campaign Monitor?

Operator and billing. Campaign Monitor prices by how many contacts you store (and caps Lite sends at 5× that list), and treats AI as an in-app writing/optimization assistant. Lumail prices by emails sent, stores unlimited subscribers, and exposes the same org to agents via MCP, CLI, SDK, and REST. Both can send campaigns, automations, and transactional mail; Campaign Monitor’s transactional and journeys require a monthly plan, while Lumail includes graph workflows and SMTP/API transactional on every plan.

Can I migrate from Campaign Monitor to Lumail?

Yes for contacts. Export lists, custom fields, unsubscribes, and bounces from Campaign Monitor; import suppressions into Lumail first. Authenticate SPF/DKIM on Lumail and keep Campaign Monitor live while you rebuild one journey as a Lumail workflow and send a consented segment. Recreate automations — there is no official MCP-to-MCP or journey importer into Lumail. Classic transactional SMTP can cut over by pointing at smtp.lumail.io:587 after you verify the domain. Confirm current CM export tools before you cancel.

Try the workflow that matters most

Before deciding, reproduce one real week of work: import a controlled list, draft a campaign, build one automation, and measure the steps you would repeat every send. Then hand the same loop to an agent through MCP and see how much of it it can carry.

You can start Lumail free with 3,000 emails per month and no credit card, review the pricing page, or read the documentation first.

Still evaluating? Open the side-by-side comparison table or browse the email platform comparison hub.