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Email Marketing Comparison

Campaign Monitor vs. Resend

At a glance

At a glance

Campaign Monitor

Best for

Best for marketing teams and agencies that want a polished drag-and-drop builder, prebuilt journeys and a large integration catalogue.

  • Freelancers
  • Small and mid-sized
  • Enterprise

Resend

Best for

Best for product and engineering teams that want transactional email, broadcasts and templates in the same codebase as the application that sends them.

  • Freelancers
  • Small and mid-sized
  • Enterprise

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion Campaign Monitor Resend
Starting price Not stated Free tier; Pro from $20 / month Transactional and marketing volume are billed separately. The transactional ladder runs Free, Pro from $20 per month and Scale from $90 per month, priced in bands by monthly email volume; marketing runs Free, Pro Marketing from $40 per month and Enterprise, priced by contact count.
Free trial Free plan for up to 500 contacts on a 30-day trial, with a 500 email send limit Free tier: 3,000 emails per month, 100 per day, 3 domains, plus 1,000 marketing contacts
API Yes, API access with 250+ integrations Yes, REST API with official SDKs for Node.js, Python, PHP, Ruby, Go, Rust, Elixir, Java and .NET, plus a CLI, webhooks and an official MCP server
Hosting Cloud (SaaS) Cloud (SaaS)
Campaign types Yes, email campaigns and newsletters, with a website builder available as a paid add-on Transactional email over the API, broadcasts to contacts and segments, and inbound email by pointing MX records at Resend
Automation and journeys Yes, prebuilt customer journeys and drip campaigns, with unlimited automated emails on Essentials and above Yes, flows triggered by custom events from your own application, built from condition, delay, wait for event, send email, contact update, contact delete and add to segment steps, with a Runs view for debugging
Segmentation and personalisation Yes, segmentation, with advanced engagement segments on the Premier plan Yes, contacts with custom properties grouped into segments, plus Topics so recipients can opt in or out of individual categories
Templates and editor Yes, a drag-and-drop builder with 100+ responsive templates and support for custom-coded templates React Email, a component-based template system written in code; there is no drag-and-drop builder
Deliverability and testing Yes, A/B testing, link review, and design and spam testing Domain verification with SPF, DKIM and DMARC, delivery event webhooks and event monitoring in the dashboard; dedicated IPs are a $30 per month add-on on Scale and above
Ecommerce and CRM data Yes, CRM and ecommerce connections among the 250+ integrations Contacts are created and updated over the API or bulk-imported by CSV up to 200 MB, with custom properties carrying the data used for personalisation
Integrations and API Yes, API access with 250+ integrations Yes, REST API with bearer key authentication, a batch endpoint for up to 100 messages per request, SDKs for nine languages, a CLI, webhooks and an official MCP server
AI features stated Yes No
MCP-ready No stated Yes
Deployment Cloud (SaaS), Browser-based Cloud (SaaS), Browser-based
Support more entries Email helpdesk, Phone Email helpdesk
Onboarding Not stated Documentation and knowledge base
Company size Freelancers, Small and mid-sized, Enterprise Freelancers, Small and mid-sized, Enterprise

Compare more tools

Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

  • Free trial Campaign Monitor Free plan for up to 500 contacts on a 30-day trial, with a 500 email send limit Resend Free tier: 3,000 emails per month, 100 per day, 3 domains, plus 1,000 marketing contacts
  • Support Campaign Monitor Email helpdesk, Phone Resend Email helpdesk
  • AI features Campaign Monitor Yes Resend No
  • MCP-ready Campaign Monitor No Resend Yes
  • API Campaign Monitor Yes, API access with 250+ integrations Resend Yes, REST API with official SDKs for Node.js, Python, PHP, Ruby, Go, Rust, Elixir, Java and .NET, plus a CLI, webhooks and an official MCP server

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

Campaign Monitor

Strengths

  • Drag-and-drop builder with 100+ responsive templates and custom-coded templates
  • Prebuilt customer journeys and drip campaigns
  • AI Writer, AI Email Booster and AI Segment Mapper
  • 250+ integrations, including CRM and ecommerce, with an API

Limitations

  • Advanced engagement segments are reserved for the Premier plan
  • The website builder is a paid add-on

Resend

Strengths

  • Transactional sending, broadcasts, contacts and automations on one API and one account
  • Official SDKs for Node.js, Python, PHP, Ruby, Go, Rust, Elixir, Java and .NET, plus a CLI
  • Standing free tiers on both ladders rather than a time-limited trial
  • Inbound email by pointing MX records at Resend, delivered as webhooks
  • Official MCP server, so the platform can be driven by AI agents

Limitations

  • Templates are React components, so building an email needs a developer
  • Two separate price ladders, one for sending volume and one for contacts
  • Dedicated IPs, extra domains and SSO are priced as add-ons on top of the plan
  • SSO and dedicated IPs require the Scale plan or above
  • The free tier caps sending at 100 emails per day

Plans

Pricing

Campaign Monitor

  • Free $0 / month Up to 500 contacts on a 30-day trial, with a 500 email send limit; no credit card required.
  • Lite Not stated Core email tools with up to 2,500 monthly sends.
  • Essentials Not stated Unlimited monthly sends and priority support.
  • Premier Not stated Unlimited monthly sends, advanced engagement segments and phone support.
  • Enterprise Not stated Custom pricing on annual contracts with a dedicated account manager.
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Resend

  • Free $0 3,000 emails per month, capped at 100 per day, 3 domains, 10,000 automation runs and 30-day data retention. Marketing side is free up to 1,000 contacts.
  • Pro $20 Per month, 50,000 emails and 10 domains, no daily limit, 5 webhook endpoints. $35 per month for 100,000 emails. Overage $0.90 per 1,000 emails.
  • Scale $90 Per month, from 100,000 emails and 1,000 domains, 10 webhook endpoints and a dedicated Slack channel. Rises through $160, $350, $650, $825 and $1,150 per month up to 2.5 million emails, with the overage rate falling from $0.90 to $0.46 per 1,000.
  • Pro Marketing $40 Per month for 5,000 contacts, rising to $650 per month for 150,000 contacts.
  • Enterprise Not stated Custom volume and contact limits, a 99.99% uptime SLA, a dedicated customer success manager, migration support and flexible AI credits.
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What users say

Review Scores · opens after launch

Campaign Monitor

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Resend

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Where this comes from

Where this comes from

Campaign Monitor https://www.campaignmonitor.com · checked against the official source on 2026-08-21

Resend https://resend.com · checked against the official source on 2026-09-07

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.