Email APIs · side by side
Campaign Monitor vs Mailjet
Compare Campaign Monitor, Mailjet by sending volume, delivery webhooks, inbound email, domain limits and retention.
Verdict
Campaign Monitor vs MailjetCheaper now
Tie / not comparable
Different billing units
Cheaper at 10× scale
Tie / not comparable
Different billing units
Free tier
Both
All offer a free tier
Choose Campaign Monitor if…
- you value drag-and-drop email builder with custom HTML template import
- you value visual customer journey automation and drip campaigns
- you value built-in transactional email sending with REST API integration
Choose Mailjet if…
- you value send transactional and marketing emails via Send API v3.1 or SMTP relay
- you value real-time event webhooks for opens, clicks, bounces, spam complaints, and blocks
- you value responsive email builder with support for MJML open-source markup
Email APIs pricing calculator
These providers bill in different units. Each estimate uses its own workload; there is no same-volume price winner.
Campaign Monitor
0
Mailjet
0
Campaign Monitor
$0 / mo
Free · 0 contacts
Mailjet
$0 / mo
Free · 0 emails
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Email APIs overview & pricing
| Email APIs | Campaign Monitor | Mailjet |
|---|---|---|
| Provider | Marigold | Sinch |
| Billing unit | contacts | emails |
| Plan at selected usage | Free | Free |
| Monthly estimate | $0/mo | $0/mo |
| Workload | 0 contacts | 0 emails |
| Free access | 30-day free trial for up to 500 contacts and 500 email sends | Free plan includes 6,000 emails per month capped at 200 emails per day, with up to 1,000 contacts, API/SMTP relay access |
| Published plans | Free, Lite, Essentials, Premier, Enterprise | Free, Starter, Essential, Premium, Custom |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Campaign Monitor
- Marigold
- Mailjet
- Sinch
Billing unit
- Campaign Monitor
- contacts
- Mailjet
- emails
Plan at selected usage
- Campaign Monitor
- Free
- Mailjet
- Free
Monthly estimate
- Campaign Monitor
- $0/mo
- Mailjet
- $0/mo
Workload
- Campaign Monitor
- 0 contacts
- Mailjet
- 0 emails
Free access
- Campaign Monitor
- 30-day free trial for up to 500 contacts and 500 email sends
- Mailjet
- Free plan includes 6,000 emails per month capped at 200 emails per day, with up to 1,000 contacts, API/SMTP relay access
Published plans
- Campaign Monitor
- Free, Lite, Essentials, Premier, Enterprise
- Mailjet
- Free, Starter, Essential, Premium, Custom
Prices checked
- Campaign Monitor
- 2026-10-08
- Mailjet
- 2026-10-08
Email APIs monthly cost
Campaign Monitor: $0Mailjet: $0
Different workloads, separate estimates
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Email APIs feature comparison
| Email APIs | Campaign Monitor | Mailjet |
|---|---|---|
| Dedicated IP | Not listed | |
| Multiple users | Unlimited | Not listed |
| User roles & permissions | Not listed | |
| Two-factor authentication | Not listed | |
| Marketing Monitor | Not listed | |
| Drip Campaigns | Not listed | |
| Campaign Score | Not listed | |
| Contacts | 500 contacts for the 30-day free trial | Not listed |
| Monthly send volume | 500 email limit for the 30-day free trial | Not listed |
| Drag-and-drop builder | Not listed | |
| Customizable template library | Not listed | |
| Custom coded templates | Not listed | |
| Branded templates | Not listed | |
| Segmentation tools | Not listed | |
| Free image gallery | Not listed | |
| Signup forms | Limited | Not listed |
| Mobile optimization tools | Not listed | |
| A/B testing | ||
| Preference Center | ||
| Real-time reporting analytics | Limited | Not listed |
| Worldview reporting | Limited | Not listed |
| Email Workspace | Limited trial access | Not listed |
| Creative Lab | Limited trial access | Not listed |
| Brand Hub | Not listed | |
| Translation | Not listed | |
| Social Suite | Limited trial access | Not listed |
| Campaign Series | Not listed | |
| AI Email Booster | Not listed | |
| AI Segment Mapper | Not listed | |
| AI Writer | Not listed | |
| Automated emails | Not listed | |
| Prebuilt journeys | Not listed | |
| Non-human click filter | Not listed | |
| Subject line recommendations | Not listed | |
| Engagement segments | Not listed | |
| RSS feed trigger | Not listed | |
| Transactional emails | Not listed | |
| Campaign tags | Not listed | |
| Dynamic content | Limited | |
| Custom fields | Not listed | |
| Countdown timer | Not listed | |
| Time zone sending | Not listed | |
| Send time optimization | Not listed | |
| Email section locking | Not listed | |
| Advanced link tracking | Not listed | |
| Link review | Not listed | |
| Design & spam testing | Not listed | |
| AI Support Agent | Not listed | |
| Email support | Not listed | |
| Phone support | Not listed | |
| Deliverability support | Not listed | |
| Help Center | Not listed | |
| Training videos | Not listed | |
| Campaign Monitor 101 | Not listed | |
| Website Builder | Not listed | |
| API access | Not listed | |
| Advanced Email Editor | Not listed | |
| Email Templates | Not listed | |
| Unlimited Contacts | Not listed | |
| GDPR-Compliant Subscription Forms | Not listed | |
| Integrations | Not listed | |
| MJML | Not listed | |
| No Mailjet Logo | Not listed | |
| Saved, Locked and Linked Sections | Not listed | |
| Landing Pages | Not listed | |
| AI Assisted content creation | Not listed | |
| Personalization | Not listed | |
| Templating Language | Not listed | |
| Segmentation | Not listed | |
| Brand Kit | Not listed | |
| Dynamic Content | Limited | |
| Automations | Not listed | |
| Custom Unsubscribe Page | Not listed | |
| Email Tracking Consent | Not listed | |
| Anonymous Tracking | Not listed | |
| Basic Statistics | Not listed | |
| Webhooks (event API) | Not listed | |
| Advanced Statistics | Not listed | |
| Validations | Not listed | |
| Campaign Comparison | Not listed | |
| A/B Testing | ||
| Email Previews | Not listed | |
| Monthly Deliverability Reports and Recommendations | Not listed | |
| Send API | Not listed | |
| SMTP Relay | Not listed | |
| Multi-user Access | Not listed | |
| Multi-user Collaboration | Not listed | |
| Advanced permissions | Not listed | |
| Predefined roles | Not listed | |
| Activity Logs | Not listed | |
| Subaccounts | Not listed | |
| Online Customer Support | Not listed | First Month Only |
| Priority Support | Not listed | |
| Phone and Chat Support | Not listed | |
| Dedicated Technical Account Manager | Not listed | |
| Deliverability Services | Not listed | |
| Comprehensive onboarding | Not listed | |
| API Expert | Not listed | |
| Custom deliverability strategy | Not listed | |
| Reputation monitoring | Not listed | |
| Service Level Agreement | Not listed | |
| Deliverability and platform training for your team | Not listed |
Dedicated IP
- Campaign Monitor
- Not listed
- Mailjet
Multiple users
- Campaign Monitor
- Unlimited
- Mailjet
- Not listed
User roles & permissions
- Campaign Monitor
- Mailjet
- Not listed
Two-factor authentication
- Campaign Monitor
- Mailjet
- Not listed
Marketing Monitor
- Campaign Monitor
- Mailjet
- Not listed
Drip Campaigns
- Campaign Monitor
- Mailjet
- Not listed
Campaign Score
- Campaign Monitor
- Mailjet
- Not listed
Contacts
- Campaign Monitor
- 500 contacts for the 30-day free trial
- Mailjet
- Not listed
Monthly send volume
- Campaign Monitor
- 500 email limit for the 30-day free trial
- Mailjet
- Not listed
Drag-and-drop builder
- Campaign Monitor
- Mailjet
- Not listed
Customizable template library
- Campaign Monitor
- Mailjet
- Not listed
Custom coded templates
- Campaign Monitor
- Mailjet
- Not listed
Branded templates
- Campaign Monitor
- Mailjet
- Not listed
Segmentation tools
- Campaign Monitor
- Mailjet
- Not listed
Free image gallery
- Campaign Monitor
- Mailjet
- Not listed
Signup forms
- Campaign Monitor
- Limited
- Mailjet
- Not listed
Mobile optimization tools
- Campaign Monitor
- Mailjet
- Not listed
A/B testing
- Campaign Monitor
- Mailjet
Preference Center
- Campaign Monitor
- Mailjet
Real-time reporting analytics
- Campaign Monitor
- Limited
- Mailjet
- Not listed
Worldview reporting
- Campaign Monitor
- Limited
- Mailjet
- Not listed
Email Workspace
- Campaign Monitor
- Limited trial access
- Mailjet
- Not listed
Creative Lab
- Campaign Monitor
- Limited trial access
- Mailjet
- Not listed
Brand Hub
- Campaign Monitor
- Mailjet
- Not listed
Translation
- Campaign Monitor
- Mailjet
- Not listed
Social Suite
- Campaign Monitor
- Limited trial access
- Mailjet
- Not listed
Campaign Series
- Campaign Monitor
- Mailjet
- Not listed
AI Email Booster
- Campaign Monitor
- Mailjet
- Not listed
AI Segment Mapper
- Campaign Monitor
- Mailjet
- Not listed
AI Writer
- Campaign Monitor
- Mailjet
- Not listed
Automated emails
- Campaign Monitor
- Mailjet
- Not listed
Prebuilt journeys
- Campaign Monitor
- Mailjet
- Not listed
Non-human click filter
- Campaign Monitor
- Mailjet
- Not listed
Subject line recommendations
- Campaign Monitor
- Mailjet
- Not listed
Engagement segments
- Campaign Monitor
- Mailjet
- Not listed
RSS feed trigger
- Campaign Monitor
- Mailjet
- Not listed
Transactional emails
- Campaign Monitor
- Mailjet
- Not listed
Campaign tags
- Campaign Monitor
- Mailjet
- Not listed
Dynamic content
- Campaign Monitor
- Limited
- Mailjet
Custom fields
- Campaign Monitor
- Mailjet
- Not listed
Countdown timer
- Campaign Monitor
- Mailjet
- Not listed
Time zone sending
- Campaign Monitor
- Mailjet
- Not listed
Send time optimization
- Campaign Monitor
- Mailjet
- Not listed
Email section locking
- Campaign Monitor
- Mailjet
- Not listed
Advanced link tracking
- Campaign Monitor
- Mailjet
- Not listed
Link review
- Campaign Monitor
- Mailjet
- Not listed
Design & spam testing
- Campaign Monitor
- Mailjet
- Not listed
AI Support Agent
- Campaign Monitor
- Mailjet
- Not listed
Email support
- Campaign Monitor
- Mailjet
- Not listed
Phone support
- Campaign Monitor
- Mailjet
- Not listed
Deliverability support
- Campaign Monitor
- Mailjet
- Not listed
Help Center
- Campaign Monitor
- Mailjet
- Not listed
Training videos
- Campaign Monitor
- Mailjet
- Not listed
Campaign Monitor 101
- Campaign Monitor
- Mailjet
- Not listed
Website Builder
- Campaign Monitor
- Mailjet
- Not listed
API access
- Campaign Monitor
- Mailjet
- Not listed
Advanced Email Editor
- Campaign Monitor
- Not listed
- Mailjet
Email Templates
- Campaign Monitor
- Not listed
- Mailjet
Unlimited Contacts
- Campaign Monitor
- Not listed
- Mailjet
GDPR-Compliant Subscription Forms
- Campaign Monitor
- Not listed
- Mailjet
Integrations
- Campaign Monitor
- Not listed
- Mailjet
MJML
- Campaign Monitor
- Not listed
- Mailjet
No Mailjet Logo
- Campaign Monitor
- Not listed
- Mailjet
Saved, Locked and Linked Sections
- Campaign Monitor
- Not listed
- Mailjet
Landing Pages
- Campaign Monitor
- Not listed
- Mailjet
AI Assisted content creation
- Campaign Monitor
- Not listed
- Mailjet
Personalization
- Campaign Monitor
- Not listed
- Mailjet
Templating Language
- Campaign Monitor
- Not listed
- Mailjet
Segmentation
- Campaign Monitor
- Not listed
- Mailjet
Brand Kit
- Campaign Monitor
- Not listed
- Mailjet
Dynamic Content
- Campaign Monitor
- Limited
- Mailjet
Automations
- Campaign Monitor
- Not listed
- Mailjet
Custom Unsubscribe Page
- Campaign Monitor
- Not listed
- Mailjet
Email Tracking Consent
- Campaign Monitor
- Not listed
- Mailjet
Anonymous Tracking
- Campaign Monitor
- Not listed
- Mailjet
Basic Statistics
- Campaign Monitor
- Not listed
- Mailjet
Webhooks (event API)
- Campaign Monitor
- Not listed
- Mailjet
Advanced Statistics
- Campaign Monitor
- Not listed
- Mailjet
Validations
- Campaign Monitor
- Not listed
- Mailjet
Campaign Comparison
- Campaign Monitor
- Not listed
- Mailjet
A/B Testing
- Campaign Monitor
- Mailjet
Email Previews
- Campaign Monitor
- Not listed
- Mailjet
Monthly Deliverability Reports and Recommendations
- Campaign Monitor
- Not listed
- Mailjet
Send API
- Campaign Monitor
- Not listed
- Mailjet
SMTP Relay
- Campaign Monitor
- Not listed
- Mailjet
Multi-user Access
- Campaign Monitor
- Not listed
- Mailjet
Multi-user Collaboration
- Campaign Monitor
- Not listed
- Mailjet
Advanced permissions
- Campaign Monitor
- Not listed
- Mailjet
Predefined roles
- Campaign Monitor
- Not listed
- Mailjet
Activity Logs
- Campaign Monitor
- Not listed
- Mailjet
Subaccounts
- Campaign Monitor
- Not listed
- Mailjet
Online Customer Support
- Campaign Monitor
- Not listed
- Mailjet
- First Month Only
Priority Support
- Campaign Monitor
- Not listed
- Mailjet
Phone and Chat Support
- Campaign Monitor
- Not listed
- Mailjet
Dedicated Technical Account Manager
- Campaign Monitor
- Not listed
- Mailjet
Deliverability Services
- Campaign Monitor
- Not listed
- Mailjet
Comprehensive onboarding
- Campaign Monitor
- Not listed
- Mailjet
API Expert
- Campaign Monitor
- Not listed
- Mailjet
Custom deliverability strategy
- Campaign Monitor
- Not listed
- Mailjet
Reputation monitoring
- Campaign Monitor
- Not listed
- Mailjet
Service Level Agreement
- Campaign Monitor
- Not listed
- Mailjet
Deliverability and platform training for your team
- Campaign Monitor
- Not listed
- Mailjet
Showing 15 of 102
Which email providers fit your needs?
Campaign Monitor features & plan notes
- Drag-and-drop email builder with custom HTML template import
- Visual customer journey automation and drip campaigns
- Built-in transactional email sending with REST API integration
- A/B testing, inbox preview, and spam testing tools
- Send time optimization and engagement-based segmentation on higher tiers
- 500 contacts for the 30-day free trial
- 500 email limit for the 30-day free trial
- Multiple users (Unlimited)
- User roles & permissions
- Two-factor authentication
- Core email features
- Limited signup forms
- Limited real-time reporting analytics
- Limited Worldview reporting
- Limited trial access to Marketing Studio (Email Workspace, Creative Lab, Social Suite)
- Dynamic content (Limited)
Mailjet features & plan notes
- Send transactional and marketing emails via Send API v3.1 or SMTP relay
- Real-time event webhooks for opens, clicks, bounces, spam complaints, and blocks
- Responsive email builder with support for MJML open-source markup
- Contact list management, email address validations, and inbox preview testing
- 1,000 contacts
- APIs, SMTP Relay, Webhooks
- Advanced Email Editor
- Basic Statistics
- Form Builder
- Email Tracking Consent
How to compare email providers
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Browse Email APIs pricingCampaign Monitor vs Mailjet — FAQ
Campaign Monitor: $0/month on Free at 0 contacts. Mailjet: $0/month on Free at 0 emails. Different billing units are not an equal-workload comparison. Estimates exclude unlisted add-ons and taxes.
Review SMTP or API integration, domain authentication, bounce and complaint events, suppression handling and delivery-log retention.
Only when the published plan actually bills by sends. Contacts, subscribers and inboxes stay in their own billing units.
Drag-and-drop email builder with custom HTML template import, Visual customer journey automation and drip campaigns, Built-in transactional email sending with REST API integration, A/B testing, inbox preview, and spam testing tools, Send time optimization and engagement-based segmentation on higher tiers. Free access: 30-day free trial for up to 500 contacts and 500 email sends. Check plan-specific availability and current terms on the provider's official pricing page.
Send transactional and marketing emails via Send API v3.1 or SMTP relay, Real-time event webhooks for opens, clicks, bounces, spam complaints, and blocks, Responsive email builder with support for MJML open-source markup, Contact list management, email address validations, and inbox preview testing. Free access: Free plan includes 6,000 emails per month capped at 200 emails per day, with up to 1,000 contacts, API/SMTP relay access. Check plan-specific availability and current terms on the provider's official pricing page.