vioscaleAI
Comparison

Courier vs MailerSend

No clear leader: Courier (67.1) and MailerSend (67.0) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Courier full profile →MailerSend full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Courier67
MailerSend67
Score
vioscaleAI score
Courier67 / 100medium · 70%
MailerSend67 / 100medium · 63%
Pricing
Free tier
Courier✓
MailerSend✓
Model
Courierfreemium
MailerSendcommercial
Price level
Courierlow
MailerSendunknown
Starting price
Courier–
MailerSend$7
Transparent
Courier✓
MailerSend✓
Integrations
Count
Courier27
MailerSend33
Security
Certifications
Courier–
MailerSendISO 27001
Disclosure policy
Courier✓
MailerSend–
Gdpr
Courier✓
MailerSend✓
Hipaa
Courier✓
MailerSend–
Iso27001
Courier–
MailerSend✓
Pci
Courier✓
MailerSend✓
Soc2
Courier✓
MailerSend–
Reliability
Sla pct
Courier–
MailerSend99.5
Status page
Courier✓
MailerSend✓
Market
Availability
Content
Faq
Courier6 items
MailerSend7 items

Capabilities

Feature-by-feature on the axes that matter for communication apis. “-” means undocumented, not absent.

Channels
SMS
Courier✓
MailerSend✓
Voice
Courier✗
MailerSend-
WhatsApp
Courier✓
MailerSend✓
RCS
Courier✗
MailerSend-
Transactional email
Courier✓
MailerSend✓
Video / real-time
Courier✗
MailerSend-
In-app chat
Courier✓
MailerSend-
Verify / OTP / 2FA
Courier✗
MailerSend✓
Messaging
Two-way messaging
Courier✗
MailerSend✓
Reach
Geographic coverage
CourierGlobal
MailerSendRegional
Delivery
Email deliverability tools
Courier✓
MailerSend✓
Commercial
Published per-unit pricing
Courier✗
MailerSend✓

What each one is

The product in its own terms, so the numbers below have context.

Courier

A notification platform that consolidates email, SMS, push, and chat delivery across multiple third-party providers, offering centralized routing, templating, automatic failover, and in-app notifications through one API.

Independently observed

MailerSend

A cloud messaging platform that enables developers to send transactional emails and text messages through an API, with built-in tools for managing delivery and tracking engagement

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Courier

from $0.01/moUsage-basedFree tier

Free tier with 10,000 sends/month, then $0.005 per send. No per-seat or channel fees.

  • DeveloperFree
    • 10,000 sends per month
    • Journeys & broadcasts
    • MCP server, CLI, & SDKs
    • SSO via Google, Github
    • Email support
  • Business$0.005 per send
    • All Developer features
    • Pay-as-you-go pricing
    • AI Translations
    • AI Agent node
    • Email & chat support
  • EnterpriseContact sales
    • All Business features
    • Volume pricing
    • Dedicated Slack channel
    • Observability integrations
    • Role-based access control
    • +2 more
as of verify ↗

MailerSend

from $7/moSubscriptionFree tier14-day trial

From $7/month. Free tier with 500 emails/month. 14-day free Professional trial.

  • FreeFree
    • Email API and SMTP relay
    • Email threading support
    • Drag-and-drop email builder
    • 1,000 API requests per day
    • 1 domain
    • +1 more
  • Hobby$7/month
    • Everything in Free, plus
    • User roles and permissions
    • 24-hour data retention
    • 10 templates
    • 1-day activity log retention
    • +1 more
  • Starter-
    • Everything in Hobby, plus
    • 50 sender identities
    • Inbound routing
    • SMS API (US and Canada)
    • 5 users
    • +3 more
  • Professional$25/month + $0.90 per 1,000 additional emails
    • Everything in Starter, plus
    • 1,000 domains
    • Unlimited templates
    • High-throughput API
    • Unlimited users
    • +2 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Courier✓
MailerSend✓
iOS
Courier✓
MailerSend✗
Android
Courier✓
MailerSend✗
CLI
Courier✓
MailerSend✓
Deployment
Cloud / SaaS
Courier✓
MailerSend✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (3)
  • Firebase
  • Slack
  • Courier

Courier

27 total - 24 not shared
  • Amply
  • AWS SES
  • Postmark
  • Mailgun
  • Gmail
  • MailerSend
  • Mailchimp
  • SendGrid
  • SMTP
  • AWS SNS
  • Azure SMS
  • MessageMedia
  • SMSCentral
  • Twilio
  • Vonage
  • Apple Push Notifications
  • Google FCM
  • Microsoft Teams
  • StreamChat
  • WhatsApp
  • Segment
  • Datadog
  • Okta
  • Webhook
Independently observed

MailerSend

33 total - 30 not shared
  • Zapier
  • Supabase
  • Symfony
  • Laravel
  • Airbyte
  • Airtable
  • Anymail
  • ChatGPT
  • Claude
  • Cursor
  • Django
  • Google Cloud
  • Integrately
  • Knock
  • Magento
  • Mailster
  • Make
  • NocoDB
  • Novu
  • Pabbly Connect
  • Partnero
  • Pipedream
  • Rails
  • React Email
  • +6 more
Independently observed
Still deciding?

Courier or MailerSend: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.