Email APIs · side by side
Mailjet vs Mails.ai
Compare Mailjet, Mails.ai by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
These providers bill in different units. Each estimate uses its own workload; there is no same-volume price winner.
Mailjet
0
Mails.ai
0
Mailjet
$0 / mo
Free · 0 emails
Mails.ai
$0 / mo
Free · 0 sends
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 | Mailjet | Mails.ai |
|---|---|---|
| Provider | Sinch | Mails.ai |
| Billing unit | emails | sends |
| Plan at selected usage | Free | Free |
| Monthly estimate | $0/mo | $0/mo |
| Workload | 0 emails | 0 sends |
| 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 | 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required |
| Published plans | Free, Starter, Essential, Premium, Custom | Free, Pro, Scale |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Mailjet
- Sinch
- Mails.ai
- Mails.ai
Billing unit
- Mailjet
- emails
- Mails.ai
- sends
Plan at selected usage
- Mailjet
- Free
- Mails.ai
- Free
Monthly estimate
- Mailjet
- $0/mo
- Mails.ai
- $0/mo
Workload
- Mailjet
- 0 emails
- Mails.ai
- 0 sends
Free access
- 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
- Mails.ai
- 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required
Published plans
- Mailjet
- Free, Starter, Essential, Premium, Custom
- Mails.ai
- Free, Pro, Scale
Prices checked
- Mailjet
- 2026-10-08
- Mails.ai
- 2026-10-08
Email APIs monthly cost
Mailjet: $0Mails.ai: $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 | Mailjet | Mails.ai |
|---|---|---|
| Dedicated IP | 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 | Not listed | |
| Automations | Not listed | |
| Custom Unsubscribe Page | Not listed | |
| Preference Center | 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 | Not listed | |
| 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 | First Month Only | Not listed |
| 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
- Mailjet
- Mails.ai
- Not listed
Advanced Email Editor
- Mailjet
- Mails.ai
- Not listed
Email Templates
- Mailjet
- Mails.ai
- Not listed
Unlimited Contacts
- Mailjet
- Mails.ai
- Not listed
GDPR-Compliant Subscription Forms
- Mailjet
- Mails.ai
- Not listed
Integrations
- Mailjet
- Mails.ai
- Not listed
MJML
- Mailjet
- Mails.ai
- Not listed
No Mailjet Logo
- Mailjet
- Mails.ai
- Not listed
Saved, Locked and Linked Sections
- Mailjet
- Mails.ai
- Not listed
Landing Pages
- Mailjet
- Mails.ai
- Not listed
AI Assisted content creation
- Mailjet
- Mails.ai
- Not listed
Personalization
- Mailjet
- Mails.ai
- Not listed
Templating Language
- Mailjet
- Mails.ai
- Not listed
Segmentation
- Mailjet
- Mails.ai
- Not listed
Brand Kit
- Mailjet
- Mails.ai
- Not listed
Dynamic Content
- Mailjet
- Mails.ai
- Not listed
Automations
- Mailjet
- Mails.ai
- Not listed
Custom Unsubscribe Page
- Mailjet
- Mails.ai
- Not listed
Preference Center
- Mailjet
- Mails.ai
- Not listed
Email Tracking Consent
- Mailjet
- Mails.ai
- Not listed
Anonymous Tracking
- Mailjet
- Mails.ai
- Not listed
Basic Statistics
- Mailjet
- Mails.ai
- Not listed
Webhooks (event API)
- Mailjet
- Mails.ai
- Not listed
Advanced Statistics
- Mailjet
- Mails.ai
- Not listed
Validations
- Mailjet
- Mails.ai
- Not listed
Campaign Comparison
- Mailjet
- Mails.ai
- Not listed
A/B Testing
- Mailjet
- Mails.ai
- Not listed
Email Previews
- Mailjet
- Mails.ai
- Not listed
Monthly Deliverability Reports and Recommendations
- Mailjet
- Mails.ai
- Not listed
Send API
- Mailjet
- Mails.ai
- Not listed
SMTP Relay
- Mailjet
- Mails.ai
- Not listed
Multi-user Access
- Mailjet
- Mails.ai
- Not listed
Multi-user Collaboration
- Mailjet
- Mails.ai
- Not listed
Advanced permissions
- Mailjet
- Mails.ai
- Not listed
Predefined roles
- Mailjet
- Mails.ai
- Not listed
Activity Logs
- Mailjet
- Mails.ai
- Not listed
Subaccounts
- Mailjet
- Mails.ai
- Not listed
Online Customer Support
- Mailjet
- First Month Only
- Mails.ai
- Not listed
Priority Support
- Mailjet
- Mails.ai
- Not listed
Phone and Chat Support
- Mailjet
- Mails.ai
- Not listed
Dedicated Technical Account Manager
- Mailjet
- Mails.ai
- Not listed
Deliverability Services
- Mailjet
- Mails.ai
- Not listed
Comprehensive onboarding
- Mailjet
- Mails.ai
- Not listed
API Expert
- Mailjet
- Mails.ai
- Not listed
Custom deliverability strategy
- Mailjet
- Mails.ai
- Not listed
Reputation monitoring
- Mailjet
- Mails.ai
- Not listed
Service Level Agreement
- Mailjet
- Mails.ai
- Not listed
Deliverability and platform training for your team
- Mailjet
- Mails.ai
- Not listed
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Which email providers fit your needs?
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
Mails.ai features & plan notes
- Inbound email parsing delivered as structured JSON with automatic prompt-injection detection
- Automatic email thread reconstruction and conversation handling via REST, SSE, or webhooks
- Native Model Context Protocol (MCP) server support alongside TypeScript and Python SDKs
- Per-agent reputation monitoring and send limits with cold outreach enforcement
- 3,000 events / month
- 1 agent
- TypeScript + Python SDKs, REST
- MCP server
- Magic-link signup, no card
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 pricingMailjet vs Mails.ai — FAQ
Mailjet: $0/month on Free at 0 emails. Mails.ai: $0/month on Free at 0 sends. 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.
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.
Inbound email parsing delivered as structured JSON with automatic prompt-injection detection, Automatic email thread reconstruction and conversation handling via REST, SSE, or webhooks, Native Model Context Protocol (MCP) server support alongside TypeScript and Python SDKs, Per-agent reputation monitoring and send limits with cold outreach enforcement. Free access: 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required. Check plan-specific availability and current terms on the provider's official pricing page.