Email APIs · side by side
Apollo.io vs Mailjet
Compare Apollo.io, Mailjet 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.
Apollo.io
0
Mailjet
0
Apollo.io
$0 / mo
Free · 0 user
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 | Apollo.io | Mailjet |
|---|---|---|
| Provider | Apollo.io, Inc. | Sinch |
| Billing unit | user | emails |
| Plan at selected usage | Free | Free |
| Monthly estimate | $0/mo | $0/mo |
| Workload | 0 user | 0 emails |
| Free access | Free plan includes up to 10,000 email credits per month, limited mobile and export credits, basic filters, and 2 active | 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, Basic, Professional, Custom | Free, Starter, Essential, Premium, Custom |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Apollo.io
- Apollo.io, Inc.
- Mailjet
- Sinch
Billing unit
- Apollo.io
- user
- Mailjet
- emails
Plan at selected usage
- Apollo.io
- Free
- Mailjet
- Free
Monthly estimate
- Apollo.io
- $0/mo
- Mailjet
- $0/mo
Workload
- Apollo.io
- 0 user
- Mailjet
- 0 emails
Free access
- Apollo.io
- Free plan includes up to 10,000 email credits per month, limited mobile and export credits, basic filters, and 2 active
- 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
- Apollo.io
- Free, Basic, Professional, Custom
- Mailjet
- Free, Starter, Essential, Premium, Custom
Prices checked
- Apollo.io
- 2026-10-08
- Mailjet
- 2026-10-08
Email APIs monthly cost
Apollo.io: $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 | Apollo.io | Mailjet |
|---|---|---|
| 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 | 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
- Apollo.io
- Not listed
- Mailjet
Advanced Email Editor
- Apollo.io
- Not listed
- Mailjet
Email Templates
- Apollo.io
- Not listed
- Mailjet
Unlimited Contacts
- Apollo.io
- Not listed
- Mailjet
GDPR-Compliant Subscription Forms
- Apollo.io
- Not listed
- Mailjet
Integrations
- Apollo.io
- Not listed
- Mailjet
MJML
- Apollo.io
- Not listed
- Mailjet
No Mailjet Logo
- Apollo.io
- Not listed
- Mailjet
Saved, Locked and Linked Sections
- Apollo.io
- Not listed
- Mailjet
Landing Pages
- Apollo.io
- Not listed
- Mailjet
AI Assisted content creation
- Apollo.io
- Not listed
- Mailjet
Personalization
- Apollo.io
- Not listed
- Mailjet
Templating Language
- Apollo.io
- Not listed
- Mailjet
Segmentation
- Apollo.io
- Not listed
- Mailjet
Brand Kit
- Apollo.io
- Not listed
- Mailjet
Dynamic Content
- Apollo.io
- Not listed
- Mailjet
Automations
- Apollo.io
- Not listed
- Mailjet
Custom Unsubscribe Page
- Apollo.io
- Not listed
- Mailjet
Preference Center
- Apollo.io
- Not listed
- Mailjet
Email Tracking Consent
- Apollo.io
- Not listed
- Mailjet
Anonymous Tracking
- Apollo.io
- Not listed
- Mailjet
Basic Statistics
- Apollo.io
- Not listed
- Mailjet
Webhooks (event API)
- Apollo.io
- Not listed
- Mailjet
Advanced Statistics
- Apollo.io
- Not listed
- Mailjet
Validations
- Apollo.io
- Not listed
- Mailjet
Campaign Comparison
- Apollo.io
- Not listed
- Mailjet
A/B Testing
- Apollo.io
- Not listed
- Mailjet
Email Previews
- Apollo.io
- Not listed
- Mailjet
Monthly Deliverability Reports and Recommendations
- Apollo.io
- Not listed
- Mailjet
Send API
- Apollo.io
- Not listed
- Mailjet
SMTP Relay
- Apollo.io
- Not listed
- Mailjet
Multi-user Access
- Apollo.io
- Not listed
- Mailjet
Multi-user Collaboration
- Apollo.io
- Not listed
- Mailjet
Advanced permissions
- Apollo.io
- Not listed
- Mailjet
Predefined roles
- Apollo.io
- Not listed
- Mailjet
Activity Logs
- Apollo.io
- Not listed
- Mailjet
Subaccounts
- Apollo.io
- Not listed
- Mailjet
Online Customer Support
- Apollo.io
- Not listed
- Mailjet
- First Month Only
Priority Support
- Apollo.io
- Not listed
- Mailjet
Phone and Chat Support
- Apollo.io
- Not listed
- Mailjet
Dedicated Technical Account Manager
- Apollo.io
- Not listed
- Mailjet
Deliverability Services
- Apollo.io
- Not listed
- Mailjet
Comprehensive onboarding
- Apollo.io
- Not listed
- Mailjet
API Expert
- Apollo.io
- Not listed
- Mailjet
Custom deliverability strategy
- Apollo.io
- Not listed
- Mailjet
Reputation monitoring
- Apollo.io
- Not listed
- Mailjet
Service Level Agreement
- Apollo.io
- Not listed
- Mailjet
Deliverability and platform training for your team
- Apollo.io
- Not listed
- Mailjet
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Which email providers fit your needs?
Apollo.io features & plan notes
- Database of over 275 million B2B contacts with verified email addresses
- Automated multi-step email sequences and engagement cadences
- Chrome extension for lead enrichment and prospecting directly from LinkedIn
- Native CRM integrations with platforms like Salesforce and HubSpot
- Connect Gmail accounts only
- Email campaigns included
- Unlimited email addresses for contacts (subject to Fair Use Policy)
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 pricingApollo.io vs Mailjet — FAQ
Apollo.io: $0/month on Free at 0 user. 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.
Database of over 275 million B2B contacts with verified email addresses, Automated multi-step email sequences and engagement cadences, Chrome extension for lead enrichment and prospecting directly from LinkedIn, Native CRM integrations with platforms like Salesforce and HubSpot. Free access: Free plan includes up to 10,000 email credits per month, limited mobile and export credits, basic filters, and 2 active . 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.