Email APIs · side by side
Kit vs Resend
Compare Kit, Resend 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.
Kit
Resend
Kit
Custom / not listed
Custom / unlisted usage pricing · 10K subscribers
Resend
$90 / mo
Scale · 100K 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 | Kit | Resend |
|---|---|---|
| Provider | Kit | Resend |
| Billing unit | subscribers | emails |
| Plan at selected usage | Custom / unlisted usage pricing | Scale |
| Monthly estimate | Custom / not listed | $90/mo |
| Workload | 10K subscribers | 100K emails |
| Free access | Creator free plan | 3,000 emails/mo |
| Published plans | Free, Creator, Pro | Free, Pro, Scale, Enterprise |
| Prices checked | 2026-10-08 | 2026-10-08 |
- Kit
- Kit
- Resend
- Resend
- Kit
- subscribers
- Resend
- emails
- Kit
- Custom / unlisted usage pricing
- Resend
- Scale
- Kit
- Custom / not listed
- Resend
- $90/mo
- Kit
- 10K subscribers
- Resend
- 100K emails
- Kit
- Creator free plan
- Resend
- 3,000 emails/mo
- Kit
- Free, Creator, Pro
- Resend
- Free, Pro, Scale, Enterprise
- Kit
- 2026-10-08
- Resend
- 2026-10-08
Email APIs monthly cost
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 | Kit | Resend |
|---|---|---|
| Single sign-on | Not listed | With add-on |
| Daily limit | Not listed | No limit |
| Inbound emails | Not listed | |
| RESTful API | Not listed | |
| SMTP relay | Not listed | |
| Official SDKs | Not listed | |
| Schedule emails | Not listed | |
| Batch sending | Not listed | |
| Open tracking | Not listed | |
| Link tracking | Not listed | |
| React Email | Not listed | |
| Custom domains | Not listed | 1,000 |
| Additional domains | Not listed | With add-on |
| Dedicated IPs | Not listed | With add-on |
| Dedicated IP warming | Not listed | |
| Pristine shared IPs | Not listed | |
| Automatic suppression list | Not listed | |
| Bounce details | Not listed | |
| Multi-region | Not listed | |
| Data retention | Not listed | 30 days |
| Deliverability insights | Not listed | |
| DKIM, SPF, DMARC authentication | Not listed | |
| Webhook endpoints | Not listed | 10 endpoints |
| Webhook events | Not listed | All events |
| Social login | Not listed | |
| GDPR compliance | Not listed | |
| SOC 2 Type II certification | Not listed | |
| Penetration testing | Not listed | |
| DDoS protection | Not listed | |
| Automated backups | Not listed | |
| Multi-factor authentication | Not listed | |
| API key permissions | Not listed | |
| Signed webhook endpoints | Not listed | |
| Ticket support | Not listed | |
| Slack support | Not listed | |
| Urgent response SLA | Not listed | |
| Deliverability expertise | Not listed | |
| In-app documentation | Not listed | |
| AI assistant | Not listed | |
| AI credits / mo | Not listed | 500 |
- Kit
- Not listed
- Resend
- With add-on
- Kit
- Not listed
- Resend
- No limit
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- 1,000
- Kit
- Not listed
- Resend
- With add-on
- Kit
- Not listed
- Resend
- With add-on
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- 30 days
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- 10 endpoints
- Kit
- Not listed
- Resend
- All events
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
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- Resend
- Kit
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- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
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- Resend
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- Resend
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- Resend
- Kit
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- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- Kit
- Not listed
- Resend
- 500
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Which email providers fit your needs?
Resend features & plan notes
- React Email
- Simple API
- Webhooks
- All Pro features
- 1,000 domains
- Dedicated Slack channel
- 10 webhook endpoints
- 500 AI credits / mo
- SSO with add-on
- Dedicated IP with add-on
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 pricing