How do Klaviyo and Resend prices compare?

Klaviyo: custom or unlisted usage pricing at 10,000 profiles. Resend: $90/month on Scale at 100,000 emails. Different billing units are not an equal-workload comparison. Estimates exclude unlisted add-ons and taxes.

What matters for transactional email?

Review SMTP or API integration, domain authentication, bounce and complaint events, suppression handling and delivery-log retention.

Can I compare marketing and agent email by sends?

Only when the published plan actually bills by sends. Contacts, subscribers and inboxes stay in their own billing units.

What features and free access does Klaviyo list?

E-commerce data, Omnichannel, Shopify ecosystem. Free access: Limited free plan. Check plan-specific availability and current terms on the provider's official pricing page.

What features and free access does Resend list?

React Email, Simple API, Webhooks. Free access: 3,000 emails/mo. Check plan-specific availability and current terms on the provider's official pricing page.

Email APIs · side by side

Klaviyo vs Resend

Compare Klaviyo, 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.

Klaviyo

Number of profiles

10K

Resend

Monthly emails

100K

Klaviyo

Custom / not listed

Custom / unlisted usage pricing · 10K profiles

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	Klaviyo	Resend
Provider	Klaviyo	Resend
Billing unit	profiles	emails
Plan at selected usage	Custom / unlisted usage pricing	Scale
Monthly estimate	Custom / not listed	$90/mo
Workload	10K profiles	100K emails
Free access	Limited free plan	3,000 emails/mo
Published plans	Free	Free, Pro, Scale, Enterprise
Prices checked	2026-10-08	2026-10-08

Provider

Klaviyo: Klaviyo
Resend: Resend

Billing unit

Klaviyo: profiles
Resend: emails

Plan at selected usage

Klaviyo: Custom / unlisted usage pricing
Resend: Scale

Monthly estimate

Klaviyo: Custom / not listed
Resend: $90/mo

Workload

Klaviyo: 10K profiles
Resend: 100K emails

Free access

Klaviyo: Limited free plan
Resend: 3,000 emails/mo

Published plans

Klaviyo: Free
Resend: Free, Pro, Scale, Enterprise

Prices checked

Klaviyo: 2026-10-08
Resend: 2026-10-08

Email APIs monthly cost

Klaviyo: Not pricedResend: $90

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	Klaviyo	Resend
Sending methods	Not listed	Not listed
Inbound processing	Not listed	Not listed
Sending domains	Not listed	Not listed
Activity retention	Not listed	Not listed
Webhooks & events	Not listed	Not listed
Dedicated IP	Not listed	Not listed
Single sign-on	Not listed	With add-on
Support	Not listed	Not listed
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

Sending methods

Klaviyo: Not listed
Resend: Not listed

Inbound processing

Klaviyo: Not listed
Resend: Not listed

Sending domains

Klaviyo: Not listed
Resend: Not listed

Activity retention

Klaviyo: Not listed
Resend: Not listed

Webhooks & events

Klaviyo: Not listed
Resend: Not listed

Dedicated IP

Klaviyo: Not listed
Resend: Not listed

Single sign-on

Klaviyo: Not listed
Resend: With add-on

Support

Klaviyo: Not listed
Resend: Not listed

Daily limit

Klaviyo: Not listed
Resend: No limit

Inbound emails

Klaviyo: Not listed
Resend

RESTful API

Klaviyo: Not listed
Resend

SMTP relay

Klaviyo: Not listed
Resend

Official SDKs

Klaviyo: Not listed
Resend

Schedule emails

Klaviyo: Not listed
Resend

Batch sending

Klaviyo: Not listed
Resend

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Which email providers fit your needs?

Klaviyo features & plan notes

E-commerce data
Omnichannel
Shopify ecosystem

Full pricing Official Pricing

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

Full pricing Official Pricing

How to compare email providers

Browse Email APIs pricing

Klaviyo vs Resend — FAQ

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