WorkOS vs Mailgun
The modern identity platform for B2B SaaS
vs. Email API for developers with deep deliverability tooling
Pricing tiers
WorkOS
AuthKit Free
First 1M MAUs free. Unlimited organizations, user management, social OAuth, passwordless.
Free
AuthKit Scale
Per 1M additional MAUs.
$2500/mo
Enterprise / Annual Credits
Custom with 99.99% SLA, guided migration, dedicated support.
Custom
Mailgun
Free
100 emails/day. 1 custom domain, 1-day log retention, 1 inbound route. No credit card.
Free
Basic
$15/month. 10,000 emails/month, no daily limit, 5 inbound routes.
$15/mo
Foundation
$35/month (1st month free). 50,000 emails/month, 1,000 custom domains, 5-day retention.
$35/mo
Scale
$90/month. 100,000 emails/month, SAML SSO, 5,000 email validations, dedicated IP pools, 30-day retention.
$90/mo
Enterprise
Custom. Deliverability services, managed onboarding.
Custom
Free-tier quotas head-to-head
Comparing authkit-free on WorkOS vs free on Mailgun.
| Metric | WorkOS | Mailgun |
|---|---|---|
| mau included | 1000000 users/month | — |
| organizations | unlimited orgs | — |
| staging environments | free envs | — |
Features
WorkOS · 13 features
- Audit Logs — Standardized audit log pipeline with streaming to SIEMs (Splunk, Datadog, Sumo L…
- AuthKit — Complete drop-in user management UI + hosted auth flows. Built on top of WorkOS.
- Directory Sync — SCIM-based user provisioning/deprovisioning from Okta, Azure AD, Google Workspac…
- FGA (WorkOS) — Fine-grained authorization based on Google Zanzibar / OpenFGA.
- Magic Auth — Passwordless email codes + links. Good alternative to password auth for B2B.
- Multi-Factor Auth — TOTP + SMS MFA enrollment and verification APIs.
- Organizations — Multi-tenant B2B primitive. Attach SSO/Directory/Audit to specific customer orgs…
- Passkeys — WebAuthn passkeys as a first-class factor.
- Radar — Fraud protection: device fingerprinting + risk scoring at signup and login.
- Single Sign-On — Plug-and-play SAML 2.0 + OIDC SSO with 30+ identity providers pre-mapped.
- User Management — REST API + webhooks for user CRUD, email verification, sessions, MFA, metadata.
- Vault — Secret storage for tokens + per-tenant credentials.
- Widgets — Embeddable admin portals (SSO setup, directory mapping) that your customers self…
Mailgun · 14 features
- Batch Sending — Send up to 1,000 recipients per API call via recipient variables.
- Dedicated IPs — IP pools with auto warmup. Scale+ tier.
- Deliverability Suite — Inbox placement testing, DMARC reporting, seed lists.
- Email Logs — Searchable log of all send attempts + events.
- Email Templates — Template builder + variables + versioning.
- Email Validation — Real-time email verification (syntax, MX, role accounts, disposable).
- EU Region — Data stored in EU for GDPR-sensitive customers.
- Inbound Routing — Route incoming emails to URLs/SMTP. Attachment forwarding.
- Mailing Lists — Unlimited mailing lists with bulk subscribe/unsubscribe.
- Open/Click Tracking — HTML + text tracking with configurable tracking domain.
- SAML SSO — Scale+ tier.
- Send API — REST/SMTP send with MIME + tracking.
- Tags — Tag messages to slice stats.
- Webhook Events — delivered, opened, clicked, unsubscribed, complained, permanent_fail, temporary_…
Developer interfaces
| Kind | WorkOS | Mailgun |
|---|---|---|
| SDK | workos-go, @workos-inc/authkit-nextjs, workos-java, workos-node, workos-php, workos-python, workos-ruby | mailgun.js (Node), mailgun-php, mailgun-python, mailgun-ruby |
| REST | WorkOS REST API | Mailgun REST API |
| OTHER | Webhooks | Inbound Routing, SMTP Relay, Webhooks |
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