CATEGORY · 16 SERVICES
Compare included quotas, restrictions and official provider documentation.
Resend Free: 3,000 transactional emails/month, 100/day, 3 domains and 10,000 automation runs
Free has a hard daily send cap and 30-day data retention. Pay-as-you-go email overages are only available on paid subscriptions, not an automatic unlimited Free extension. Verify sender domains and deliverability; extra domains, dedicated IPs and higher daily limits require paid plans.
Brevo Free: 300 emails sent/day and storage for up to 100,000 contacts, with no plan expiry
Unused daily sends do not roll over. Campaigns above 300 recipients require manually requeuing remaining contacts; transactional messages can queue up to 1,000 excess sends. Free includes Brevo branding, 1 account user, basic reporting and up to 2,000 unique contacts entering automations. Paid plan required for higher quotas and advanced features.
Free inbound email forwarding for custom domains on Workers Free and Workers Paid; unlimited inbound routed emails
Email Routing is inbound-only; arbitrary outbound Email Sending requires Workers Paid. Sending to verified destination addresses in your own account is free, but it is not a public transactional sending API. Routing via Email Workers consumes Workers usage separately; configure domain DNS/email routing correctly.
10,000 workflow runs/month on Novu Cloud Free; up to 20 workflows, 2 environments (Dev/Prod), 3 team members and all notification channels
No credit card required. Free activity-feed retention is 24 hours and event trigger throughput is limited to 60/sec. Free includes US/EU data residency; removing Novu branding, seven-day retention and increased workflow throughput require a paid plan. Email/SMS delivery providers may charge separately.
10,000 notifications/month; unlimited notification channels and team members; in-app feed, workflow branching, lists and broadcasts
30-day premium-feature trial transitions to ongoing Free; SuprSend branding on in-app feed; multi-channel delivery counts each user/channel separately; email/SMS providers may charge separately; free over-limit sends may continue pending contact from SuprSend; explicit commercial-use terms not confirmed.
Up to 4,000 emails per month and 150 emails per day.
One sending domain, one user and 3 days of logs; not unlimited email.
Up to 1,000 contacts and 4,000 emails per 30 days.
Free-plan branding; transactional and marketing sends share the allowance.
2,500 subscribers and 10,000 emails per month.
Branding on emails; 30-day reporting; one landing page and one form.
10,000 notification sends/month; Journeys and broadcasts; SDKs, CLI and MCP server; Google and GitHub SSO
Beyond the free monthly allowance, Business pricing is $0.005 per send; downstream email/SMS provider charges may apply. Credit-card requirement and explicit commercial-use terms for Developer not confirmed.
6,000 emails/month; 200 emails/day; up to 1,000 contacts; API, SMTP relay and event webhooks
Free support is limited to the first month; daily cap applies and advanced features or removal of branding require a paid plan. Explicit commercial-use terms for Free are unconfirmed.
Free push notification delivery through Expo to FCM and APNs; 600 notifications/second per project; 100 notifications per API request
Requires valid Expo push tokens and platform push credentials; no delivery SLA or guarantee of receipt on the device; Expo Go on Android requires a development build for remote push notifications. Commercial-use terms not independently confirmed.
10,000 emails/month; mobile push and in-app messaging for up to 1,000 monthly active users; web push up to 10,000 subscribers per send.
Free mobile MAU cap applies from October 2026; paid messaging and advanced features are separate.
500 transactional emails per month (up to 100 emails/day); 100 API requests/day; 1 sending domain, 1 API token, 1 webhook and 1 template.
A credit card and account approval are required to activate Free, although the plan is $0. Sending pauses at the quota until reset; 14-day Professional trial is separate and downgrades to Free. Hosted Free commercial-use conditions require confirmation.
Free MIT-licensed local/self-hosted SMTP capture and email-testing server with a web inbox, message search, REST API, HTML/link checks and Docker or single-binary deployment; no vendor software quota.
For development and staging email testing, not a managed email delivery provider. Default automatic pruning retains the latest 500 messages; protect the SMTP and web UI with authentication/network controls, especially when using optional relay/forwarding. You operate any hosting infrastructure.
200 email API requests/month; 2 templates, 1 user seat, 500 contacts and 7-day email history
Free tier is positioned for testing and small projects; requests over monthly limit are dropped. No attachments or custom domain whitelist on Free; commercial-use terms require confirmation.
Free MIT-licensed open-source self-hostable email application with a unified inbox, external email-provider integrations and optional AI-assisted features; no license fee or vendor-provided hosting quota for self-running the code.
This is an email app/client, not a free hosted mailbox or SMTP delivery service. Self-hosting requires Node.js, PostgreSQL, Docker and appropriate configuration; Gmail/Outlook access, Google OAuth, AI models, Cloudflare storage/workers, Twilio, Autumn or other integrations may require credentials and incur separate charges. MIT copyright/license notices apply.
