Alternatives to useSend
Open-source transactional email API and SMTP relay positioned as an alternative to Resend,
useSend ranks #11 of 12 in Transactional email APIs, with an Alt Score of 81. It is licensed under AGPL-3.0, open source with paid hosting from $10/mo and available on the web. 11 of 12 checklist rows are verified against a public source.
useSend is an open-source transactional email platform offering a REST API, SMTP relay, campaign/template management, and analytics, deployable self-hosted or via managed cloud. It is built as a directly-branded alternative to Resend, SendGrid, and Postmark for developers who want API parity with an open codebase.
Developers and teams that need to send transactional and marketing email from their own applications, including those who want an open-source, self-hostable alternative to hosted email-sending providers rather than a closed SaaS-only product.
A REST API, SMTP relay, and typed SDKs (Node.js, Python, Go) for sending transactional email, plus a marketing side with a WYSIWYG campaign editor, reusable templates, contact book management, double opt-in, webhooks for delivery/engagement events, automatic suppression of bounced/complained addresses, and per-domain analytics and reputation metrics.
useSend is an AGPL-3.0 licensed application that sends mail through Amazon SES (and receives delivery status via SNS); it can be self-hosted with Docker or Railway using your own AWS credentials and region, or used as usesend.com's hosted cloud service with a free tier plus usage-based paid billing above that.
Why people leave useSend
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Ranked alternatives
Ordered by Alt Score. Click any score to see the breakdown.
Elastic Email is a long-running email delivery service offering a REST API and SMTP relay for transactional sending, along with drag-and-drop templates, suppression list management, and delivery/engag.
MailerSend is a developer-focused transactional email service offering REST API and SMTP relay, dynamic templates, inbound email routing, domain management, and built-in analytics.
Mailgun (by Sinch) is a developer-focused email sending platform with a REST API and SMTP, inbound routing and parsing, templates, deliverability tooling, dedicated IPs, webhooks, and detailed logs an.
Amazon SES (Simple Email Service) is a scalable, pay-as-you-go email sending service from AWS, offering an API and SMTP interface, deliverability and reputation tooling, suppression handling, dedicate.
Mailtrap is a transactional email sending and testing platform used by product and dev teams to send app-triggered emails via REST API or SMTP, plus a sandbox for previewing emails before they hit pro.
Resend is a developer-first transactional email platform offering a clean REST API and SMTP, React-based email templates, webhooks, deliverability tooling, and analytics for sending product and notifi.
SMTP2GO provides SMTP relay and a REST API for sending transactional and bulk email, routed through multiple global data centers for redundancy.
SendGrid (a Twilio company) is an email delivery platform for both transactional and marketing email, offering a REST API and SMTP relay, templates, deliverability and validation tooling, dedicated IP.
ZeptoMail is Zoho's purpose-built transactional email service, separate from its marketing tools, offering a REST API and SMTP relay for app-triggered emails such as receipts and password resets.
Postmark is a transactional email service focused on speed and deliverability, providing a REST API and SMTP relay, templates, inbound parsing, webhooks, detailed message logs, and separate transactio.
Feature comparison
Rows come from the Transactional email APIs checklist (16 rows). Human-verified cells only. ? means the value has not been verified.
| Transactional email APIs checklist | useSend | Elastic Email | MailerSend | Mailgun | Amazon SES | Mailtrap |
|---|---|---|---|---|---|---|
| Pricing model | ||||||
| Starts at | ||||||
| License | ||||||
| Platforms | ||||||
| REST API | ||||||
| SMTP relay | ||||||
| Deliverability tooling | ||||||
| Templates | ||||||
| Inbound email parsing | ||||||
| Webhooks / events | ||||||
| Suppression & bounce handling | ||||||
| Dedicated IPs | ||||||
| Analytics / logs | ||||||
| SDKs | ||||||
| EU data residency | ||||||
| Free tier volume |
Every fact and feature listed for useSend is verified against its own pages. Each alternative is sourced on its own page.
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License AGPL-3.0 verified 2026-07-30
Read directly from the LICENSE file (the README's license badge is an image and was not used as evidence).
GNU AFFERO GENERAL PUBLIC LICENSE Version 3, 19 November 2007
https://github.com/usesend/usesend/blob/main/LICENSE -
Starts at $10/mo verified 2026-07-30
Hosted cloud (usesend.com) 'Paid' plan: $10/mo minimum usage credit, then usage-based at $0.0004/transactional email and $0.001/marketing email. Self-hosting itself has no license fee.
Paid $10 minimum usage per month
https://usesend.com/#pricing -
Pricing model OSS + paid hosting verified 2026-07-30
Self-hostable for free (AGPL-3.0); usesend.com also runs a hosted cloud version with a free tier plus usage-based paid tier.
Open source • Self-host in minutes • Free tier
https://usesend.com/#pricing -
Platforms Web verified 2026-07-30
useSend is a web dashboard/API product (accessed via browser, self-hosted via Docker or used as hosted cloud at usesend.com); no native desktop or mobile client is offered.
Open source • Self-host in minutes • Free tier
https://usesend.com/#pricing -
Status active verified 2026-07-30
Changelog shows a shipped release dated March 2026 (about 4 months before this research date of 2026-07-30), following earlier releases in Feb 2025, Oct 2024 and Sept 2024 — a regular release cadence,
March 2026 v1.9.0 Campaign Personalization with Contact Books
https://docs.usesend.com/changelog#march-2026 -
REST API Yes verified 2026-07-30
Base URL https://app.usesend.com/api/, Bearer token auth.
useSend's API is built on REST principles and is served over HTTPS.
https://docs.usesend.com/api-reference/introduction -
SMTP relay Yes verified 2026-07-30
SMTP credentials documented with ports 465/587/2465/2587; self-hosted deployments can also run an optional separate SMTP proxy server.
Host: smtp.usesend.com
https://docs.usesend.com/get-started/smtp -
Deliverability tooling Yes verified 2026-07-30
Domain API exposes DKIM status, SPF details and DMARC record state (example SPF value: v=spf1 include:amazonses.com ~all). A separate reputation-metrics endpoint reports bounceRate and complaintRate p
dkimStatus ... spfDetails ... dmarcAdded
https://docs.usesend.com/api-reference/domains/create-domain -
Templates Yes verified 2026-07-30
Described as part of the visual, Notion-like WYSIWYG marketing email editor.
Reuse templates and brand styles, and personalize with variables.
https://usesend.com/#features -
Inbound email parsing No verified 2026-07-30
Listed as an unchecked (not implemented) item in the repository's own Features checklist on the current main branch README.
- [ ] Inbound email
https://github.com/usesend/usesend#user-content-features -
Webhooks / events Yes verified 2026-07-30
Documents email/contact/domain event types, signed payloads (HMAC-SHA256), and retry/auto-disable behavior.
Webhooks allow you to receive HTTP POST requests to your server when events occur in useSend, such as when an email is delivered, bounced, or clicked.
https://docs.usesend.com/guides/webhooks#event-types -
Suppression & bounce handling Yes verified 2026-07-30
Also surfaced on the homepage feature grid as 'Suppression List' with import/export and API management.
Hard bounce and complained email addresses are automatically added to the suppression list. Works for both transactional and marketing emails.
https://docs.usesend.com/changelog#suppression-list -
Analytics / logs Yes verified 2026-07-30
Backed by public API endpoints for email time-series and per-domain reputation metrics.
Track deliveries, opens, clicks, bounces and unsubscribes in real time with a simple, searchable log. Filter by domain, status, api key and export them.
https://usesend.com/#features -
SDKs Yes verified 2026-07-30
Official SDKs documented for Node.js, Python and Go; SDK also supports pointing at a self-hosted base URL.
npm install usesend-js
https://docs.usesend.com/get-started/nodejs -
EU data residency Partial verified 2026-07-30
Applies to self-hosted deployments only: you supply your own AWS SES region (which can be an EU region). No EU-specific region or data-residency option is documented for the hosted usesend.com cloud s
In order to send emails, you need to select a region in AWS. Use a region where your users are located / where useSend is hosted.
https://docs.usesend.com/self-hosting/overview#step-3-setting-up-a-region -
Free tier volume Yes verified 2026-07-30
Hosted cloud (usesend.com) free plan: 3000 emails/month, capped at 100 emails/day, 1 contact book, 1 domain, 1 team member. This is a standing free tier, not a time-limited trial. Self-hosting has no
Send up to 3000 emails per month
https://usesend.com/#pricing
FAQ
Yes. Elastic Email, MailerSend and Mailgun have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.
Postal — every license claim links its source.