Freedom251 › Transactional Email Software
MailsSetu
What MailsSetu is
MailsSetu is a developer-focused transactional email API and SMTP platform for production messaging. It offers web and API access, and new accounts receive a sandbox TEST key. Messages sent with that key create logs but do not reach real inboxes, so live delivery requires moving beyond sandbox testing. The maker recommends verifying a sending domain and configuring DKIM, SPF, and DMARC before sending live mail.
For delivery visibility, MailsSetu provides real-time logs, a message timeline, open and click tracking, and bounce alerts. Users can create reusable templates with Handlebars-style variables and refer to them through the API. Event webhooks cover delivery, open, click, bounce, and complaint events; endpoint management, secret rotation, and failure replay are also supported. Official SDKs are listed for Node.js/TypeScript, Python, PHP, Go, Java, Ruby, and .NET.
The Free plan costs nothing and includes 3,000 emails per month for sandbox testing. Starter costs ₹399 a month for 60,000 emails, while Growth costs ₹1,199 a month for 3,00,000. A one-time Credits purchase costs ₹799, paid once for 1,00,000 emails that do not expire. Webhooks are excluded from Free, and sends beyond quota fail unless credits are available. MailsSetu describes its service as transactional email, rather than bulk marketing or newsletter software.
Who it suits
MailsSetu suits developers and product teams that need transactional email through an API or SMTP, with delivery logs, templates, and event tracking. The site also names agencies, WordPress and Shopify installs, and AI agents as audiences; it is not positioned for bulk marketing or newsletters.
What it does well
- API and SMTP access with a web dashboard.
- Delivery logs, message timeline, open and click tracking, and bounce alerts.
- Reusable templates support Handlebars-style variables.
- Official SDKs are listed for seven programming language groups.
- Webhook events include delivery, open, click, bounce, and complaint.
What to know first
- Free is limited to 3,000 emails per month and sandbox testing.
- Webhooks are not included in the Free plan.
- Sends beyond quota fail unless credits are available.
- It is not intended for bulk marketing or newsletters.
Limits
Free includes 3,000 emails per month for sandbox testing, and its sends do not reach real inboxes. Webhooks are excluded from Free. Sends beyond quota fail unless credits are available.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 3,000 emails/month · Sandbox testing · API and dashboard access | Free |
| Growth | Monthly · 3,00,000 emails/month · Live sending and operational logs · Priority support and advanced controls | ₹1,199 a month |
| Starter | Monthly · 60,000 emails/month · Live sending and operational logs · API and dashboard access | ₹399 a month |
| Credits | One-time purchase; credits never expire · 1,00,000 emails · Overflow after monthly quota is exhausted | ₹799, paid once |
As app.mailssetu.in lists them, read 8 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the MailsSetu website and create an account.
- Use the sandbox TEST key to send test messages and review their logs.
- Choose a plan for live sending, if needed.
- Verify a sending domain and configure DKIM, SPF, and DMARC before live sending.
- Use the API or SMTP access and consult the listed SDKs and guides for your stack.
Verdict
Choose MailsSetu if you need transactional email with API or SMTP access, operational logs, templates, and delivery events. The Free plan is for sandbox testing, so live sending requires a paid plan; look elsewhere for bulk marketing or newsletter delivery.
Questions
What does MailsSetu cost?
Free costs nothing. Starter is ₹399 a month, Credits is a ₹799 as a one-time purchase, and Growth is ₹1,199 a month.
What is included in the Free plan?
Free includes 3,000 emails per month, sandbox testing, and API and dashboard access. Sandbox sends create logs but do not reach real inboxes.
Which platforms does it support?
MailsSetu lists API and web access.
Are webhooks included in Free?
No. The pricing comparison says webhooks are not included in Free.
Which SDKs are listed?
Official SDKs are listed for Node.js/TypeScript, Python, PHP, Go, Java, Ruby, and .NET.
Is MailsSetu for marketing newsletters?
No. MailsSetu describes itself as a transactional email service and says it is not a bulk marketing or newsletter platform.
Facts from MailsSetu's own pages
- Audience and location
- The site says MailsSetu is built for developers, product teams, agencies, WordPress and Shopify installs, and AI agents, and lists Mumbai, Maharashtra, India. · app.mailssetu.in, 8 Oct 2026
- Automation integrations
- Zapier, Make, and n8n are marked as coming soon on the integrations page. · app.mailssetu.in, 8 Oct 2026
- Delivery visibility
- The platform provides real-time logs, open and click tracking, bounce alerts, and a message timeline. · app.mailssetu.in, 8 Oct 2026
- Domain setup
- The maker recommends a verified sending domain with DKIM, SPF, and DMARC setup before live sending. · app.mailssetu.in, 8 Oct 2026
- Founded
- 2023 · app.mailssetu.in, 28 Sept 2026
- Headquarters
- Mumbai, Maharashtra, India · app.mailssetu.in, 28 Sept 2026
- Integrations
- Official SDKs are listed for Node.js/TypeScript, Python, PHP, Go, Java, Ruby, and .NET, alongside framework and platform guides. · app.mailssetu.in, 8 Oct 2026
- Notable limit
- MailsSetu describes itself as a transactional email service and says it is not a bulk marketing or newsletter platform. · app.mailssetu.in, 8 Oct 2026
- Plan limits
- The pricing comparison says webhooks are not included in Free, organizations are included only in Growth, and sends beyond quota fail unless credits are available. · app.mailssetu.in, 8 Oct 2026
- Product
- MailsSetu is a developer-first transactional email API and SMTP platform for production messaging. · app.mailssetu.in, 8 Oct 2026
- Sandbox
- New accounts receive a sandbox TEST key, and sandbox sends create logs but do not reach real inboxes. · app.mailssetu.in, 8 Oct 2026
- Security
- The security page describes scoped, rotatable API keys, server-side credential use, CSRF protection, key hashing, and signed webhook deliveries. · app.mailssetu.in, 8 Oct 2026
- Support
- The site lists support by email at [email protected] with replies during IST business hours. · app.mailssetu.in, 8 Oct 2026
- Templates
- Users can create reusable email templates with Handlebars-style variables and reference them through the API. · app.mailssetu.in, 8 Oct 2026
- Webhooks
- MailsSetu supports event webhooks for delivery, open, click, bounce, and complaint events, with endpoint management, secret rotation, and failure replay. · app.mailssetu.in, 8 Oct 2026
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