Deliverability insights,
tutorials & product news
Engineering deep-dives, best practices, and product updates from the MailSetu team.
How to Improve Email Deliverability: The Complete 2025 Guide
Inbox placement isn't luck — it's engineering. We break down SPF, DKIM, DMARC, bounce rate thresholds, and list hygiene best practices so your transactional emails land in the primary inbox, not spam.
Build Beautiful Emails with React Email + MailSetu
React Email lets you write email templates as JSX components with full TypeScript support. Learn how to render them server-side and send via MailSetu in three lines of code.
DKIM, DMARC, and SPF Explained — Without the RFC Jargon
Three email authentication standards power virtually every inbox filter. Here's what they actually do, how they interact, and the exact DNS records you need to publish for MailSetu domains.
Why Indian Startups Deserve a Rupee-Priced Email API
Dollar-billing email providers cost Indian startups 3× more after FX fees — and their invoices aren't GST-compliant. We built MailSetu because the status quo was hurting the ecosystem.
Transactional vs Marketing Email: Why the Difference Matters
Mixing OTP emails and newsletters on the same IP pool is a deliverability disaster waiting to happen. Learn how to separate sending infrastructure, warm up IP addresses, and protect your sender reputation.
Build Real-Time Email Dashboards with MailSetu Webhooks
MailSetu emits webhook events for every email state change: queued, delivered, bounced, complained, clicked. Learn how to consume them in Next.js, Express, and Django with signature verification.
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