Guides, tutorials, and comparisons for developers building with LANGR API.
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SMS OTP API Guide — Verify Users with One API Call
Learn how to implement SMS OTP verification using the LANGR API. Send and verify OTP codes with a single API and TypeScript SDK.
2026-06-05
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How to Send Multilingual Transactional Email with One API
Send transactional email in 120+ languages using the LANGR API. Combine Mail and i18n services for global email delivery.
2026-06-04
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LANGR vs Twilio vs SendGrid vs Resend — Choosing the Right API
Compare LANGR API with Twilio, SendGrid, and Resend. See which developer API covers email, SMS, auth, payments, and translation in one platform.
2026-06-03
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How to Send Email from Next.js with LANGR API
Complete tutorial for sending transactional email from Next.js using LANGR API. Server actions, API routes, and edge functions.
2026-06-02
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Best Free Email API in 2026 — Send Transactional Email for $0
Compare the best free email APIs in 2026. LANGR, Resend, SendGrid, and Mailgun free tiers for transactional email delivery.
2026-06-01
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Implement SMS OTP Verification in Node.js — Complete Guide
Step-by-step guide to adding SMS OTP phone verification to your Node.js app using LANGR API. Express, Fastify, and plain Node examples.
2026-05-31
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Why We Built an All-in-One Developer API
The story behind LANGR API — why we combined email, SMS, auth, payments, SEO, content, and i18n into a single API with one SDK.
2026-05-30