APIs are the connective tissue of modern software. This hub brings together guides on designing, building, securing, and consuming APIs — from REST and GraphQL fundamentals to authentication, versioning, and documentation.
19 articles · Updated September 23, 2026
Good API design is mostly empathy: clear naming, predictable errors, and docs someone can follow without messaging you.
Hand-picked and latest articles from this topic.
API access and event logs are both standard across most transactional email providers — the meaningful differences show up in price, log retention, and what else gets bundled in. Here's the comparison.

Building your own delivery-status tracking and event plumbing means a database table, a receiving endpoint, and deduplication logic. Hosted transactional email APIs replace all of it — here's which ones, and what they replace specifically.

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Quick answers about this topic hub.
REST exposes multiple endpoints that each return fixed data shapes, while GraphQL exposes a single endpoint where clients request exactly the fields they need. REST is simpler and cache-friendly; GraphQL reduces over-fetching for complex, nested data.
Use HTTPS everywhere, authenticate requests (API keys, OAuth, or JWTs), authorize on the server for every request, validate all input, and rate-limit to prevent abuse. Never trust the client.
Clear endpoint descriptions, request/response examples, authentication steps, and error explanations. Tools like the OpenAPI (Swagger) spec let you generate interactive docs from a single source of truth.