Inbixio Blog

Guides for email that lands.

Practical, code-first articles on sending email from your product: the Inbixio API, SMTP settings, deliverability, and the transactional emails users actually wait for.

Guides

Send your first email with Inbixio in 5 minutes

A step-by-step quickstart: create your account, connect your SMTP server, generate an API key and send your first email with a single HTTPS request.

October 28, 20265 min read

Product

Choosing an email API plan: how to estimate your monthly volume

Estimate how many emails your product sends each month, with worked examples, and how to match the result to Inbixio’s Starter, Growth and Enterprise plans.

October 28, 20264 min read

Security

Email API key security: scopes, rotation and where keys belong

A leaked email API key lets anyone send mail as your company. How to scope Inbixio keys, store them safely, rotate them without downtime and respond to a leak.

October 28, 20264 min read

Deliverability

Email deliverability checklist: SPF, DKIM and DMARC for SaaS

Why your app's emails land in spam, and the DNS records that fix it. A practical SPF, DKIM and DMARC setup guide, plus Gmail and Yahoo's sender requirements.

October 28, 20265 min read

Guides

Handling email API errors and limits: status codes, retries and monitoring

What each Inbixio API response means, which errors to retry and which to fix, how monthly limits work, and how to monitor delivery in production.

October 28, 20266 min read

Guides

How to send transactional email from Node.js, Python and cURL

Copy-paste examples for sending email through a REST API from Node.js, Python, PHP and the command line, with timeouts, error handling and a reusable helper.

October 28, 20264 min read

Security

OTP and verification emails: speed, security and best practices

How to generate, store and email one-time codes and verification links securely, with fast delivery, sensible expiry and rate limits, and a template users trust.

October 28, 20264 min read

Security

Password reset emails users trust (and that land in the inbox)

Build a secure password reset flow: single-use tokens, short expiry, no account enumeration, a clear email template and a confirmation once the password changes.

October 28, 20264 min read

Guides

SMTP settings explained: host, port 587, TLS and app passwords

What each SMTP setting means, which port to use, how TLS works, and the exact settings for Google Workspace, Microsoft 365, Zoho and hosting-provider mailboxes.

October 28, 20265 min read

Product

SMTP vs email API: which should your app use?

SMTP and HTTP email APIs both send mail, but they behave very differently inside an application. Here is how they compare, and why you can use both.

October 28, 20264 min read

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