Domain Arrivals
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Featured in Domain Arrivals · 2026-08-12

Postboi makes messaging channels interchangeable

postboi.app ↗ · Developer Corner · score 82.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A JavaScript API for sending email, SMS, WhatsApp, push notifications, and chat through one small interface.

Why it surfaced

Postboi combines a zero-configuration setup with a fallback chain that tries channels in cost order, while keeping development messages local and unbilled. It also turns a plain HTML form into an email endpoint, including spam checks, rate limiting, and attachments.

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This is one of 1,000 discoveries in the 2026-08-12 Domain Arrivals issue.

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