Alternatives
Products that do what Email SDK does
One email SDK for every provider
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Hi HN! We’re Aleem, Chris, Borys, Meichen and Zach from Streak (YC S11) and today we’re open sourcing our InboxSDK https://www.inboxsdk.com, which makes it easy to build apps for Gmail. Over 1.8B users spend their days in Gmail! Having your app built into the Gmail workflow is a better user experience and gives you great user retention. InboxSDK gives you a high-level, declarative API to insert your UI into Gmail without having to directly manipulate the DOM yourself. End users install a browser extension to use your app. The SDK can add UI to multiple areas of Gmail. For example,…
2022
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1,000+ Emails per Second with 99%+ Deliverability
Mar 2026 · mailercloud.com
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Unitpost▲26Email component library that works in Outlook, Gmail, and Apple Mail. MIT. Install with npm or a Skill. No account.
5d ago · unitpost.com
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Hi Hacker News! My name is Sagar, I’m working on a startup called Speakeasy - we’re making all APIs self-service. The platform is currently in beta, but we’re independently launching this tool which you can use to generate language-idiomatic, statically-typed TS SDKs from any public OpenAPI schemas. We hope to continue iterating on this to give devs a way to easily generate high fidelity client SDKs for all the major languages. Inspiration for this product is from past experiences struggling with OpenAPI. I was originally optimistic about using the OpenAPI tools to build out our offering,…
2022 · easysdk.xyz
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Build, customize, and ship emails — all from your own app
Apr 2026 · resend.com
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2021 · batsign.me
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A powerful SDK for detecting disposable email addresses
Oct 2025
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