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Email API for your own SMTP server with webhooks and tracking, no vendor lock-in.
relay.voidvalue.com (powered by turbo0)
relay.voidvalue.com (powered by turbo0)
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One API for 100+ LLMs — GPT-5.4, Claude Opus 4.6, Gemini 3.1 & more.

A comprehensive guide to UX principles for designers, covering core concepts, case studies, and practical implementation tips.
Void Relay is a developer-friendly email API service that allows you to use your own SMTP infrastructure (like Gmail, SendGrid, or AWS SES) while providing a modern API interface similar to services like Resend. Key features include:
Target Users: Developers who want email API functionality but need to maintain control over their email infrastructure. Ideal for startups and tech companies that want to avoid vendor lock-in.
Unique Selling Point: Combines the convenience of modern email APIs (like Resend) with the flexibility of using your own SMTP infrastructure.