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Hyvor Relay vs Sessy

Learn how Hyvor Relay and Sessy differ in their key features, development activity, technology stack and community adoption, so you can decide which of these email platforms is best for you.

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Favicon of Hyvor Relay

Hyvor Relay

Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
918stars+18(+2%)

Last 30 days

Screenshot of Hyvor Relay
Favicon of Sessy

Sessy

Track SES deliveries, bounces, opens and clicks in a self-hosted dashboard with real-time search, analytics and reputation monitoring.
941stars+11(+1.2%)

Last 30 days

Screenshot of Sessy

Detailed Comparison

Hyvor Relay appears to have several advantages over Sessy, particularly in growth and licensing. Consider your specific needs regarding popularity, growth, activity, technology, maturity, licensing and features when making your decision.

Comparable
Community & Popularity

Both Hyvor Relay and Sessy show comparable community engagement with 918 and 941 stars respectively. In terms of developer contributions, Hyvor Relay has 66 forks, indicating growing developer engagement.

Hyvor Relay wins
Growth Momentum

Hyvor Relay is growing faster, adding 18 stars in the last 30 days (+2%) against adding 11 stars for Sessy (+1.2%). Hyvor Relay is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable
Development Activity

Both projects show recent activity, with Hyvor Relay last updated 4 days ago and Sessy 5 days ago.

Comparable
Technology Stack

Both tools share common technology foundations, being built with JavaScript, CSS. However, they differ in their additional technology choices: Hyvor Relay uses Bash, Typescript, Golang, PHP, SvelteKit while Sessy leverages Ruby.

Comparable
Project Maturity

Both projects started around the same time, with Hyvor Relay beginning 1 year ago and Sessy 10 months ago.

Hyvor Relay wins
Licensing

Hyvor Relay is licensed under AGPL-3.0, while Sessy's license terms are not publicly specified.

Comparable
Use Cases & Features

Both tools serve similar use cases in Email Platforms.

Comparable
Hosting & Deployment

Both Hyvor Relay and Sessy offer self-hosting capabilities, giving you full control over your data and infrastructure.