Mrml

Judgement

What it is

Building block

What it does

A Rust implementation of the MJML email compiler, also usable from Python and WebAssembly.

Adopt it when

You render MJML at high volume or outside Node.js and want speed.

Watch out

May lag behind new MJML features; mostly one maintainer.

Ready for

Usable

Runs as

Library and command line

Built with

Rust, Python and WebAssembly

How established

Established: started 6 years ago, latest release mrml-wasm-v1.6.1.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Mrml → Rust → runs on a microchip

How compilers were built, back to punched paper tape

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