Cargo Features

[dependencies]
etwin_mailer = { version = "0.12.3", default-features = false, features = ["json", "html", "neon"] }
default = html, json

These default features are set whenever etwin_mailer is added without default-features = false somewhere in the dependency tree.

json default
html default

Features from optional dependencies

neon implicit feature

Enables neon ^0.10.1

neon:

A safe abstraction layer for Node.js