Cargo Features

[dependencies]
mail-send = { version = "0.4.7", default-features = false, features = ["builder", "parser", "dkim", "digest-md5", "cram-md5"] }
default = builder, cram-md5, digest-md5, dkim

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

builder default = mail-builder
parser = mail-parser
dkim default = mail-auth
digest-md5 default = md5, rand
cram-md5 default = md5

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

mail-auth dkim
mail-builder builder
mail-parser parser?
rand digest-md5
md5 cram-md5 digest-md5