mail-internals is used at run time in 7 crates. It is a direct run-time dependency in 6 crates.

Depender (with downloads and own rev deps) mail-internals version
6 mail-headers ^0.2.3
5 mail-core ^0.2.3
1 mail-template ^0.2.3
feembox ^0.2
2 mail-smtp ^0.2.3
mail ^0.2.3