[Widdershin]

Try add it to the Gemfile of a modern Rails project, the dependencies are very out of date and it won’t install.

[snackernews]

Docs say

> Please don't put mailcatcher into your Gemfile. It will conflict with your applications gems at some point.

[NewJazz]

Commenter was just making the fair point that the dependencies are out of date.

Maintenance doesn't always mean UI redesigns or non-compatible config changes. Sometimes it is just fixing bugs and updating or replacing old dependencies.

[bdcravens]

I always run Mailcatcher as a standalone Docker image (I'm already using Docker Compose for development), with no issues.

[sj26]

It's not designed to go in your Gemfile

gem install mailcatcher

:-)