action_mailer_matchers
                                ActionMailerMatchers provides rspec matchers to test Rails' common ActionMailer functionality.
                            
                        How to download and setup action_mailer_matchers
Open terminal and run command
                                            git clone https://github.com/contently/action_mailer_matchers.git
                                        
                                        git clone is used to create a copy or clone of action_mailer_matchers repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with action_mailer_matchers https://github.com/contently/action_mailer_matchers/archive/master.zip
Or simply clone action_mailer_matchers with SSH
                                            [email protected]:contently/action_mailer_matchers.git                                    
                                    If you have some problems with action_mailer_matchers
You may open issue on action_mailer_matchers support forum (system) here: https://github.com/contently/action_mailer_matchers/issuesSimilar to action_mailer_matchers repositories
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