How to download and setup language-mjml
Open terminal and run command
                                            git clone https://github.com/mjmlio/language-mjml.git
                                        
                                        git clone is used to create a copy or clone of language-mjml 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 language-mjml https://github.com/mjmlio/language-mjml/archive/master.zip
Or simply clone language-mjml with SSH
                                            [email protected]:mjmlio/language-mjml.git                                    
                                    If you have some problems with language-mjml
You may open issue on language-mjml support forum (system) here: https://github.com/mjmlio/language-mjml/issuesSimilar to language-mjml repositories
Here you may see language-mjml alternatives and analogs
atom nylas-mail responsive-html-email-template PHPMailer awesome-falsehood MagicPython Handlebars themecreator bojler dracula-theme community-edition alertmanager prettier-atom linter-eslint mailinabox python-tools CocoaDebug platformio-atom-ide codelf hydrogen teletype awesome-atom markdown-preview-enhanced go-plus atom-beautify simplepie atom-vim-mode-plus apm vienna-rss atomic-chrome