ruby on rails - SendGrid not Preserving ActionMailer Template -

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i have rails 4 app on heroku uses sendgrid. created mailer shows digest of user's recent social media posts using twitter's oembed api. problem is, when send message , view in inbox, it's plain text , social media posts missing. not that, none of styling persisted.

what know how preserve template generated mailer user gets nicely formatted html email.

here current sendgrid seetings:

actionmailer::base.smtp_settings = {   :address        => 'smtp.sendgrid.net',   :port           => '587',   :authentication => :plain,   :user_name      => env['sendgrid_username'],   :password       => env['sendgrid_password'],   :domain         => 'heroku.com',   :enable_starttls_auto => true }

i'll post mailer code well, don't know if it's relevant issue. other mailers plain text messages.

<!doctype html> <html> <head>     <meta content='text/html; charset=utf-8' http-equiv='content-type' />     <%= stylesheet_link_tag "employers", media: "all" %> </head> <body>     <div class="panel panel-default">         <div class="panel-body">             <div class="email">                 hi <%= "#{@contact.first_name}" %>,                 <br /><br />                 we’re working hard let know it’s work here @ <%= @company.name %> – it’ll recruit smarter , faster.                 <br /><br />                 amazing if share following on social media – click on social media buttons!                 <br />                 <br style="clear:both" />                 <div class="results-label"><b>recent tweets</b></div>                 <% @tweets.each |tweet| %>                     <%= @company.twitter_client.oembed(tweet, width: 550).html.html_safe %>                 <% end %>                  <div class="results-label"><b>recent linkedin posts</b></div>                 <div class="column-layout cols-1 search-results">                     <div style="max-width: 640px;">                         <% @linkedin_posts.each |post| %>                         <div class="card result-link">                             <div class="content result result-post">                                 <div class="post-textarea">                                     <div class="social">                                         <div class="buttons">                                             <a class="square-btn-med li" href="https://www.linkedin.com/nhome/updates?topic=<%= post.linkedin_id %>"><%= image_tag "icons-ebt.png" %></a>                                         </div>                                     </div>                                     <div class="date-info">                                         <%= "#{post.created_at.in_time_zone("eastern time (us & canada)").strftime("%a, %b %d, %y")}  |  #{post.created_at.in_time_zone("eastern time (us & canada)").strftime("%l:%m %p %z")}" %>                                     </div>                                      <br style="clear:both" />                                     <div class="post"><%= "#{post.post}" %></div>                                 </div>                                 <% if post.attachment_url && post.media_url %>                                 <a class="square-btn-med li" href="https://www.linkedin.com/nhome/updates?topic=<%= post.linkedin_id %>">                                     <div class="image-container social-media-post" style="background-image: url(<%= post.attachment_url %>)"></div>                                 </a>                                 <% elsif post.attachment_url && !post.media_url %>                                 <div class="image-container social-media-post" style="background-image: url(<%= post.attachment_url %>)"></div>                                 <% end %>                             </div>                         </div>                         <% end %>                     </div>                 </div>             </div>              <br style="clear:both" />             <br />             thanks,             <br />             <%= @employer_name %>         </div>     </div> </body> </html>

here mailer code:

class promotionmailer < actionmailer::base     default from: 'myapp <info@myapp.com>'      def new_promotion(contact, company, link, employer_name, employer_email)         @contact = contact         @company = company         @link = link         @subject = "help showcase #{@company.name}’s company culture!"         @employer_name = employer_name         mail(to: @contact.email, from: employer_email, subject: @subject)     end end


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