Delayed Jobs with Action Mailer using Mailjet API on a Heroku Rails App -

looking send delayed jobs mailer mailjet's api, emails not being sent. works locally foreman, again, on development on heroku not sending. delayed jobs table created.

here's gemfile

gem 'mailjet'  gem 'delayed_job_active_record' 

the controller

def create     @article = article.new(article_params)      if @article.save     # send email referral email     all_users = user.all     all_users.each |user|       articlemailer.delay.article_confirmation(user,@article)    end     redirect_to @article     else      render 'new'     end end 

the mailer

class articlemailer < actionmailer::base   def article_confirmation(user,article)     @user = user      @article = article      mailjet::messagedelivery.create(       to: user.email,       from: "[email]@gmail",       subject:  "[html]",       html: "[html]    end  end 

the /environments/development.rb file

 config.action_mailer.delivery_method = :mailjet    config.action_mailer.smtp_settings = {     address: "in-v3.mailjet.com",     port: 587,     domain: "[ourdomain].com",     authentication: "login",     enable_starttls_auto: true,     user_name: "[our_username]",      password: "[our_password]",     require_ssl: true   } 

the schema

  create_table "delayed_jobs", force: true |t|     t.integer  "priority",   default: 0, null: false     t.integer  "attempts",   default: 0, null: false     t.text     "handler",                null: false     t.text     "last_error"     t.datetime "run_at"     t.datetime "locked_at"     t.datetime "failed_at"     t.string   "locked_by"     t.string   "queue"     t.datetime "created_at"     t.datetime "updated_at"   end    add_index "delayed_jobs", ["priority", "run_at"], name: "delayed_jobs_priority", using: :btree    create_table "friendly_id_slugs", force: true |t|     t.string   "slug",                      null: false     t.integer  "sluggable_id",              null: false     t.string   "sluggable_type", limit: 50     t.string   "scope"     t.datetime "created_at"   end 

update:

when run delayed::job.last

=> #<delayed::backend::activerecord::job id: 181, priority: 0, attempts: 0, handler: "--- !ruby/object:delayed::performablemailer\nobject...", last_error: nil, run_at: "2014-12-01 19:04:25", locked_at: nil, failed_at: nil, locked_by: nil, queue: nil, created_at: "2014-12-01 19:04:25", updated_at: "2014-12-01 19:04:25">