Rails Sidekiq on Heroku

I can see the heroku log Enqueued ContactJob (Job ID: 51992323-a2fe-425f-aec7-1f960eaf9e7d) to Sidekiq(default) with arguments: #<GlobalID:0x000055c765545178 @uri=...

Here is my Procfile

web: bundle exec puma -C config/puma.rb
worker: bundle exec sidekiq -q default -q mailers

But it doesn't deliver mail in the production(heroku) but works well in the local..

heroku ps: