We currently offer integration with 3 third party tools.
You can automatically let Yumpu import magazines from Dropbox into your account in regular time intervalls. Read more about that here
We offer a Wordpress plugin that can be used to upload PDF files and then insert the converted magazine into posts and pages. More about the plugin here
With Zapier you can automate the Yumpu workflow in combination with other third party services like JotForm or Formstack. Read more about the Zapier integration here