XML sitemap plugin

Using WP Hydra and loving it but submitting sitemaps to google wmt are a hassle.

Thus far my solution is to use a third party webservice to crawl my website for each domain and upload each sitemap to the website individually and also enter the url in wmt.

I’d love a solution that automatically creates an XML sitemap for each domain thus omitting the process of creating and uploading X number of sitemaps every time I rename or add an article.

Any help on the existence of such a service/plugin?

https://wordpress.org/plugins/wp-hydra/