Hosting for WooCommerce
WPEngine is best in class hosting for WordPress and almost all of our clients host their WooCommerce shops with them.
WooCommerce Reporting and Follow up emails
We might be a little biased, but we think Shop Plugins has some fantastic WooCommerce plugins. Check them out especially if you need add-ons to use with the WooCommerce Subscriptions plugin.
We use ConvertKit for all of our email marketing. ConvertKit used to be a client and we took care of all of their WordPress plugins that helped content creators connect their WordPress site to their account.
New Relic provides real-time server and application analytics. This is invaluable data when trying to debug site performance.