ThemeForest - Optimax v1.6 - SEO & Marketing WordPress Theme - 28298431 Optimax is one of the best WordPress themes for SEO & digital marketing. You get an astounding number of features with this theme, which don’t affect the theme’s clean and neat layout. It is perfect for digital marketing, email marketing, and SEO service providers. Optimax also boasts a plethora of exclusive features that make it suitable for software development companies and web service providers.