The majority of the work is done in-house. True native English speakers do all our language-related work. Any technical work, such as web creation, done by non-native speakers, is either language-agnostic or is thoroughly proofread. Indeed, many editing, writing, and marketing (and tech, etc.) companies outsource work to countries such as India and the Philippines. Then they keep the profits and send the clients inferior work. That’s unethical and it’s bad business. Aside from what’s usually a big drop in language quality, we find it highly disingenuous to charge North American or European rates for work done by people in less-advanced economies.