Google's John Mueller advises using semantic HTML. Though not a ranking factor, it helps search engines understand content and boosts accessibility.

Basic HTML Tags and Their Proper Use in Email. When you build HTML email content, ... All in all, follow these main ideas when organizing HTML emails with semantic structure.

Semantic HTML5 provides us with an opportunity to improve our websites and optimize for search engines. We can take full advantage of these opportunities by using machine-readable semantic HTML5 ...

An SEO said "Proper HTML semantics and tag hierarchy must be a quality signal." John Mueller responded saying "I don't see it as a quality signal." But it is not something that does not help Google.

Google’s John Mueller answered a question as to whether the “ARTICLE” semantic HTML element has an impact on Google Search. This is a good question because the use of semantic HTML is ...