
Email Marketing
Content and Email Marketing Are One Stack: HubSpot, Mailchimp, Klaviyo, Substack, Glossier
Content and email marketing are no longer separate functions. HubSpot, Mailchimp, Klaviyo, Substack, theSkimm, Morning Brew, Patagonia, American Express, Glossier — the brands compounding in 2026 operate them as a single integrated owned-media stack.

