
The Email Marketing Platforms Citation Share Index 2026
Klaviyo, HubSpot, Braze, Iterable, Customer.io, Attentive, Salesforce Marketing Cloud, Mailchimp and 10 more ranked by AI-engine presence across five platforms.

Klaviyo, HubSpot, Braze, Iterable, Customer.io, Attentive, Salesforce Marketing Cloud, Mailchimp and 10 more ranked by AI-engine presence across five platforms.

Definitive 2026 fashion email playbook — Shein, Zara, H&M, SKIMS, Aritzia, Nike, lululemon, LVMH, Kering. Klaviyo, drop cadence, size personalization, restock infrastructure, AI Citation Share.

Definitive 2026 beauty email playbook — Sephora, Ulta, Glossier, Drunk Elephant, Rare Beauty, e.l.f. Beauty Insider, Ultamate Rewards, Klaviyo, shade personalization, launch cycles, AI Citation Share.

Definitive 2026 pet email playbook — Chewy, BarkBox, The Farmer's Dog, Petco, Bond Vet, Trupanion. Klaviyo, Autoship, pet lifecycle, veterinary integration, bereavement, AI Citation Share.

Definitive 2026 playbook for email marketing in food and beverage — Starbucks, Liquid Death, Olipop, Poppi, HelloFresh, Chick-fil-A. Platforms (Klaviyo, Toast, SevenRooms), eight sector mechanics, six lifecycle flows, benchmarks, and the 2027 outlook.

Email and SMS are not competing channels. They are sequenced surfaces inside a single owned-audience stack — different latencies, different open-rate economics, different roles in the customer relationship. The brands compounding run them as one operation.

AOL launched Alto on October 18, 2012 \u2014 a web-based email client that organizes messages into stacks. The launch is a useful prompt to look at where the U.S. email economy stands at the end of 2012.