# Email & SMS — technologies

[HTML leaderboard](https://consumer-brand-index.vercel.app/tool/category/email-sms) · 3 technologies ranked by adoption across the index

> Data note: every section below is source-tagged and most of the current
> dataset is generated sample data — not factual claims about this brand.
> Only sections whose provenance line says `real data` reflect a live
> source. See [methodology](https://consumer-brand-index.vercel.app/methodology.md).

## Ranked by adoption

| # | Technology | Adoption |
| --- | --- | --- |
| 1 | [Klaviyo](https://consumer-brand-index.vercel.app/tool/klaviyo) (klaviyo.com) | 55 brands |
| 2 | [Attentive](https://consumer-brand-index.vercel.app/tool/attentive) (attentive.com) | 17 brands |
| 3 | [Postscript](https://consumer-brand-index.vercel.app/tool/postscript) (postscript.io) | 4 brands |

## See also

- [Interactive leaderboard (HTML)](https://consumer-brand-index.vercel.app/tool/category/email-sms)
- [All technology categories](https://consumer-brand-index.vercel.app/tool/category)
- [All technologies](https://consumer-brand-index.vercel.app/tool)
- [Methodology](https://consumer-brand-index.vercel.app/methodology.md)