> For the complete documentation index, see [llms.txt](https://docs.simicart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simicart.com/features/subscription-and-marketing.md).

# Subscription & Marketing

- [Klaviyo Email Subscription](https://docs.simicart.com/features/subscription-and-marketing/klaviyo-email-subscription.md): Collect customer emails in your mobile app and sync them with Klaviyo to send welcome emails, promotions, and marketing campaigns automatically.
- [Omnisend Email Subscription](https://docs.simicart.com/features/subscription-and-marketing/omnisend-email-subscription.md): Collect customer emails in your mobile app and sync them with Omnisend to send welcome emails, promotions, and marketing campaigns automatically.
- [Meta SDK integration](https://docs.simicart.com/features/subscription-and-marketing/meta-sdk-integration.md)