# Customer.io Docs: Overview of subscription options

- Canonical HTML: https://growth.iangoh.com/sources/customer-io-docs-overview-of-subscription-options-docs-customer-io/
- Original source: https://docs.customer.io/journeys/channels/subscriptions/overview/
- Domain: docs.customer.io
- Latest check: 2026-06-09
- Channels: Email, Lifecycle Messaging, Retention

## Cited GrowthDex tactics

- [Customer.io channel preferences before global unsubscribe loss](/growth-ideas/customerio-channel-preferences-before-global-unsubscribe-loss/) - Offer channel-level opt-down before a blunt global unsubscribe, so people can stop email or SMS without disappearing from every route.

## Related reading

- [GrowthDex Blog](/blog/)
- [All growth ideas](/growth-ideas/index.md)