Instantly

The second version of our API comes with improvements:

API V2 doubles the number of available endpoints compared to V1

API Scopes allow for granular control over API keys and their usage

Allows creating multiple API keys with different privileges

Follows strict naming rules for entities, fields (snake_case), etc.

Real-time documentation updates at <a href="https://developer.instantly.ai" rel="nofollow noopener noreferrer" target="_blank">developer.instantly.ai</a>.

- API V2 doubles the number of available endpoints compared to V1
- API Scopes allow for granular control over API keys and their usage
- Allows creating multiple API keys with different privileges
- Full adherence to REST API standards 
- Follows strict naming rules for entities, fields (snake_case), etc.
- Real-time documentation updates at <a href="https://developer.instantly.ai" rel="nofollow noopener noreferrer" target="_blank">developer.instantly.ai</a>.

<b>API access is available on all Email Outreach plans.</b>

___________________________________________________________

API v1 was deprecated on January 19, 2026.

This deprecation only affects users building directly on API v1.

Integrations that rely on API v1, such as Zapier, will continue to work without disruption.  

To avoid future disruptions, please migrate to API v2 as soon as possible.

- This deprecation only affects users building directly on API v1.
- Integrations that rely on API v1, such as Zapier, will continue to work without disruption.  
- To avoid future disruptions, please migrate to API v2 as soon as possible.

<b>Important: </b>API v2 is not compatible with API v1. A new API key must be generated for v2 endpoints. Please refer to the <a href="https://developer.instantly.ai" rel="nofollow noopener noreferrer" target="_blank">new documentation site</a> for instructions.

API V2

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API V2

What’s New in API V2?

V1 Compatibility