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Note: Only ESIGN, WETSIGN, REVIEW providerTypes below. Adding other provider types at later date (12/15/20)

When creating a disclosures package (https://developers.blend.com/blend/reference#post-a-package), there are multiple ways to provide documents to recipients. For some documents, recipients need to electronically view and sign while others require the recipient to physically sign and re-upload.

When a package is created via POST or retrieved via GET, the envelope associated with the package will contain the recipients and (if applicable) the documents that recipients need to take action on. To determine the kind of envelope will be submitted to the recipient, the `providerType` can be used.

## Envelope Metadata

For each different kind of envelope created for a package, the contents of the `metadata` in the envelope will follow a different schema. Below is the envelope schema response for both https://developers.blend.com/blend/reference#retrieve-all-packages-for-an-application and https://developers.blend.com/blend/reference#retrieve-a-package. 


For more information on what the metadata schema would look like, please scroll down to find the corresponding provider type and its schema.
## Provider Types
## ESIGN
E-sign envelopes contain documents that need to be electronically viewed and signed through DocuSign.
In order to create an envelope of this type, document IDs and their corresponding tabs are expected to passed in via https://developers.blend.com/blend/reference#post-a-package. That information will be store in the `metadata` field and then can be retrieved via GET requests (https://developers.blend.com/blend/reference#retrieve-all-packages-for-an-application and https://developers.blend.com/blend/reference#retrieve-a-package).

## WETSIGN
Wet-sign envelopes contain documents that recipients need to physically sign and then re-upload.
Similar to other envelopes, the WETSIGN envelope contains metadata created via  https://developers.blend.com/blend/reference#post-a-package and can be retrieved via GET requests (https://developers.blend.com/blend/reference#retrieve-all-packages-for-an-application and https://developers.blend.com/blend/reference#retrieve-a-package)

## REVIEW
Review envelopes contain documents for recipients where recipients need to only view electronically. 
Similar to other envelopes, the REVIEW envelope contains metadata created via  https://developers.blend.com/blend/reference#post-a-package and can be retrieved via GET requests (https://developers.blend.com/blend/reference#retrieve-all-packages-for-an-application and https://developers.blend.com/blend/reference#retrieve-a-package)