application/sieve is a application media type commonly associated with .siv, .sieve extensions.
Quick facts
What is application/sieve
application/sieve is one of the application media types used on the internet. When serving this content over HTTP, set the Content-Type header in the response, for example:
Content-Type: application/sieve
Related entities: associated extensions include .siv、.sieve, and is delivered over HTTP via the Content-Type header, commonly with GET, POST, PUT and PATCH requests.
Related formats:
Relation chain
Related extensions
Related MIME types
Used with
Related headers
Related methods
Frequently asked questions
application/sieve is a application media type used to identify a content format; servers announce it to clients with the Content-Type header.
Extensions such as .siv, .sieve are associated with this MIME type.
Send Content-Type: application/sieve in the HTTP response.
Sources & standards
Updated 2026-09-13
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