[media-types] [IANA #1444028] application/vnd.zoho.s preadsheetml.sheet registration request

Hi Darrel,

Sending a reminder for this request from February 13th.

thanks,
Amanda

On Fri Feb 13 18:57:59 2026, amanda.baber wrote:
> Hi Darrel,
> 
> We've received another request from zoho (in addition to the one that
> came in Wednesday). Would it be possible to review this by February
> 27th?
> 
> I'm assigning this one to you because you have the existing zoho
> request, but I know the queue is unusually heavy at the moment, so let
> me know if I should ask Murray to take this one instead.
> 
> As noted earlier, they have received your recommendation that they
> publish a spec.
> 
> thanks,
> Amanda
> 
> =====
> 
> Name: Manivannan Subburaj
> 
> Email: [email protected]
> 
> Media type name: application
> 
> Media subtype name: vnd.vnd.zoho.spreadsheetml.sheet
> 
> Required parameters: N/A
> 
> Optional parameters: N/A
> 
> Encoding considerations: binary
> 
> Security considerations: This sub-type is intended for spreadsheet
> documents and is represented as a ZIP container comprising multiple
> structured components, some of which are XML files.
> 
> A document of this sub-type does not contain macros. A document of
> this sub-type may contain executable contents other than Macros or
> Embedded UI Controls, since the underlying ZIP, allow such contents.
> 
> A .zsheet file may include formulas, embedded objects, non-encrypted
> personal information or links to external resources. Applications
> should consider the security implications of processing such content
> and of resolving external references.
> There are no mechanisms in .zsheet spreadsheet to verify the integrity
> of spreadsheets (e.g. digital signatures). Users have to rely on
> external applications, should such integrity verification be required.
> 
> As with most application types this data is intended for
> interpretation by a program that understands the data on the
> recipient's system. Recipients need to understand that they are at the
> "mercy" of the sender, when receiving this type of data, since data
> will be executed on their system, and the security of their machines
> can be violated.
> 
> Interoperability considerations: None
> 
> Published specification: None
> 
> Applications which use this media: Zoho Sheet
> 
> Fragment identifier considerations: None
> 
> Restrictions on usage: None
> 
> Provisional registration? (standards tree only): No
> 
> Additional information:
> 
> 1. Deprecated alias names for this type: None
> 2. Magic number(s): 50 4B 03 04 as in ZIP
> 3. File extension(s): zsheet
> 4. Macintosh file type code: No specified Macintosh file type code(s)
> for Zoho Sheet.
> 5. Object Identifiers: None
> 
> General Comments:
> 
> Person to contact for further information:
> 
> 1. Name: Sankar, Srikanth
> 2. Email: [email protected], [email protected]
> 
> Intended usage: COMMON
> 
> Author/Change controller: [email protected]

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