Zimbra 8.0.2 don't found the read receipt option in HTML Standard version

[mdeserventi]

Hi,
why i don't found the read receipt option in HTML standard version when i'm writing an email?

[cvidal]

Check if the mail receipts are enabled in the COS and/or the e-mail account (via the Admin web console).

Otherwise, from the CLI as user "zimbra":

zmprov mc account@your-domain.com zimbraFeatureReadReceiptsEnabled TRUE
zmprov mc account@your-domain.com zimbraPrefMailSendReadReceipts prompt

[mdeserventi]

In admin web panel is enabled the prompt in the cos.
The problem in only for HTML standard version.

Thanks

[mdeserventi]

I have forced in the cos the two parameters:
zmprov mc "CosName" zimbraFeatureReadReceiptsEnabled TRUE
zmprov mc "CosName" zimbraPrefMailSendReadReceipts prompt
But the result is the same. In the html standard version the option "Read Receipt" does not appear.