Would it be possible to add a feature that allows the user to delete multiple attachments in one go through the 'Manage Attachments' feature?
We regularly update a JIRA issue by sending emails to it (great feature!) and are finding that our issues are getting cluttered with email signature logos. Deleting each logo individually results in a notification emails being repeatedly sent to viewers which is causing a lot of frustrations.
Alternatively (or in addition), the issue could be resolved by configuring JIRA not to attach any email attachments to an issue which would necessitate the user to manually attach the file if required.
Both approaches have a pros and cons and might be useful depending on how the system is being used.