The **attachment:** prefix can be used to search for specific filenames
(or extensions) of attachments to email messages.
The **attachment:** prefix can be used to search for specific filenames
(or extensions) of attachments to email messages.
For **tag:** and **is:** valid tag values include **inbox** and
**unread** by default for new messages added by **notmuch new** as well
as any other tag values added manually with **notmuch tag**.
For **tag:** and **is:** valid tag values include **inbox** and
**unread** by default for new messages added by **notmuch new** as well
as any other tag values added manually with **notmuch tag**.