You can use the Search feature in offline mode to search your Mail or Contacts.
The following search filters and options are supported:
subject
from, to, cc, tocc
tag
folder
size
status read/unread/flagged/unflagged
date sent on/before/after
has:attachment
attachment type (only in query syntax, not from the user interface)
Conditional search options (and, or, not). For example, in:contacts and tag:one.
Saved searches.
Contact search based on first name, last name, middle name, email address, company name and job title.
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