Assertion: thunderbird | /r/HasProperty | offline
Facets:
Source sentences:
text: Thunderbird has an Outbox folder in the Local Folders account for deferred or delayed sending, for example when Thunderbird is offline.
text: If the option is checked, Thunderbird is offline.
text: If the Icon has a red marker with an X in it, Thunderbird is offline.
text: If Thunderbird is offline, then the Send button in the Write window changes to Send Later, which stores the message in the Outbox.
text: When Thunderbird is offline and you switch it online, and there are unsent messages in the Outbox, Thunderbird normally asks you whether you want to send them.