messages
The officials are still deliberating.
No - it is a verb.
No, the sentence "Is this sentence you have sent no messages from the morning?" is not grammatically correct. It should be revised to: "Have you not sent any messages since this morning?"
Example sentence - There must have been hundreds of fish in the small lake that weighed over 3 pounds.
The diplomatic officials walked into the office.
Militarily, generals outrank other officers. Senior officials outrank junior officials.
Can't see the following sentence anywhere
Some messages will require encryption.
You should not capitalize a sentence fragment following a colon.
The following sentence can be rewritten as an exclamatory sentence by adding an exclamation mark at the end: "I can't believe we won the championship!"
for his boss.
"Officials" is capitalized when it is part of a proper noun (e.g., "National Basketball Association Officials"). Otherwise, when used in a general context (e.g., "sports officials"), it is not capitalized.