No, because to mySQL
INSERT IN mail (mailID, senderID, recipientID, time, content) VALUES (NULL, '1', '1', '1', 'Dear Whoever,
blah blah blah')
Is the same as:
INSERT IN mail (mailID, senderID, recipientID, time, content) VALUES (NULL, '1', '1', '1', 'Dear Whoever, blah blah blah')