Upon receiving an email for a mobile station containing a subject and a body, the subject and body are combined into a first message. If the email contains an attachment, the first message can be converted into a MMS message. If there is no attachment, the number of characters in the first message can be counted. If the number of characters is less than or equal to a first number of characters, the first message can be converted to a SMS message. If the number is greater than the first number of characters and less than or equal to a second number of characters, the first message can be converted to an EMS message. In addition, if the number of characters is greater than the second number of characters, the first message can be converted to the MMS message.