You may be charged for more than one call/message when you use certain features resulting in multiple inbound or outbound calls/messages (such as call forwarding, call waiting, voicemail, conference calling, and multi-party messaging). You will be charged for text, instant or picture messages, and email whether read or unread, sent or received, solicited or unsolicited. We use filters to block spam messages, but we do not guarantee that you will not receive spam or other unsolicited messages.