You can set up the built-in firewall on your BlackBerry smartphone to block unwanted messages, such as incoming text messages or email messages. If you are blocking messages, you can make exceptions so that your contacts, specific phone numbers, or email addresses aren't blocked.
Even though you don't receive blocked messages on your smartphone, blocked messages might contribute to data usage in your wireless service plan. You can stop email messages from being forwarded to your smartphone by turning off email message forwarding or by using email message filters.
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