An SMTP email server that allows outsiders to relay email messages that are neither for nor from local users. Often exploited by spammers and hackers.
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There is a fine line between advertising and spam and unfortunately many business owners do not understand the difference between the two.
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.
