Mailing Lists
Marin County, San Francisco North Bay, Ca. USA

 the mailing list for only contractually agreed-upon times. The mailing list owner typically enforces this by "salting" the mailing list with fake addresses and creating new salts for each time the list is rented. Unscrupulous renters may attempt to bypass salts by renting several lists and merging them to find the common, valid addresses.

Mailing list brokers exist to help organizations rent their lists. For some organizations, such as specialized niche publications or charitable groups, their lists may be some of their most valuable assets, and mailing list brokers help them maximize the value of their lists.

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