| Field Guide to North American Feedback Loops |
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| White Papers | |
| Written by Lyris HQ Staff Writer | |
| Wednesday, 13 February 2008 | |
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Both ISP feedback loops and whitelists are a privilege, not a right. You have to apply for them, and each ISP has a slightly different process. This whitepaper explains how feedback loops and whitelists work, as well as how to use them to improve your email deliverability.



