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I tried both unlimitedmailinglist and salesdatapro. Salesdatapro was a little better than unlimited but both of them had a substantial amount of disconnected and wrong numbers. I'm lucky if I get one good number out of 36 numbers per excel spreadsheet I'm still searching for a new source.
Any word on a new company?
The real challenge with any budget solution is that it's going to be at the mercy of what's available. John Spangler is involved/owns/whatever SalesDataPro.com and we (ListShack) have sold them data for years. There are ways to try to clean data up in bulk, but fundamentally the task of maintaining accuracy is very difficult. That's partially why InfoGroup was able to succeed in their lawsuit against InfoFree; InfoGroup successfully argued that their tremendous investments in having the most accurate data were important enough to warrant protection.
Depending on the year, with the ListShack data, we've done NCOA scrubs and things like that and it helps, especially if we didn't resell the scrubbed data in bulk, but the real trick would be to partner with a call center and/or provide an interface that allows for users to report bad data as a feedback loop so this way the data is constantly getting pruned with updates. Until that's done, it'll be really hit and miss with any budget providers.