Some people do it every 2-4 weeks, even if using the same exact data. Others clean that data once and until they add more, do not clean it again. Thoughts? :vroam:
You might want to elaborate on what methods of cleansing you're referring to. There's 3rd party scrubbing companies that have a large list of blacklisted domains and email addresses that will basically cross check your list against theirs, removing any offending names. In this case, usually one initial scrub is sufficient. Of course, depending upon where your fresh data is being acquired from, it might need this treatment as well. The other side of the cleansing coin might fall a bit more under the data/list management side of things. This is an ongoing cleansing of your list, and this process should never cease. Removal of hard bounces, soft bounces when a certain bounce count is reached, and complaint/unsubscribe removals are all important aspects that are typically handled by your ESP/Software.
Yes, please be more specific? However, I believe chrisVoloPM, did a good job in defining how to scrub data.The process is ongoing and it also is dependent on the type of mailing ie. GI or WL/TLD since they are to be treated differently when managing them. For example, yahoo list shouldn't have in-actives over 60days, however there has been some debate over that since some say 30,60, 90...just to be safe I keep it at 60. It's really in every mailers best interest to keep their list clean and active, however be careful on how you "dump" data since large spikes in HB may cause blocking issues when shifting data.