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Specifically, I believed that DoubleKiller Pro (DK) (or some alternative see also Linux options) would find many duplicates among the resulting. I believed this would achieve faster and more definitive results than what I was getting from RDM. But at a relatively early stage in this process, I decided to export the emails that I had accumulated in Thunderbird. As detailed below, I would be returning to it later. In the effort to eliminate duplicate emails in Thunderbird, my first attempts to use the Remove Duplicate Messages (RDM) (see also Github) add-on were not very encouraging. Mysteries: the Remove Duplicate Messages (RDM) Add-on For those who proceed, as always, it is prudent to make a backup before proceeding with the kinds of experimentation discussed here. Others may have different needs or may reach different conclusions. Since I did not need an immediate solution, I decided to postpone further work until better tools emerged. Manual inspection may not be an option when dealing with thousands of emails. To tame it, I had to loosen the criteria for duplicate detection, at the expense of potentially deleting “duplicates” that I would not have chosen to delete in a manual inspection. In other words, these tools did not help me to reduce the pile of duplicate emails. Thus, my preferred duplicate-detection tool could not detect that those two exported. For instance, it appeared that exporting the same email from Thunderbird, twice, would not reliably produce two identical. The central problem was that the available tools did not seem up to the task. eml format and to eliminate duplicates among them. This post describes the efforts I made to export those emails to. That merger generated a lot of duplicate emails. pst files, and Thunderbird profiles – and had merged them all into Thunderbird. As described in another post, I had accumulated large numbers of email messages in several places – Hotmail, Outlook.
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