On Thu 31 Jul 2025 at 12:27, Alan Schmitt <alan.schmitt@polytechnique.org> wrote:
> (which is significant as all my messages where duplicated). Is there a
> way to do this using notmuch (as it is already identifying duplicates),
> or do you recommend another tool (maybe a file deduplication tool)?

copy all messages to a directory, where each message filename is
sha256sum of the file contents, then remove the originals

notmuch does not seem to care much about the message filenames,
except reindex might take a long time
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