Walkthroughs for the mail stores, archives and documents that ordinary software refuses. Written by the people who build the tools.
Showing 1 to 6 of 6 articles.
Two questions sort all of them. One message or a whole mailbox. Published structure or private. Everything else about portability follows from those two answers.
Every value sits in its own stream named __substg1.0_0037001F or similar. Nothing in the file says which of those is the subject line.
The format has no version and no variants. Everything awkward about EML comes from the folder around it rather than from anything inside the file.
The file copies perfectly. Outlook on the other machine is what refuses it, over one record written inside the file.
Rules, views, categories and search folders all live in there beside the mail. None of them survive a move to any other format.
Plain text, no index and no specification for its first thirty years. That history explains the four variants, the size on disk and why Outlook will not touch it.
Every tool runs inside the browser tab, so a file is read where it already sits and nothing is sent to a server.