Setting up the staging area (The Org Manual)

16.17.1 Setting up the staging area

The mobile application needs access to a file directory on a server¹⁵¹ to interact with Emacs. Pass its location through the org-mobile-directory variable. If you can mount that directory locally just set the variable to point to that directory:

(setq org-mobile-directory "~/orgmobile/")

Alternatively, by using TRAMP (see (tramp)TRAMP User Manual), org-mobile-directory may point to a remote directory accessible through, for example, SSH, SCP, or DAVS:

(setq org-mobile-directory "/davs:user@remote.host:/org/webdav/")

With a public server, consider encrypting the files. Org also requires OpenSSL installed on the local computer. To turn on encryption, set the same password in the mobile application and in Emacs. Set the password in the variable org-mobile-use-encryption¹⁵². Note that even after the mobile application encrypts the file contents, the file name remains visible on the file systems of the local computer, the server, and the mobile device.

Footnotes

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For a server to host files, consider using a WebDAV server, such as Nextcloud. Additional help is at this FAQ entry.

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If Emacs is configured for safe storing of passwords, then configure the variable org-mobile-encryption-password; please read the docstring of that variable.