Source
Migration, open standards & exit — found from sitemap — Proton for Business
Checked for Proton for Business on 5 Nov 2026
- Page
- https://proton.me/support/import-export-mbox-eml-using-proton-mail-bridge
- Checked
- 5 Nov 2026, 14:03 UTC
- How we may use it
- Public page, crawling permitted
Technical details
- type
- page
- http status
- 200
- content hash
- sha256:e8c7d15a5e5be72d00f114dd5b326f99aafa8fd43f29f1234df077a512b49f82
- permission
- robots_ok
- screenshot
- Screenshot on file (internal exhibit, not published)
Cited by
Facts read from this source
-
Mbox eml export support Report an error
“EML and MBOX files are the industry standard of file extensions — supported by many email clients and providers.”
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Import export tool addon Report an error
“using the extension ImportExportTools NG (new window) , which can be downloaded from within Thunderbird”
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Eml import methods Report an error
“you can import them using one of two methods: Drag-and-drop the files into a folder in Thunderbird User ImportExportTools NG to import the EMLs”
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Folder hierarchy limit Report an error
“Note: folders can only be created under “Folders”, and only up to 3 levels of folders can be created in a hierarchy.”
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Mbox import via local folder Report an error
“MBOX files cannot be directly imported into your Proton Mail account, so you will need to import them to a local folder first.”
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Import batch recommendation Report an error
“we recommend doing the import in batches — such as 100 to 500 per batch — to avoid any issues.”
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Rfc invalid message import errors Report an error
“Email messages need to abide by RFC standards. That’s why some emails cannot be imported — they are invalid per RFC standards.”
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Failed imports recovery folder Report an error
“Messages that failed to import will also show in the Recovered Messages Folder.”
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Eml native export Report an error
“Thunderbird has a native feature to allow exporting in EML file format.”
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Selective export by filter Report an error
“Thunderbird also gives you the option to perform a selective export — exporting messages between certain dates or based on other conditions, for example.”
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Search folder not synced Report an error
“This folder will not be synchronized to your Proton Mail account.”
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Export tool backup restore Report an error
“our Proton Export Tool ensures that you can always restore the backup to Proton Mail and have the same configuration as when you backed it up.”
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Easy switch import Report an error
“When importing messages from your previous provider, we recommend using Easy Switch — if your provider is supported, or you have an option to connect using IMAP.”
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Entity address Report an error
“Proton AG Route de la Galaise 32 1228 Plan-les-Ouates Geneva, Switzerland”
1 fact read from this page is not shown because it could not be confirmed on the page as captured.
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