since 2000
Opening a SEMA File
The SEMA file type is primarily associated with Secured eMail.
What is a SEMA file?
SEMA files mostly belong to Secured eMail by Secured eMail AB. Sema derives its name from "Secured EMail Archive". The subtype "sema" is meant to be a extension to the world of secured E-mail communication, and act as a archive container for encrypted data in general. It is an encrypted binary package that can be locked with multiple keys - both symetric and PKI style.
How do you open SEMA files?
You need a suitable software like Secured eMail to open a SEMA file. You need a suitable software like Secured eMail from Secured eMail AB. to open a SEMA file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SEMA file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SEMA file directly in the browser:. Just drag the file onto this browser window and drop it.
Online SEMA Text Viewer
or drag and drop it here
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What to Do When a .SEMA File Fails to Open
Because .SEMA files can originate from different programs, they aren't universally openable.
- Identify the Source: If received from a secure corporate workflow or encrypted email exchange, it is likely an Archive Container for Encrypted Data by Secured eMail AB.
- Check the Header: Open the file in a text editor or hex viewer to inspect its first bytes:
- "PK" indicates a ZIP-based archive.
- Scrambled characters suggest encrypted binary data.
- Readable XML indicates structured metadata.
- Use the Original Software: The original program is usually required; try Secured eMail, a compatible archive utility, or ask the sender if uncertain.
- Use this Webpage: Drag and drop your file into our viewer to detect its format, extract readable text, and preview when possible.
Technical Data for SEMA File Extension
File classification:
Archive
Mime type:
application/vnd.sema
a sema Archive Container for Encrypted Data is a special file format by Secured eMail AB. and should only be edited and saved with the appropriate software.
How to solve problems with SEMA files
- Associate the SEMA file extension with the correct application.
- Update your software that should actually open archive container for encrypted data files. Because only the current version supports the latest SEMA file format. Search, therefore, e.g. on the Secured eMail AB. manufacturer website after an available Secured eMail update.
- To make sure that your SEMA file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .SEMA file online - secure, fast, and no downloads needed.