MessageViewer Online by Encryptomatic

Name: MessageViewer Online by Encryptomatic
Rating: 2.19 (63 reviews)
Author: encryptomatic

View e-mail messages in EML, MSG and winmail.dat formats, access e-mail file attachments

As of May 2026, MessageViewer Online by Encryptomatic has 7,000 users and a 2.19/5 rating from 63 reviews.

encryptomatic

Chrome Web Store ↗.crx

Users−12.5%

7.0K

7,000

Rating0%

2.19

63 reviews

Reviews0%

Version

1.0.0.2581

Manifest V2

90-day change · In the last 90 days this extension lost 1.0K users.

History

1 snapshots

Tracking since Apr 30, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 30, 2026	8.0K	2.19	63	1.0.0.2581
Now	7.0K	2.19	63	1.0.0.2581

Permissions & access

Permissions: None declared
Host access: None declared

Screenshots

MessageViewer Online by Encryptomatic screenshot 1

About

MessageViewer Online lets you open email messages stored as .msg, .eml or winmail.dat files.  Your message will be displayed fully formatted, and you can download any email file attachments. 

Your email messages are automatically erased when your session ends, and no information is collected or retained.

.MSG files are individual email messages created by Microsoft Outlook. MessageViewer Online also supports viewing of email messages stored as .eml files, an open format used by Windows Mail, Outlook Express and other email clients including Thunderbird.

Encryptomatic LLC was established in 2005. Our email viewers have been downloaded millions of times and are used by large companies, governments and individuals around the world. This project is a demonstration of our MVCOM component for parsing email content.  An offline version of this software is available for Windows users at http://www.encryptomatic.com/msgviewer/

We hope you will find this free app to be useful. Please feel free to contact us through our support website with any questions or comments about how we can improve MessageViewer Online for Chrome users.