In-depth guides on RPMSG encrypted emails, PUB file viewing, and other file format tools — from basics to advanced tips
A complete guide to the RPMSG file format — what it is, how Microsoft's Information Rights Management (IRM) encryption works, when you receive one, and how the OLE/CFB container structure works under the hood. The essential starting point for anyone dealing with RPMSG files.
Don't have Outlook? Here are 5 proven methods: Outlook Web App, OME Viewer (for Gmail users), Outlook Mobile, and more. With exact steps for each.
Since 2023, cybercriminals have weaponized RPMSG files — because the content is encrypted, email security scanners can't detect the malicious payload. Learn exactly how these attacks work.
Received a message.rpmsg in Gmail or on your phone? This guide walks through every scenario — Gmail web, Gmail app, iOS, and Android — with exact steps.
Quick reference: what's the difference between RPMSG, MSG, and EML email file formats? Comparison table, technical details, and how to open each one.
Outlook binary MSG versus universal MIME EML — compatibility, when each appears, and free ways to open both without Office.
How Office Message Encryption relates to message.rpmsg, why Gmail shows the attachment, and safe ways to open protected mail.
A complete guide to the PUB file format — what it is, how Microsoft Publisher creates them, the OLE/CFB container structure, and why you need a viewer with Publisher being retired in 2026.
Don't have Publisher? Here are 5 proven methods: PubViewer (free online), LibreOffice Draw, Google Drive, and more. With exact steps for each.
Microsoft is retiring Publisher in October 2026. Learn what this means for your .pub files, the exact timeline, and how to preserve your legacy Publisher documents.
Learn how to convert PUB files to PDF using free online tools, LibreOffice Draw, Google Drive, CloudConvert, and more. Step-by-step instructions for every method.
Online converter vs desktop editor — which free option wins for opening Microsoft Publisher files in 2026?
Microsoft Publisher is being retired. Here are the 10 best free alternatives — LibreOffice Draw, Canva, Scribus, Google Slides, and more. Comparison table included.
Need to convert a PUB file to Word format? 4 methods: LibreOffice Draw, PDF-to-Word two-step, Google Drive workaround, and CloudConvert.
Compare PubViewer, LibreOffice Draw, Google Drive, Zamzar, and CloudConvert. Features, pricing, rendering quality, and our recommendation.
View RPMSG encrypted emails or convert PUB files — both free, no signup required.