From Gmail
- Hover over the attachment and click the download arrow. Gmail shows "No preview available", which is normal.
- Open asiceviewer.com in a new tab.
- Drag the file from the downloads bar at the bottom of the browser onto the page.
From Outlook
In Outlook on the web, click the arrow next to the attachment and choose Download. In the desktop program you can drag the attachment from the message directly onto the browser tab without saving it first.
From a phone's mail app
- Android: tap the attachment to download it, then open asiceviewer.com in Chrome, tap the box and pick the file from Downloads. With the ASiC-E Viewer app installed, tapping the attachment offers to open it directly.
- iPhone: touch and hold the attachment, choose Save to Files, then open the site in Safari and pick the file.
Common attachment problems
| What you see | Why | What to do |
|---|---|---|
Attachment named contract.zip | The mail server renamed the extension | Open it anyway; the viewer detects the container |
Attachment named contract.asice.txt | A filter added a harmless extension | Open it anyway |
| Attachment blocked or missing | The company filter removes unknown types | Ask the sender for a download link |
Two attachments, .asice and .pdf | The sender added a reading copy | The signed one is the .asice |
Replying with a signed file
If you need to sign the document yourself and send it back, an opener is not enough. Open the container in DigiDoc4, add your signature and attach the updated .asice to your reply. Both signatures then live in one file.
A note on trust
A signed container from an unknown sender deserves the same caution as any attachment. Opening it in a browser-based viewer is a safe way to look, because documents are displayed, not executed. HTML files inside a container are shown in a sandbox with scripts disabled. See open ASiC-E files online for the privacy side.
Frequently asked questions
Why can't Gmail preview an .asice attachment?
Gmail previews common formats only. A signed container is a specialised archive, so it has to be downloaded and opened with a viewer.
Is it safe to open a signed attachment from a stranger?
Viewing it in the browser is low-risk because nothing inside is executed. Be as careful with the documents' content and links as with any unexpected e-mail.