Free PST Viewer for Windows

MailRelic opens Outlook PST files on Windows and shows their folders, messages, attachments, contacts, calendar items, tasks and notes. Outlook does not need to be installed, and the PST file is opened read-only.

Viewing and searching are free, with no limit on how many messages you open or search. Exporting many messages at once is part of MailRelic Personal.

Free to view and search · Windows 10/11

What you see when a PST is open

  • The archive's folder tree, with the same folder names as in Outlook.
  • A list of the items in each folder.
  • The selected message: sender, recipients, sent and received dates, and the HTML or plain-text body. Images that would load from the internet are blocked.
  • Attachments listed under each message. Attached emails can be opened in place.
  • Contacts, calendar items, tasks and notes, when the archive contains them.
  • Archive information: file size, folder count, item count and attachment count.
MailRelic showing an open email about a revised construction schedule, with its sender, recipients, sent date, message text, and a PDF attachment with a Save button.

Search every folder

Search covers the whole archive. Plain words search the text of messages, and filters narrow the results:

from:Sender name or address
to: cc: bcc:Recipients
subject:Words in the subject
folder:Only messages in a folder
after: before:A date, written as YYYY-MM-DD
has:attachmentOnly messages with attachments

Quote values that contain spaces, for example subject:"annual report".

Saving messages and attachments

The free download saves any single message as an .eml file and any attachment as a file, as often as you need. MailRelic Personal ($39 one-time) adds exports of many messages at once: to EML, to MBOX, and all attachments from a folder or the whole archive.

Which PST files are supported

MailRelic opens Unicode PST files, the format Outlook 2003 and later versions create. It does not open ANSI PST files from Outlook 97 to 2002 or OST files, and it does not repair damaged PST files; it reports the problem and leaves the file as it is.

Related: opening PST files without Outlook and opening large PST files.