Quick answer: Install an Outlook converter on Windows, open your PST or OST file so the folder tree loads, choose an output format such as PDF, MBOX, EML, or CSV, tick the folders you want, set a destination, and start the conversion. When it finishes, open the destination folder to find your converted files ready to share or archive.

How Do You Convert Outlook to Other Formats?

Export your PST, OST, and MSG files to universal formats for migration, archiving, and compatibility

PST
OST
MSG
Convert
📬
MBOX
.mbox

Standard mailbox format used by Thunderbird, Apple Mail, Gmail, and many other email clients.

Best for:
Migration to Thunderbird, Apple Mail, Gmail import, cross-platform email client compatibility, Unix-based email systems
📄
EML
.eml

Universal email format that preserves individual messages with headers, attachments, and formatting.

Best for:
Individual email export, email forensics, sharing specific messages, universal email client compatibility
📑
PDF
.pdf

Portable document format ideal for archiving, printing, and creating tamper-proof email records.

Best for:
Legal documentation, business correspondence archiving, court evidence, read-only email preservation
🌐
HTML
.html

Web-friendly format that allows viewing emails in any browser with preserved formatting.

Best for:
Web-based viewing, email previews, browser compatibility, web archiving systems
📝
TXT / RTF
.txt .rtf

Plain text and rich text formats for simple, universal text-based email content extraction.

Best for:
Text analysis, content extraction, legacy system compatibility, minimal file size requirements
📊
CSV
.csv

Spreadsheet format perfect for exporting contacts, calendar events, and email metadata.

Best for:
Contact list management, calendar data analysis, email metadata extraction, database imports
👤
vCard
.vcf

Standard contact format compatible with all major contact management systems and devices.

Best for:
Contact migration, phone synchronization, CRM system imports, address book transfers
📅
iCalendar
.ics

Universal calendar format for exporting events, meetings, and appointments across platforms.

Best for:
Calendar migration, Google Calendar import, Apple Calendar sync, meeting sharing
⚙️
Other Formats
Various

Additional specialized formats including XML, JSON, EMLX, Zimbra TGZ, and Thunderbird profiles.

Best for:
API integrations, custom applications, specific email client migrations, enterprise systems

How Do You Import Files Into Outlook?

Import data from various sources into Outlook PST format for centralized email management

MBOX
EML
CSV
vCard
iCalendar
Import
📬
MBOX to PST
.mbox → .pst

Migrate complete mailboxes from Thunderbird, Apple Mail, Gmail, and other MBOX-compatible clients to Outlook.

Import scenarios:
Thunderbird migration, Gmail takeout data, Apple Mail transition, Unix email system migration
📄
EML to PST
.eml → .pst

Import individual email messages from universal EML format, maintaining all metadata and attachments.

Import scenarios:
Forensic email recovery, archived message restoration, selective email import, cross-platform email transfer
📊
CSV to Contacts
.csv → contacts

Import contact lists and address books from spreadsheets and databases into Outlook contacts.

Import scenarios:
CRM data import, Excel contact lists, database exports, bulk contact creation
👤
vCard to Contacts
.vcf → contacts

Import contact cards from phones, other email clients, and contact management systems.

Import scenarios:
Phone contact sync, business card imports, contact sharing, address book merging
📅
iCalendar to Calendar
.ics → calendar

Import calendar events, meetings, and appointments from other calendar applications.

Import scenarios:
Google Calendar migration, Apple Calendar import, meeting invitations, event sharing

Conversion Capabilities

15+
Output Formats
5+
Input Sources
100%
Data Integrity
File Size Support

Related guides

Need to turn a mailbox into archived documents fast? Convert Outlook email to PDF with a dedicated desktop tool.