Convert Thunderbird to Text — Export Emails as Plain Text (TXT) Files

Need a lightweight copy of your Thunderbird emails without HTML formatting, embedded images, or proprietary file structures? Total Thunderbird Converter exports your Thunderbird mailbox to plain text files — compact, searchable, and readable on any operating system. The converter:

• Saves each email as a separate .txt file or merges all messages into one file
• Lets you choose which fields to include: sender, date, subject, body, CC, BCC
• Processes entire folders in batch — thousands of emails in one session
• Names output files by date, sender, or subject for easy sorting
• Includes a 30-day free trial with no limitations

Download Total Thunderbird Converter and start exporting your emails to plain text today.

 

MBOX vs Plain Text: What Is the Difference?

MBOX is Thunderbird's storage format. It packs multiple emails into a single binary file, complete with MIME headers, HTML bodies, Base64-encoded attachments, and transport metadata. An MBOX file is designed for email clients, not for human reading. Opening one in Notepad gives you a wall of encoded data mixed with message boundaries.

Plain text (TXT) is the simplest document format. A .txt file contains only human-readable characters — no markup, no formatting, no binary data. Text files open instantly in Notepad, VS Code, terminal editors, or any text viewer on Windows, macOS, and Linux.

Converting Thunderbird to text strips away HTML tags, MIME encoding, and email transport headers, leaving you with clean message content: who sent it, when, the subject line, and the body. The result is compact, universally readable, and easy to search with standard tools like grep or Windows Search.

How to Convert Thunderbird to Text

• Step 1. Launch Total Thunderbird Converter. The program detects your Thunderbird profile and displays all mail folders in a tree view.
• Step 2. Select the folders you want to export. Use Check All to process the entire mailbox, or pick specific folders.
• Step 3. Click the TXT button in the format toolbar at the top of the window.
• Step 4. Choose a destination folder for the output text files.
• Step 5. Configure the output: select which email fields to include (sender, date, subject, body, CC, BCC), set the file-naming template, and decide whether to save each email as a separate file or merge all into one.
• Step 6. Press Start. The converter extracts the text content from each email and saves it to the destination folder.

The output files contain clean, readable text. Attachments are saved separately to the same or a different folder — they are not embedded in the text output.

Command-Line Conversion

Total Thunderbird Converter includes a command-line interface for automated text exports. Example:

ThunderbirdConverter.exe -sTXT "C:\Users\John\AppData\Roaming\Thunderbird\Profiles\abc123.default\Mail\Local Folders\Inbox" C:\Output\TXT\

Combine this with Windows Task Scheduler to run nightly exports or process multiple Thunderbird profiles in a .bat script.

Why Use Total Thunderbird Converter?

Selective field export. Choose exactly which email fields appear in the output: sender, recipient, date, subject, body, CC, BCC, or any combination. Skip unnecessary headers to keep the text clean and focused.

Merge or split. Save each email as a separate .txt file for individual access, or merge an entire folder into one long text file — useful for full-text search across thousands of messages.

Customizable file naming. Name output files using date, sender, subject, or message index. A template like [Date]-[Subject].txt produces filenames that sort chronologically and are easy to find.

Batch processing. Export thousands of emails in one session. The converter handles large Thunderbird mailboxes without running out of memory.

Attachment handling. Attachments are saved to a separate folder alongside the text output. Documents, images, and archives remain intact and accessible.

Multiple output formats. Besides TXT, export Thunderbird emails to PDF, DOC, HTML, TIFF, EML, or PST from the same tool.

Online Tools vs Total Thunderbird Converter

Feature	Manual Copy-Paste	Total Thunderbird Converter
Batch export	One email at a time	Entire folders at once
Field selection	Copy everything or nothing	Choose specific fields
File naming	Manual	Automatic template
Merge option	Manual concatenation	Built-in merge to one file
Speed (10,000 emails)	Days of copy-paste	Under 5 minutes
Automation	Not possible	Command-line support
Pricing	Free but impractical	One-time $49.90

Windows 7/8/10/11 • 30-day free trial

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Total Thunderbird Converter Customer Reviews 2026

Rate ItRated 4.7/5 based on customer reviews

"I export thousands of Thunderbird emails to text for keyword analysis in Python. The selective field export is exactly what I needed — I include only the subject and body, skip the headers. A 4 GB mailbox converts to text in under 10 minutes."

Elena Sorokina Research Analyst

"Our audit trail requires email records in a non-proprietary format. Text files meet the requirement perfectly. The merge option lets me produce one file per quarter for the archive. Dates and sender info are preserved in every entry."

James Whitfield Compliance Officer

"Switched from Thunderbird to a web-based client and needed a searchable copy of five years of email. Converting to text made the archive compact and easy to browse in any text editor. Wish there was an option to filter by date range before export."

Patricia Gomez Office Manager

Thunderbird to Text Conversion: FAQ ▼