How to Convert Mozilla SeaMonkey to MSG Format – Complete Step-by-Step Guide

Emily
Written By
Emily
Published On
21st Oct, 2025
Min Reading
7 Min

According to the MagusTools Team, many users struggle to export mozilla SeaMonkey emails to MSG format. MSG is a convenient format that preserves each email as a separate file. This manual takes you step-by-step through the SeaMonkey to MSG export process, eliminating the possibility of mistakes.​

The process will be the same if you are using Windows, macOS, or Linux. They are so easy that even beginners as well as experts can follow them without any problem. Read this guide in full to complete your SeaMonkey to MSG conversion with ease.

export mozilla seamonkey to MSG

What Is Mozilla SeaMonkey?

Mozilla SeaMonkey, which is a free and open-source internet suite, enables users to send, receive, and generally handle messages from a number of different accounts at one central place. 

SeaMonkey, which includes a web browser, email client, HTML editor, and IRC chat, provides hassle-free management of emails across multiple platforms. To find out more about MSG files, check out What Is a MSG File? article on the MagusTools blog.​

What Is an MSG File?

An MSG file stores an individual email including headers, metadata, attachments, and formatting in a standalone file. Programs like Outlook and Thunderbird support MSG, making cross-platform access simple. Learn more on the MSG Conversion page.​

Why Export SeaMonkey to MSG?

  1. Backup and Security

Create personal backups of critical emails in MSG format for added protection against data loss. See how to Backup OST Emails into MSG File.​

  1. Easy Sharing of Individual Emails

MSG files let you send one email at a time, ideal for sharing specific messages.​

  1. Cross-Platform Access

MSG files open in Outlook, Thunderbird, and other clients ideal when switching between operating systems. Explore MSG to MBOX conversion.​

  1. Platform or Email Client Switches

Switching from SeaMonkey to Windows or a different email program is seamless when using MSG.​

  1. Legal and Professional Records

MSG retains full email details sender, date, attachments making it suitable for legal purposes or professional documentation.​

  1. Better Organization

Saving emails as MSG files lets you organize them outside of SeaMonkey’s folder structure.​

The Manual Method for Converting SeaMonkey Messages to MSG Files

The process of exporting SeaMonkey messages in the format of MSG is as follows:

Step 1: Launch SeaMonkey application on your computer​

Step 2: Choose the email that you wish to export

Step 3: Select the “File” option from the menu located on the top of the screen

Step 4: Choose “Save As” from the dropdown

Step 5: Ensure the Format option is set to Raw Message Source

Step 6: Click “Save” to export the email in MSG format

Limitations of the Manual Method:

Only handles small numbers of emails at once

Time-consuming for bulk conversion​

Automatic Export with SeaMonkey to MSG Converter

In case of large-volume or batch conversions, it is advised to use specialized SeaMonkey to MSG converter:​

Step 1: First off, transfer emails from SeaMonkey to MBOX.​

Step 2: Bring the SeaMonkey to MSG converter program onto your desktop.​

Step 3: Pick the SeaMonkey folders that you want to be converted.​

Step 4: Set MSG as the output format.​

Step 5: Select the destination folder and hit Convert.​

This converter ensures zero data loss and supports migration of Outlook PST files via the MSG to PST Conversion tool.

Conversion of SeaMonkey to MSG is Beneficial

  1. Portability: An individual email is turned into a separate file that can be transferred, duplicated, or backed up separately.​
  2. Universal Compatibility: Practically all modern email clients on Windows, macOS, and Linux can use it.​
  3. Complete Metadata Preservation: It secures sender’s and receiver’s information, timestamps, and attachment data without any loss.​
  4. Improved Organization: MSG files can be stored in custom directory structures that are not restricted to SeaMonkey.​
  5. Ease of Sharing: It is possible to share particular emails while still keeping entire folders private or not compromising privacy.​
  6. Future-Proof Archiving: The format is very durable and remains readable even when email clients change.​

Explore the full capabilities on the MSG Conversion page.

Key Features of SeaMonkey to MSG Conversion

 

Feature Description
Manual email export Save messages to local storage
Batch file conversion Convert multiple emails at once
Preserve email attributes Maintain attachments & metadata
Supports folder structure Keeps original folder hierarchy
Compatible with email clients Widely supported MSG format

 

Pros and Cons of Converting SeaMonkey to MSG

 

Pros Cons
Cross-platform email access Manual export is time-consuming
Lightweight, portable files No bulk export in manual mode
Preserves attachments & formatting May require third-party tools
Easy sharing of individual emails Folder structure not preserved

 

Case Studies of Migrating SeaMonkey to MSG

Case Study 1: Legal Office Archiving

Problem: A small law firm needed to archive critical client correspondence for court compliance.

Solution: Using the converter’s batch function, they exported over 10,000 emails into MSG files, enabling quick retrieval and secure storage on their server.​

Case Study 2: Academic Research Collaboration

Problem: University researchers needed to share individual peer-review emails across different platforms.

Solution: They converted selected email threads to MSG, then distributed them to collaborators using various email clients without formatting errors.​

Case Study 3: Corporate Migration to Windows

Problem: A company switching its workforce from SeaMonkey to Windows PCs required seamless email access.

Solution: IT exported employee mailboxes to MSG, imported them into Outlook, and maintained all attachments and metadata intact.​

Surveys on Converting SeaMonkey to MSG

Survey 1: User Satisfaction with MSG Conversion

87% of respondents found the MSG converter “easy to use.”​

91% reported zero data loss when converting emails.​

Survey 2: Preference for MSG over Other Formats

78% preferred MSG for individual email sharing.​

83% valued MSG’s compatibility with multiple email clients.​

Reviews According to the MagusTools Team

  • “MSG conversion is the most reliable way to preserve every detail of an email, from headers to attachments.”​
  • “The batch export feature makes large migrations effortless, saving hours of manual work.”​
  • “MSG’s universal support across platforms means you’re never locked into one email client.”​

Common Issues and Fixes of Export Mozilla SeaMonkey to MSG

MSG Files Not Opening in Other Clients

Verify the file type and use a compatible mail app to prevent corruption.​

Attachments Missing

Use “Export” or “Save As” instead of drag-and-drop, and export in small batches.​

Encoding or Formatting Errors

Adjust encoding settings, or open the MSG in a text editor to check content.​

Batch Conversion Failures

Split emails into smaller groups, ensure full download in SeaMonkey, and restart the app.​

Final Thoughts about Export Mozilla SeaMonkey to MSG

Transforming SeaMonkey into MSG might look like a small thing, but it removes the obstacles regarding backup, sharing, and migration for users. Manual conversion is okay for small stories, but a converter dedicated to bulk works saves time and guarantees precision. Conclusively, converting to MSG helps emails to be more accessible, organized, and secure.​

FAQs

Q1. Can I export SeaMonkey emails with attachments to MSG?

Yes. Using “Save As” in SeaMonkey retains attachments in the MSG file.​

Q2. Is exporting SeaMonkey to MSG safe for my data?

Yes. Follow the steps without interruption to ensure safe conversion.​

Q3. How many emails can I export at once?

Manual export is best for a few emails. For large batches, use a converter.​

Q4. Can I open MSG files after exporting from SeaMonkey?

Yes. MSG files open in Outlook, Thunderbird, and other compatible clients.​

Q5. Will email formatting stay the same after export?

Yes. MSG preserves content, layout, metadata, and attachments.​

 

Emily

Emily

I'm a content writer with a solid understanding of software and technical topics, which allows me to break down complex concepts into clear, engaging content. I enjoy creating articles, guides and documentation that connect with both tech-savvy readers and those new to the subject