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What is EML?

EML is the standard email file format following RFC 822, used by most email clients for message storage and export.

What is PUB?

Microsoft Publisher (PUB) is a desktop publishing format used for creating professional layouts, newsletters, flyers, and marketing materials.

When Should You Use EML vs PUB?

Use EML When...

Reach for EML when your priority is email export, message archiving, mail migration — its uncompromising quality ensures every detail is preserved.

Use PUB When...

Reach for PUB when your priority is desktop publishing, flyers, newsletters — its efficient compression makes sharing fast and storage minimal.

EML vs PUB: Key Differences

  • •EML and PUB diverge on compression: lossless compression for the source, lossy compression for the target.
  • •Moving from EML (lossy) to PUB (lossy) means the output file will be significantly smaller — but at the cost of some visual fidelity.
  • •Alpha channel support: PUB lacks transparency support, so semi-transparent pixels from the source will be lost.
  • •EML files are typically Small for plain text, larger with attachments while PUB files range 500KB to 50MB with images
  • •EML is optimized for email export, message archiving, mail migration while PUB is designed for desktop publishing, flyers, newsletters — choose based on your specific workflow needs

Advantages of EML

  • ✓The lossless nature of EML means file sizes stay reasonable while handling Email export, message archiving, mail migration efficiently.
  • ✓From mobile devices to enterprise servers, EML is recognized and supported everywhere.
  • ✓The trade-off for EML's perfection is larger files — but for archival work, it is worth every megabyte.
  • ✓EML is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Advantages of PUB

  • ✓The lossy nature of PUB means file sizes stay reasonable while handling Desktop publishing, flyers, newsletters efficiently.
  • ✓From mobile devices to enterprise servers, PUB is recognized and supported everywhere.
  • ✓Storage and bandwidth costs drop significantly when using PUB thanks to its efficient compression.
  • ✓PUB is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for EML to PUB Conversion

  • Onboarding materials
  • Policy and procedure manuals
  • Grant applications
  • Case studies and whitepapers
  • Professional reports and proposals
  • Academic papers and theses

Industry Applications

Supply Chain ManagementInsuranceReal EstateRegulatory ComplianceBusiness AdministrationAcademic Publishing

Best Practices for EML to PUB Conversion

  • →Before converting EML to PUB, review the document structure — multi-column layouts, text boxes, and floating images behave differently across formats
  • →Export a PDF preview alongside the PUB file so you have a reference of how the document should look
  • →Check that hyperlinks and cross-references survived the EML to PUB conversion — some formats handle links differently
  • →Run a spell check before conversion to avoid propagating errors into the final document
  • →Keep the original editable file in case the conversion introduces layout shifts
  • →Test the output on at least two different applications or devices

Troubleshooting EML to PUB Conversion

  • !EML to PUB formatting looks off → complex layouts with tables and columns may shift between formats
  • !Fonts render differently in PUB → embed fonts or use standard web-safe fonts before converting
  • !Images missing from the PUB output → ensure images are embedded in EML, not linked externally
  • !Tracked changes disappeared after converting EML to PUB → some document formats don't support revision tracking

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Convert EML to PUB Online - Free & Fast

Convert EML files to PUB online for free. High-quality conversion with no registration required.

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About EML and PUB

EML

EML (EML emails) - Email Message, RFC 822 standard email file format. Best for email export, message archiving, mail migration.

PUB

PUB (Publisher PUB) - Microsoft Publisher, desktop publishing format. Ideal for desktop publishing, flyers, newsletters.

Format Comparison

CompressionLossless → Lossy
TransparencyN/A
Use CaseConvert from email export, message archiving, mail migration to desktop publishing, flyers, newsletters
File Size~500KB to 50MB with images after conversion

FAQs

Is converting EML to PUB free?

Yes, GoConvertFile offers free conversion of EML to PUB for files up to 100MB. No registration required.

How long does it take to convert EML to PUB?

Most EML to PUB conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is PUB best used for?

PUB is ideal for desktop publishing, flyers, newsletters. Microsoft Publisher, desktop publishing format

Does converting EML to PUB lose quality?

Yes, converting EML to PUB uses lossy compression, which reduces file size by discarding some visual data. Set quality to 85-95% for a good balance of quality and file size.

What file size should I expect after converting EML to PUB?

PUB files are typically 50-80% smaller than EML files because PUB uses efficient lossy compression. The exact reduction depends on quality settings.

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