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What is PUB?

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

What is EML?

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

When Should You Use PUB vs EML?

Use PUB When...

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

Use EML When...

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

PUB vs EML: Key Differences

  • •PUB uses lossy compression while EML uses lossless compression — this is the fundamental technical difference between the two formats.
  • •Converting from PUB to EML changes compression type: lossless source becomes larger but with full quality preservation.
  • •Transparency: N/A
  • •File sizes: PUB files typically range 500KB to 50MB with images and EML files Small for plain text, larger with attachments.
  • •PUB is optimized for desktop publishing, flyers, newsletters while EML is designed for email export, message archiving, mail migration — choose based on your specific workflow needs

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.

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.

Common Use Cases for PUB to EML 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 PUB to EML Conversion

  • →Before converting PUB to EML, review the document structure — multi-column layouts, text boxes, and floating images behave differently across formats
  • →Export a PDF preview alongside the EML file so you have a reference of how the document should look
  • →Check that hyperlinks and cross-references survived the PUB to EML 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 PUB to EML Conversion

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

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Convert PUB to EML Online - Free & Fast

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

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About PUB and EML

PUB

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

EML

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

Format Comparison

CompressionLossy → Lossless
TransparencySupported
Use CaseConvert from desktop publishing, flyers, newsletters to email export, message archiving, mail migration
File Size~Small for plain text, larger with attachments after conversion

FAQs

Is converting PUB to EML free?

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

How long does it take to convert PUB to EML?

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

What is EML best used for?

EML is ideal for email export, message archiving, mail migration. Email Message, RFC 822 standard email file format

Does converting PUB to EML lose quality?

No, converting PUB to EML does not cause additional quality loss — EML uses lossless compression. However, any artifacts already present in the original PUB file will persist in the EML output.

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

EML files are typically 2-5x larger than equivalent PUB files because EML preserves all pixel data. This is expected and necessary for lossless quality.

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