OpenNestEML to GZ Converter
Convert Email Message to GZIP Archive directly in your browser. Your files never leave your device — no uploads, no account, no tracking.
Choose files
or drag & drop here
100% local — your file never leaves this device.
How to convert EML to GZ
Choose your EML file
Select a Email Message from your device — click or drag & drop.
Pick GZ as the output
We auto-detect your file and show GZ as a recommended target.
Convert & download
Everything runs locally in your browser, then you download the result instantly.
Why use OpenNest to convert EML to GZ?
100% local
Your EML file is converted entirely in your browser — nothing is uploaded.
Free & no account
No signup, no limits. Convert as many files as you need, on any device.
Private by design
No servers, no tracking, no logs. Close the tab and every trace is gone.
Supported input & output
| Input — Email Message | .eml · message/rfc822 |
|---|---|
| Output — GZIP Archive | .gz · application/gzip |
FAQ — EML to GZ
Is EML to GZ conversion free?
Yes — completely free, no account, no signup, and no file limits.
Do I need to upload my EML file?
No. The conversion runs entirely in your browser; your file never leaves your device.
How do I convert EML to GZ?
Select your EML file, choose GZ as the target, and click Convert. The result downloads instantly.
Is the output quality preserved?
Conversion is done locally with high-quality output, preserved to the extent the target format allows.