Cycling through all six. Tap any point to stop.

Measured on six things

Convert .eml, .msg and .mbox emails to PDF in your browser

Growth

Real, narrow pain (bulk email-to-PDF for cases and records) with concrete wedges — Bates numbering, merged sorted PDFs, no-upload processing — that Outlook and Thunderbird can't match. Legal vertical is a specific payer. Very early (domain ~0.1 years).

Screenshots

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EML to PDF

About this app

EML to PDF opens .eml and Outlook .msg email files, whole folders, ZIP files and .mbox archives in your browser and saves the emails as PDFs with selectable text. Each email is shown with its From, To, Cc, Date and Subject headers, the message body and its attachments; images from the internet are off by default, so senders can't tell you opened the email, and one click loads them. Everything runs on your device, so the emails are never uploaded. Converting each email to its own PDF is free, with no sign-up and no limit on the number of emails. Paid plans add bulk export: a ZIP of all PDFs, one merged PDF sorted by date with a contents page and page numbers, and a ZIP of all attachments. The Case Pass is a one-time $29.90 payment for 90 days, with no renewal; Pro is $14.90 a month or $99 a year; Legal is $24.90 a month or $199 a year and adds Bates numbering of emails with their attachments in one step.

Key features

1Opens .eml, .msg, .mbox, folders and ZIP archives entirely in the browser — emails never uploaded.
2Free single-email-to-PDF with no sign-up and no limit; selectable text, A4/US Letter, CJK/Greek/Russian support.
3Paid bulk export: ZIP of PDFs, one merged date-sorted PDF with contents page and page numbers, attachment ZIP.
4Legal plan adds one-step Bates numbering of emails with attachments, plus CSV number list.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

People who saved emails as .eml or .msg

Pain points

No mail app to open the file

Primary needs

Read the email and keep it as a PDF

Demographic

Paralegals and office staff

Pain points

Need many emails as PDFs for a case or record

Primary needs

One sorted, page-numbered PDF of a whole folder

Demographic

People leaving an old mailbox

Pain points

An .mbox archive they can't open

Primary needs

Turn the archive into PDFs they can keep

Scout Review

Written by AI from measured evidence, scored out of 100.

EML to PDF is a focused browser-based converter for .eml, .msg, .mbox and ZIP email archives. Free single-email-to-PDF with no sign-up and no limit; paid plans ($29.90 Case Pass, $14.90/mo Pro, $24.90/mo Legal) add bulk ZIP export, merged sorted PDFs with contents pages, attachment ZIPs, and Bates numbering. The site is fast (Lighthouse 100/100), well-designed with an editorial voice, and unusually transparent about its privacy model — it tells you to verify the no-upload claim in DevTools. Weak spots: no published compliance certifications for a legal-facing product, one contrast failure, no WCAG statement, and a lot of prose explaining free vs paid.

Measure by measure

Usability

Upload CTA under the hero, a 'Try sample emails' link, and no sign-up for free single-email conversion make first value fast. Paid unlock via emailed code works but the repeated free/paid notices add reading load to a tool page.

Design

Editorial serif/sans pairing, real PDF mockups in the hero, and a restrained single-accent palette give this a distinct voice well above typical utility-tool templates. The in-app screenshot's competing reds and the dense 'Check for Yourself' prose hold it back.

Speed

Lighthouse 100/100 on both mobile and desktop, LCP 1.2s, CLS 0, TBT 46ms. Conversion runs client-side so there's no server round-trip. Hard to fault a static page that scores perfect on both profiles.

Security

11/12 security headers including HSTS, CSP and DMARC; the no-upload claim is architectural and user-verifiable via the Network panel. No SOC 2, ISO or bug-bounty program published, which caps it below the top of the band.

Accessibility

Lighthouse accessibility 97/100 with one failing audit: insufficient color contrast. Responsive layout and readable typography, but no WCAG statement or accessibility page, and the UI itself isn't localized.

Growth

Improvement areas

No published security/compliance page (SOC 2, pen test, bug bounty) despite targeting law firms.
One Lighthouse contrast failure and no WCAG accessibility statement.
Permissions-Policy header missing (11/12 security checklist).
Free-vs-paid boundaries restated across multiple sections, adding reading load.

Design & Usability

The site has a real point of view: serif display headings, monospace code samples, and a hero that shows actual PDF output instead of an abstract illustration. The single crimson upload button makes the primary action obvious, and the '01'/'02' section numerals tie the page together. Usability is solid where it counts — the CTA sits under the hero, 'Try sample emails' lets you test without a file, and free single-email conversion needs no sign-up. The friction is reading load: free-vs-paid boundaries are restated in the feature cards, the notice band, and a whole 'Who Needs the Paid Plans' section, which is a lot of prose for a tool page. The in-app screenshot also has competing reds that flatten the action hierarchy.

Speed & Security

Speed is the standout: Lighthouse 100/100 on mobile and desktop, LCP 1.2s, CLS 0, TBT 46ms, and conversion runs entirely client-side so there's no server round-trip. Security is strong on the fundamentals — HTTPS enforced, HSTS, CSP, frame protection, DMARC, and 11/12 header checklist points (Permissions-Policy is the gap). The privacy claim is the interesting part: emails are read in the browser and never uploaded, and the site tells you to verify it yourself in the Network panel. What's missing is the compliance layer — no SOC 2, ISO, pen-test summary or bug bounty published, which matters if law firms are the target buyer.

Accessibility & Growth

Accessibility scores 97/100 in Lighthouse with a single failing audit for insufficient color contrast — an easy fix. The layout is responsive with comfortable typography, but there's no WCAG statement or accessibility page, and the UI isn't localized even though the PDF engine handles CJK, Greek and Russian. Growth is a judgment on the idea: the problem is real and specific (paralegals and office staff who need many emails as sorted, numbered PDFs), and the wedges are concrete — bulk ZIP export, merged date-sorted PDFs with a contents page, one-step Bates numbering, and no-upload processing. Outlook and Thunderbird print one email at a time. The legal vertical is a clear payer. The limit is reach: it's a narrow utility, very early (domain ~0.1 years), with no network effects.

Conclusion

If you have a folder of .eml files, an .mbox archive you can't open, or a case that needs 300 emails as one numbered PDF, this is a genuinely well-built tool at a fair price — and the free tier is real, not a teaser. The gap is trust infrastructure for the legal buyer: publish a security page, a pen-test summary or SOC 2 roadmap, and a WCAG statement, and the Legal plan becomes an easy sell. As it stands, it's a strong indie utility that punches above its weight on speed and design and is still building the compliance story its best customers will ask for.

Suggestions for improvement

Publish a security/compliance page: pen-test summary, SOC 2 roadmap, and data-handling details for the Legal plan buyers.
Fix the single Lighthouse contrast failure and add a short WCAG 2.1 AA accessibility statement.
Add Permissions-Policy to the header set to complete the 12/12 checklist.
Tighten the free-vs-paid explanation into one comparison table instead of repeating it across three sections.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	EML to PDF	Microsoft Outlook	Mozilla Thunderbird
Bulk conversion of many emails at once	Yes — whole folders, ZIPs and .mbox archives in one pass	No — one email at a time via print to PDF	No — one email at a time via print to PDF
Merged PDF sorted by date with contents page and page numbers	Yes (paid plans)	No	No
Bates numbering of emails with attachments	Yes — one step, on Legal plan	No	No
Opens .eml and .mbox without installing a mail app	Yes — in the browser, nothing to install	Partial — .msg only, requires Outlook install	Yes — but requires installing Thunderbird
Files never uploaded (client-side processing)	Yes — verifiable in browser Network panel	Local app, but cloud sync in Microsoft 365	Local app; no upload for local accounts
Price for bulk email-to-PDF	Free single; $29.90 Case Pass / $14.90/mo Pro / $24.90/mo Legal	Requires Microsoft 365 subscription; no bulk feature	Free; no bulk feature