The M2PDF Alternative
M2PDF converts up to 100 Gmail emails to PDF on your device. ThreadPDF shares the on-device model but adds HTML and plain-text export, merged PDFs with a table of contents, and removes the batch cap.
Try ThreadPDF FreeWhy Look for an M2PDF Alternative
M2PDF is a clean, single-purpose Gmail-to-PDF extension built around fully-local conversion. Its constraints are deliberate: PDF-only output and a 100-email-per-batch cap. People look for an alternative when they need a different format (HTML or plain text), a merged single document, or larger batches.
ThreadPDF keeps the thing M2PDF gets right — on-device processing, attachments alongside, an in-Gmail UI — and widens the surface: PDF, HTML, and plain-text export, merged PDFs with a table of contents, and no fixed per-batch cap.
Because both tools process locally, this comparison is about format range, batch flexibility, and pricing transparency, not privacy.
Quick Verdict
M2PDF and ThreadPDF agree on the most important thing — converting on your device, not uploading your mail. ThreadPDF goes wider on output formats and doesn't cap batches at 100. M2PDF's narrow, PDF-only simplicity is a virtue if that's all you need.
Choose ThreadPDF if you need HTML or plain text, want merged output, plan to export more than 100 emails at once, or want published pricing. Stay with M2PDF if PDF-only and a 100-email batch are plenty.
Feature Comparison
| Feature | Switch Labs | M2PDF |
|---|---|---|
| Paid price We Win | $4.99/mo or $49.99/yr | Pricing not publicly disclosed |
| Free tier We Win | 5 threads/day (recurring) | 20 lifetime conversions |
| Output formats We Win | PDF, HTML, TXT | PDF only |
| Batch limit per operation We Win | No fixed cap | 100 emails per batch |
| Merge multiple emails into one PDF We Win | Yes, with TOC | |
| On-device processing | ||
| Attachments included | Yes (ZIP bundle) | Yes (alongside PDFs) |
| In-Gmail floating UI | ||
| Chrome Web Store users They Win | 144 | 427 |
Detailed Comparison
Format Range
M2PDF is PDF-only. If PDF is the only format you ever want, that simplicity is a feature.
ThreadPDF exports PDF, HTML, and plain text. HTML preserves the email rendering for web-archive workflows; plain text is the most portable, searchable, grep-able format for downstream tooling. If you've ever wished an export tool gave you something other than a PDF, that's the gap.
Batch Size
M2PDF caps batches at 100 emails per operation — fine for most one-off jobs, friction for larger archives (a tax year of invoices, a whole mailbox before closure), which you'd have to split into chunks.
ThreadPDF enforces no fixed per-batch cap; browser memory and Gmail's selection UI are the practical limits.
Merged Output
M2PDF produces individual PDFs. ThreadPDF can also merge a whole selection into a single PDF with a table of contents — better for exhibits, archives, and anything you'll hand off as one document.
Privacy Parity
Both tools run the conversion in your browser; neither uploads your emails to a third-party server. On privacy, they are essentially equivalent — this is the one axis where M2PDF and ThreadPDF fully agree.
Pros & Cons
Switch Labs
Pros
- Exports PDF, HTML, and plain text (M2PDF is PDF-only)
- No fixed batch cap per operation
- Merged PDF output with a table of contents
- Recurring daily free tier instead of 20 lifetime conversions
- Transparent published pricing at $4.99/month
- On-device processing — same privacy story as M2PDF
Cons
- Free tier is 5/day rather than 20 up front
- Smaller Chrome Web Store footprint than M2PDF today
M2PDF
Pros
- Clean, single-purpose PDF-only tool
- On-device processing
- 20-conversion free tier with all features
- Attachments delivered alongside the PDFs
Cons
- PDF-only — no HTML or plain text
- 100-email-per-batch cap
- No merged-PDF output
- Paid pricing not publicly disclosed
Which Should You Choose?
Choose ThreadPDF If You...
- Need HTML or plain-text export in addition to PDF
- Want merged output as one navigable document
- Plan to export more than 100 emails at once
- Want pricing you can see before installing
Stay With M2PDF If You...
- Only ever export to PDF
- Never export more than 100 emails at a time
- Want a minimal, single-purpose tool
- Are happy with a 20-conversion lifetime free tier
Frequently Asked Questions
Same Privacy Story, More Formats, No Batch Cap
Install ThreadPDF free from the Chrome Web Store. PDF, HTML, and plain-text export with attachments bundled in.
Try ThreadPDF Free