Comparison
Zamzar is a general-purpose converter handling 1,100+ file formats; MsgToPdfConverter is built for one job — converting Outlook MSG and EML files to PDF. If you specifically need to convert email files with headers and attachments intact, a purpose-built tool is generally a better fit. If you need to convert many different file types beyond email, Zamzar's breadth is the advantage.
Converting a client email for a case file: use a specialist tool — header accuracy and attachment handling matter more than convenience here. See how MSG to PDF works for legal and eDiscovery workflows.
Occasionally converting a random file type once a month: Zamzar's breadth means you won't need a second tool the next time it's a video or a spreadsheet instead.
Archiving a shared mailbox before decommissioning it: a specialist batch converter built specifically for email will handle the volume more predictably than a general-purpose queue. See the bulk MSG to PDF converter for high-volume email archiving.
Building a workflow that needs programmatic conversion: Zamzar's API is the more mature option today for that specific need.
| MsgToPdfConverter | Zamzar | |
|---|---|---|
| Formats supported | MSG, EML → PDF (focused) | 1,100+ formats |
| Preserves email headers | Yes | Varies by format handler |
| Attachments included | Yes | Varies |
| Free file size limit | 10MB | 50MB |
| Account required | For 10+ conversions or batch | For files over 50MB |
| Batch conversion | With free account | Paid plans |
| API access | Not currently offered | Available |
| Best for | Email-specific conversion, depth | Broad, occasional format conversion |
Yes. Guests get 3 free conversions with no account, and a free account raises that to 10 plus batch upload — similar in spirit to Zamzar's free tier, with a smaller file size limit (10MB vs. Zamzar's 50MB). See the full breakdown on the pricing page.
This varies by how their general-purpose conversion pipeline handles the MSG format specifically — since it's one of over a thousand formats they support, it isn't built with the same email-specific focus.
Yes — there's no lock-in with either tool. Many people use a specialist converter for email specifically and a general tool like Zamzar for everything else.