How to Download an Email: Save Messages Locally, Export Inboxes, and Back Up Your Mail

Most people interact with email entirely inside a browser or app — but there are plenty of reasons you might want to download an email to your device. Archiving important records, backing up a full inbox before switching providers, saving an email as a PDF for legal purposes, or simply keeping a local copy offline are all valid use cases. The method that works best depends on how you access your email, what you want to save, and what you plan to do with it.

What "Downloading an Email" Actually Means

The phrase covers a few different things:

• Saving a single email as a file on your computer (.eml, .msg, or PDF)
• Exporting an entire inbox or folder from a provider like Gmail or Outlook
• Configuring an email client to pull messages from the server to local storage using POP3 or IMAP
• Printing to PDF as a lightweight alternative when formatting doesn't matter

Each approach produces a different result and suits a different purpose. A single saved .eml file is portable and reopenable in most email clients. A full inbox export is a bulk archive. A PDF is human-readable but not re-importable into a mail client.

How to Download a Single Email 📧

In Gmail (Web)

Open the email, click the three-dot menu (More options) in the top-right of the message, and select Download message. Gmail saves the file in .eml format. This file can be opened in Outlook, Apple Mail, Thunderbird, and most other desktop clients.

In Outlook (Desktop App)

Select the email, go to File > Save As, and choose a location. Outlook saves messages as .msg by default — a format that opens natively in Outlook but may require conversion for other clients.

In Apple Mail

Drag the email from the message list directly to your desktop or a folder. It saves as a .eml file. Alternatively, go to File > Save As and choose the format and location.

Saving as PDF (Any Platform)

Open the email and use Print > Save as PDF (or Print to PDF on Windows). This works in virtually any web-based or desktop mail client and produces a readable document, though it won't be re-importable as a live email.

How to Export a Full Inbox or Mailbox

When you want to download everything — or a large folder — individual saving isn't practical. Most major providers offer bulk export tools.

Google Takeout is the most straightforward bulk export option for Gmail users. Navigate to takeout.google.com, select Mail, choose your delivery format, and Google prepares a downloadable archive. The resulting .mbox file can be imported into Thunderbird or other IMAP-compatible clients.

Outlook .pst files are the standard archive format for Microsoft's ecosystem. They're large, structured containers that hold mail, calendar entries, and contacts — but they're only natively supported by Outlook for Windows.

Using an Email Client to Download Mail Locally

A more permanent solution for keeping local copies is configuring a desktop email client like Mozilla Thunderbird, Microsoft Outlook, or Apple Mail to use POP3 instead of IMAP.

• IMAP keeps messages on the server and syncs them to your device. Delete from one place, it disappears everywhere.
• POP3 downloads messages to your local device and (depending on settings) removes them from the server. Once downloaded, they live on your machine.

This distinction matters a lot. If your goal is ongoing local backup rather than a one-time export, POP3 accomplishes it automatically every time the client checks for new mail. The tradeoff is that messages won't be accessible from multiple devices unless you configure POP3 carefully (many clients offer a "leave a copy on server" option).

Factors That Affect Which Method Works for You 🖥️

Your email provider sets the baseline. Not every provider supports POP3 — many modern services are IMAP-only or require you to enable POP3 manually in settings. Gmail requires enabling it under Settings > See all settings > Forwarding and POP/IMAP.

Your operating system and device determine what file formats you can open after downloading. .msg files are Windows/Outlook-native. .eml files are more cross-platform. .mbox requires an email client or conversion tool to be readable.

The volume of mail affects your approach. Downloading hundreds of thousands of emails via POP3 or Takeout is a slow, storage-intensive process. A single folder export is far more manageable than a 10-year inbox.

Your purpose shapes the format you need. Legal records often require PDF with visible headers. Technical migration requires .eml or .mbox. Archival backup works best with a structured export that preserves metadata like timestamps and sender addresses.

Technical comfort level plays a role too. Google Takeout and Gmail's "Download message" option require almost no setup. Configuring POP3 in a desktop client, or converting an .mbox file into a usable format, involves more steps and some tolerance for troubleshooting.

What You Might Run Into

Some providers throttle bulk exports or impose download size limits. Very large inboxes may require splitting the export into date ranges. Certain email clients won't open .mbox without a plugin. Attachments embedded in exported emails may or may not be preserved depending on the tool used — always verify a sample file after export before assuming the entire archive is intact.

Encryption is another variable. If your email provider uses end-to-end encryption (like ProtonMail), export options work differently and may require provider-specific tools rather than standard IMAP downloads.

The right method isn't universal — it sits at the intersection of your provider, your device, the format you can actually use afterward, and what you're trying to accomplish with the downloaded mail.