The fastest way: use your phone's camera

If you have a smartphone, the quickest path is to photograph the document with your phone's built-in camera app, then email the photo. Most phones now have a document mode that automatically crops the image, removes shadows, and converts it to black and white — making it look like a scan rather than a photo. On iPhone, this is built into the Notes app; on Android, Google Lens does the same thing when you open the camera and tap the document icon.

Once you have the image, open your email app, start a new message, and attach the photo. The file will be small enough to send immediately. This method works for one or two pages and requires no equipment beyond what you already own.

Key Takeaways

  • Your phone's camera with document mode is the fastest option for one or two pages and requires no scanner or special software.
  • A dedicated scanner or multifunction printer produces cleaner results for multiple pages and stores them as PDFs instead of photos.
  • Most scanners connect to your computer via USB or WiFi and come with software that walks you through each step.
  • After scanning, you attach the file to an email just like any other document — no special email software is needed.

Using a scanner or printer with scanning built in

If you have a multifunction printer (one that prints, copies, and scans), it likely has a scanner built in. Place the document face-down on the glass or in the automatic feeder, then use the printer's buttons or touchscreen to start a scan. The printer will save the file to your computer, usually in a folder called "Scans" or "Documents."

If you do not have a printer but want to scan regularly, a standalone scanner costs between $100 and $300. Popular models include the Fujitsu ScanSnap and Brother ADS series. These connect to your computer by USB or WiFi and come with software that guides you through scanning, naming, and saving the file.

Once the scan is saved on your computer as a PDF or image file, open your email, click "Attach" or the paperclip icon, and select the file. The email will send it to the recipient just like any other attachment.

Scanning multiple pages into one file

When you have more than a few pages, you want them in a single PDF file rather than separate images. Most scanner software has a "continuous scan" or "batch scan" mode that lets you feed pages one at a time and combines them automatically.

Place the first page in the scanner, start the scan, remove it, place the second page in, and the software will add it to the same file. When you finish the last page, the software will ask you to save. Name the file something clear like "Tax Return 2024" and save it as a PDF. Then attach that single PDF file to your email.

If your scanner does not have this feature, you can scan each page separately, then use free software like ILovePDF or Smallpdf (both available online) to combine the images into one PDF before emailing.

Reducing file size before sending

A scanned document can be large — sometimes 5 to 10 MB per page — which may hit your email provider's attachment limit or take a long time to send. Most email services allow attachments up to 25 MB, but some recipients may have stricter limits.

To shrink the file, use your scanner's software settings before you scan. Look for an option called "compression," "quality," or "resolution." Lowering the resolution from 300 DPI to 150 DPI cuts the file size roughly in half and is still readable for most documents. If the file is already scanned, you can compress it afterward using free online tools like ILovePDF or Smallpdf — upload the PDF, select "compress," and download the smaller version.

Scanning directly to email

Some multifunction printers and higher-end scanners have a feature that scans directly to email without saving to your computer first. On the printer's touchscreen, you enter the recipient's email address, press scan, and the device sends the file directly. This is convenient if you scan the same document to the same person often.

To set this up, you usually need to configure the printer's network settings with your email account information. Check your printer's manual or manufacturer's website for instructions — the steps vary widely by brand. Once configured, you can scan and send in seconds without touching your computer.

Common problems and how to fix them

The scan is upside down or sideways. Most scanner software has a rotate button. Open the file, click rotate, and save it again before emailing. Some email clients also let you rotate before sending.

The text is blurry or hard to read. You likely scanned at too low a resolution. Rescan at 300 DPI instead of 150, or if the original is faint, try the "enhance" or "brightness" setting in your scanner software.

The file is too large to email. Compress it using the method described above, or split it into two smaller PDFs and send them in separate emails.

The scanner is not showing up on your computer. Restart both the scanner and your computer, then check that the USB cable is fully connected or that the scanner is on the same WiFi network. If it still does not appear, reinstall the scanner's software from the manufacturer's website.

Frequently Asked Questions

Can I scan a document and email it from my phone without a scanner?

Yes. Use your phone's camera app with document mode enabled, take a photo of each page, then attach the images to an email. iPhone's Notes app and Google Lens both have document modes that crop and clean up the photo automatically. For multiple pages, use a free app like Adobe Scan or Microsoft Lens to combine them into a single PDF before emailing.

What file format should I use when I scan?

PDF is the standard. It preserves the layout, works on any device, and is smaller than most image formats. If your scanner offers only JPEG or PNG, PDF is still better — use an online converter to change the image to PDF before emailing, or ask the recipient which format they prefer.

How long does it take to scan and email a document?

Using your phone's camera, two to three minutes for one page. With a scanner, five to ten minutes for multiple pages, depending on how many pages and whether you need to compress the file. Scanning directly to email (if your printer supports it) takes under a minute once it is set up.

Do I need special email software to send a scanned document?

No. Any email service — Gmail, Outlook, Yahoo, or your work email — accepts scanned PDFs and images as attachments. Just click the attach button, select your file, and send as you normally would.

What if the person I am sending to cannot open the PDF?

PDFs open on nearly every device and browser, but if they have trouble, ask what format they need. You can convert a PDF to an image (JPEG) using free online tools, or rescan as an image file if your scanner allows it. Most people can open PDFs, so this is rarely necessary.