The basic steps differ slightly by email service, but the process is almost always the same

To add an image to an email, you compose a new message, click the attachment or image button in the toolbar, select a photo from your computer or device, and the image appears in your email. The exact location of that button and what happens next depends on whether you use Gmail, Outlook, Apple Mail, or another service. Most services let you insert images directly into the message body so they display inline, or attach them as separate files that recipients download.

The choice between inline images and attachments matters. Inline images appear as part of the message itself and load automatically for most recipients. Attachments stay separate and require a click to open, but they preserve the original file quality and let you send multiple images without cluttering the message text.

Key Takeaways

  • Gmail, Outlook, and Apple Mail all have an image or attachment button in the compose window — usually represented by a paperclip or image icon.
  • Inline images display inside the email message, while attachments appear as separate files the recipient must click to view.
  • Image file size matters: very large files may be rejected by the recipient's email provider or take too long to send.
  • Some email services compress images automatically when you insert them, which reduces file size but may lower quality slightly.

Adding images in Gmail

In Gmail, open a new message or reply and look for the image icon in the toolbar at the bottom of the compose box. It looks like a small photograph. Click it and choose whether to upload an image from your computer, search Google Images, or insert a link to an image already on the web.

If you upload from your computer, Gmail opens a file browser where you select the image and click Open. The image then appears inline in your message. You can resize it by dragging the corners, and you can add text above or below it. Gmail compresses images automatically, so a large photo file becomes smaller without you having to do anything.

To attach an image instead of inserting it inline, use the paperclip icon next to the image icon. This keeps the image as a separate file rather than embedding it in the message body.

Adding images in Outlook (web and desktop)

In Outlook on the web, compose a new message and click the image icon in the toolbar — it looks like a small picture frame. You can insert an image from your device, from OneDrive, or from a web address. Select the image, and it appears inline in your message.

In Outlook desktop (Windows or Mac), the process is similar. Click Insert in the ribbon menu, then Pictures, then choose whether to browse your computer or search online. The image inserts into the message body where your cursor is positioned.

To attach an image as a file instead, use the Attach button (paperclip icon) in the toolbar. This is useful if you want to send the original high-quality file without Outlook resizing it.

Adding images in Apple Mail

In Apple Mail on Mac, compose a new message and click the image icon in the toolbar (it looks like a small picture frame), or go to Edit menu and select Attach Files. Select the image from your computer and it appears inline in the message.

On iPhone or iPad, open Mail, start a new message, and tap the attachment icon (paperclip or plus sign, depending on your iOS version). Select Photo Library or Files, choose your image, and it inserts into the message. Apple Mail on mobile devices typically attaches images as files rather than embedding them inline.

File size and image quality considerations

Email providers set limits on how large a single message can be. Gmail allows up to 25 MB per message, Outlook allows up to 20 MB, and most other services fall somewhere in that range. A typical photo from a smartphone is 2 to 5 MB, so you can usually send several images in one message without hitting the limit.

When you insert an image inline, Gmail and Outlook compress it automatically to reduce file size. This happens without you seeing a dialog or choosing a quality level — the services do it in the background. If you need the original uncompressed image to reach the recipient, attach it as a file instead of inserting it inline.

If you are sending very large files or many images at once, consider using a file-sharing service like Google Drive, OneDrive, or Dropbox instead. You can insert a link to the shared folder in your email, and recipients download the images from there rather than receiving them as attachments.

Troubleshooting images that won't send

If an email with images won't send, the most common cause is that the total message size exceeds your email provider's limit. Remove one or more images and try again, or use a file-sharing link instead.

Some email services block certain image file types. JPG and PNG files are supported everywhere, but BMP, TIFF, and some other formats may not work. If an image won't insert, try converting it to JPG using free tools like Pixlr or your device's built-in image editor, then insert the converted file.

If images appear as broken links or gray boxes in the recipient's inbox, the image file may have been deleted from where it was hosted, or the recipient's email client is set to block images for security reasons. This is not something you can fix on your end — the recipient can choose to display images in their email settings.

Inline images versus attachments: when to use each

Use inline images when you want the image to be part of the message itself — for example, a screenshot showing instructions, a product photo in a sales email, or a chart you are discussing in the message text. Inline images display automatically and feel like part of the conversation.

Use attachments when you are sending the original file for the recipient to download, edit, or archive — for example, a high-resolution photo, a design file, or a document scan. Attachments preserve the original quality and make it clear that the file is separate from the message.

Some recipients have image blocking turned on for security reasons, which means inline images may not display until they choose to show them. Attachments are not affected by image blocking, so if you need to may provide the recipient sees the image, attaching it as a file is more reliable.

Frequently Asked Questions

Can I add images to emails on my phone?

Yes. On iPhone, open Mail, start a new message, and tap the attachment icon to insert a photo from your library. On Android, the process depends on your email app — Gmail, Outlook, and most others have an attachment or image button in the compose window. The image inserts the same way it does on a computer.

What image file types work in email?

JPG and PNG are supported by all email services. GIF, BMP, and WEBP usually work but are less common. If an image won't insert, convert it to JPG using your device's photo editor or a free online tool, then try again.

Why do my images look blurry after I send them?

Gmail and Outlook compress inline images to reduce message size, which can make them appear slightly less sharp. If you need the recipient to see the original quality, attach the image as a file instead of inserting it inline, or use a file-sharing link.

Can I add images to a signature?

Yes, most email services let you add an image to your signature. In Gmail, go to Settings, scroll to Signature, and click the image icon to insert a logo or photo. In Outlook, go to File, Options, Mail, Signatures, and use the Insert menu to add an image. The image appears at the bottom of every email you send.

What happens if the recipient's email doesn't support images?

Very old or text-only email clients may not display images at all. If you are sending to someone using an older system, include a text description of the image in the message so they understand what you are referring to even if the image does not show.