There could be several reasons why images aren't coming through in the emails you send. Here are some of the most common issues:
Image Size: Large images can sometimes be blocked or not loaded due to size constraints on the recipient's email server. Try to keep the image sizes as small as possible without sacrificing necessary quality.
Image Format: Some email clients might not support all image formats. The most commonly supported formats are JPEG, PNG, and GIF.
Email Client Settings: Some email clients block images by default to protect against spam and malware. The recipient can usually manually enable images to display, but if their default setting is to not display images, they will need to adjust this.
Email Format: The email could be sent in a format that doesn't support images well, such as plain text. Ensure you're sending emails in HTML format if you want to include images.
Embedded vs Attached Images: If you are embedding images, some email clients might have problems displaying them. Attaching images usually ensures the recipient can at least download them, if not view them directly in the email.
Blocked Images or URLs: If the image is linked from a third-party website, it could be that the recipient's email client or their company's firewall settings are blocking the URL or the site where the image is hosted.
Slow Internet Connection: Sometimes, images don't load simply because the recipient has a slow Internet connection.
Corrupt Images: If the image file is corrupt, it won't display properly in the email.
To improve the chances of your images being displayed correctly, you can:
Use widely supported image formats like JPEG or PNG.
Compress your images to a reasonable size.
Attach images instead of embedding them.
Host images on a reliable server if they're linked.
Always test your emails on different email clients and devices before sending them to clients.
The vast majority of our clients use Microsoft, so here is a little extra information around that Mail provider
Microsoft's Outlook email client, has some measures in place that block images in emails by default as a way to protect users from potentially harmful content. Here are some of the measures:
Block external content: By default, Outlook blocks external content (like images) in emails to protect your privacy and prevent junk email senders from knowing that the email has been opened.
Junk Email Filter: Outlook's Junk Email Filter automatically sends suspected spam to your Junk Email folder. All picture placeholders are displayed instead of pictures in any message that is evaluated as spam or phishing.
Blocked senders: If you've added a sender to your blocked senders list, their emails, including images, will not show up.
Security Zones: Outlook uses Internet Explorer's security zones, and images from sites in the Restricted Sites zone will be blocked.
HTML vs Rich Text vs Plain Text: Outlook provides several options for the format of emails. If an email is sent in plain text format, the images cannot be displayed within the email.