Base64 is a group of similar binary-to-text encoding schemes. It also refers to the MIME standard but here you don’t need to worry much about it. Inline embedding, or base64 images in emailsĪnother way to display an image in the body of your message is to embed base64 image in HTML.
MIME (Multipurpose Internet Mail Extensions) is an Internet standard initially designed for SMTP that allows sending several content types (like HTML and text) in a single message body and supports non-text attachments like images. CID attachments, or embedding an image using MIME object Also, if you want to check how different email clients treat your email, don’t forget to validate the email’s HTML and CSS. Keeping the behavior of email clients in mind, you may choose one of three main techniques of embedding pictures in emails. Follow this link for further instructions. Outlook (applies to Outlook for Office 365 Outlook 2016 Outlook 2013 Outlook 2010)Ī user may unblock picture downloads for a single message, for all messages, or from a particular email address or domain. Yahoo Mail informs a user that this message contains blocked images and allows you to choose “Show images” and “Always show images” options if the automatic display of images is disabled in Security and Privacy settings of the email client.Īpple Mail displays an image and asks if a user wants to “Load Remote Content” when “Load remote content in messages” is disabled in mail preferences.Īpple Mail allows a user to block images by simply switching Gmail informs a user that images are not displayed and offers to “Display images below” and “Always display images from the recipient” if “Ask before displaying external images” is enabled in email settings.
Besides the image size, you now should decide where it will be hosted and how it will be encoded, as no one can guarantee that it will be properly displayed.īelow is a table which shows how some email clients treat images by default. By embedding, we, in fact, are also attaching an image, but now it’s an integral part of the HTML message body. In this case, you need to embed an image in the email, and here is where things get complicated. When you are building transactional emails, whether it’s an order confirmation, account notification, or an automatically generated payment receipt, you most likely will be adding some design elements or at least your company logo. Overall, email services tend to increase the size limits: Outlook desktop lets sending up to 20 MB, while other common email clients allow 25 MB and above. So, if you are not sure about the email client used on the other end, follow the smallest possible limit. Even if your email client/service is able to send a large attachment, it doesn’t mean that your recipient will receive it. The only thing you should worry about is the maximum email size limit. In this case, your recipient will get the attached image as it is, unchanged and uncompressed. Everything is straightforward with enclosing: you add it as a separate file which doesn’t affect the HTML structure. There are two basic approaches to attaching images to email messages: enclosing and embedding.
#Pictures in emails not loading outlook for mac how to
We will talk about email attachments, their types and limitations, primarily concentrating on how to send an HTML email with images. Recently we shared helpful tips on creating and designing HTML emails, and today we’d like to focus on the related topic which is really important for email developers.
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