Creating visually engaging campaigns is key to capturing the attention of your contacts and driving conversion. While Positive User helps your team build clean, responsive email designs, desktop email clients like Microsoft Outlook often display these messages differently than webmail services.
Understanding why these visual inconsistencies happen allows you to make smart design choices from the start. By adapting your layout choices in Positive User, you can protect your visual branding and ensure your emails always land clearly in front of your audience.
Outlook rendering issues occur because desktop versions of Microsoft Outlook use the Microsoft Word HTML rendering engine to display emails rather than standard web browser engines. Unlike modern email services like Gmail or Apple Mail, Outlook processes email code through word-processing logic, which frequently ignores standard web CSS styling, background images, and modern layout rules.
When your team creates and sends a campaign through Positive User, the platform generates clean HTML code meant to adapt seamlessly across standard email services. However, when Microsoft Outlook receives the email, it reinterprets that code through Word's rendering rules.
Several environment factors determine how an email displays inside Outlook:
Outlook Version: Specific desktop releases process CSS rules differently than Outlook webmail or mobile applications.
Display Settings and Multi-Monitor Setups: Moving Outlook to a secondary display or viewing emails across different screen resolutions can distort layout scaling. Reopening Outlook on your primary screen often resolves secondary display glitches.
Spam Filters: Certain security filters modify incoming HTML code before delivering the message, disrupting the original layout.
For example, if you send a campaign with a rounded call-to-action button, standard email apps render smooth corners using web CSS (border-radius). Outlook ignores this rule entirely, stripping the styling and displaying the button as a sharp rectangle.
Understanding Outlook's HTML limitations helps your team refine how assets and layouts are structured inside Positive User.
Managing your campaign templates and visual assets requires specific design adjustments to prevent common display bugs:
Image Hosting vs. Embedding: Outlook blocks hosted images by default. While embedding images in the email body forces them to display, embedded images increase message weight and harm deliverability. Limit embedded images to critical assets like your logo.
Image Dimensions and Scaling: Outlook ignores HTML image resizing and enforces strict image height limits. Use photo editing software or the built-in image editor to resize images to their exact dimensions before uploading. If an image is truncated, split it into multiple smaller image blocks.
Image Margins: Outlook often strips margins around images, causing text to sit flush against the graphic. To recreate spacing, add a border directly to the image file in the same color as your email background using an image editor.
Animated GIFs: Outlook does not animate GIFs and displays only the first frame. Ensure your key message, offer, and call-to-action appear on that initial frame.
Background Images: CSS background images are not natively supported in Outlook and fall back to solid background colors. Avoid placing important text over background images. If you create your email message in the HTML editor, then you need to declare your background images using HTML, rather than CSS. supports backgrounds declared with HTML.
Fonts and Typography: Custom web fonts (like Google Fonts) render unpredictably in desktop Outlook. Use standard system fonts such as Arial, Helvetica, Georgia, or Times New Roman to guarantee consistent formatting.
Rounded CTA Buttons: To force rounded button edges in Outlook, insert the button as an image asset. Note that if contacts have image downloads disabled, the button will not display until images are enabled.
Multi-Column Alignment: Multi-column layouts (2, 3, or 4 columns) can break or shift during screen scaling. Adjust your email layout width in the email builder from the default 650 px down to around 400 px to stabilize alignment.
Dotted and Dashed Borders: Word forces white background lines between dots and dashes, regardless of your container color. Use dotted or dashed borders only on white backgrounds, or switch to solid borders on colored backgrounds.
Avoid copying and pasting text directly from external document software like Microsoft Word into the darg&drop email builder. Word injects hidden HTML markup that corrupts email formatting.
Paste plan text - copy text from external software into a plain text editor first, or use the plain text shortcut (Ctrl + Shift + V in Chrome) when pasting into your campaign.
