Why do images overlap my signature on iPhone, iPad, or Apple Mail?
When you view an email in Apple Mail on an iPhone, iPad, or Mac, your logo or banner image may expand and overlap parts of your signature text, banner, or social media icons.
Cause: Apple Mail attempts to apply the Width and Height values defined in your signature template while simultaneously reverting the image to its native file dimensions. This commonly occurs when sending emails from a mobile device and viewing them on a Mac or iPad.
Known limitation: This is a longstanding rendering issue in Apple Mail documented in the Apple Community - check this article for more details. While Apple has not released an official fix, you can prevent overlapping using the three workarounds below.
Workaround 1: Upload high-resolution images with round pixel dimensions
To prevent Apple Mail from distorting or overlapping your MySignature graphics, format and upload your logo, photo, and banner images using exact resolution ratios and round pixel dimensions:
Logo or personal photo: Upload your image as a .png file at 300 DPI resolution. Scale the file to 3 times its display size in the template (for example, upload a 450x450 pixel file if your logo displays at 150x150 pixels in your signature).
Banner image: Use a high-quality image with an aspect ratio of 1:5 or 1:6 (for example, banners in the MySignature gallery are 1000x200 pixels).
Dimension rule: Ensure the width and height in pixels for all uploaded images are divisible by 2, 5, and 10 (such as 200x200 or 1000x200).
Expected outcome: Apple Mail scales your MySignature logo and banner cleanly without reverting them to oversized dimensions that overlap surrounding signature elements.
Workaround 2: Reinstall your signature on iPhone or iPad using Shake to Undo
When pasting a signature into the iOS Mail app, iOS automatically strips or alters HTML formatting unless you trigger the Shake and Undo action immediately after pasting.
Copy your email signature from your MySignature dashboard on your iPhone or iPad.
Open the Settings app on your device and go to Mail.
Tap Signature, then select Per Account.
Paste your MySignature email signature into the signature field for each email account individually.
Physically Shake your iPhone or iPad immediately after pasting, then tap Undo when the Undo Change Attributes prompt appears.
Expected outcome: The iOS Mail app restores the original HTML spacing and image proportions of your MySignature email signature so elements do not overlap.
Workaround 3: Reset iPhone or iPad display and accessibility text settings
Enlarged system text or zoomed display settings on iPhone and iPad can force email signature text and images to expand and collide. Verify and adjust these three settings on your iOS device:
Open Settings > Display & Brightness > Text Size, and move the slider back to the center position.
Open Settings > Display & Brightness > View (or Display Zoom), and set it back to Standard.
Open Settings > General > Accessibility > Larger Text, and turn Larger Accessibility Sizes to OFF.
Expected outcome: Your iPhone or iPad renders email signatures at standard scale without enlarged fonts pushing images over your signature layout.
Need more help?
If your email signature still overlaps on iPhone, iPad, or Apple Mail after trying these workarounds, check our Knowledge Base for more articles, or reach out to our Support Team via live chat or email.