Why do signature images become oversized in replies and forwards?
When you create an email signature template in MySignature with custom image dimensions, your initial outgoing email displays the images at the intended size. However, when you reply to or forward that message, some email clients ignore the Width and Height values set on the image in the signature template and revert the image to its native file size.
Because the email client falls back to the underlying file dimensions instead of the template's HTML width and height settings, uploading an oversized original image causes it to appear much larger than intended in replies and forwards.
What image specifications should I use for my MySignature template?
To prevent your email signature images from enlarging when an email client reverts to native image dimensions, prepare your image files according to these specifications before uploading them to MySignature:
Dimensions: Create the image at the required size for your signature template rather than relying on template resizing. For example, if your logo displays at 150x150 pixels in the signature, upload a 450x450 pixel image.
File format: Save and upload the image in PNG format.
File size: Keep the image file size up to 50 KB.
Resolution: Use a high-resolution image with a DPI of 300 px.
How do I resize and replace my signature image in MySignature?
Instead of resizing an oversized image inside the MySignature signature template, resize the file externally and upload the resized version to your signature:
Open your original image in an image editing application, such as Adobe Photoshop or Microsoft Paint.
Resize the image to the required dimensions for your signature template while keeping the file in PNG format, up to 50 KB, and at a 300 px DPI resolution.
Save the resized file using a clear naming convention so you can distinguish it from the original file (for example, name the original file logo_original.png and the resized file logo_100x100.png).
Upload the newly resized image to your MySignature signature template to replace the previous image, then send a test reply or forward to confirm the image maintains its intended size.
Need additional help?
If you have any other questions, visit our Knowledge Base for more articles, or contact our Support Team via live chat or email.