Mail Designer 365 allows you to define the level of compression for an image area. To do so, please choose an image area and click the ”Optimize image” button from Style section.
You can now choose the format your image area will be saved as. Select ”JPEG:”
Also, you can drag the slider to the level of compression you want to use. You will also see the size the image area will have for a certain compression level.
Best quality settings make your image sharper but will also increase the size of your template. Click ”OK” to save your changes.
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