Our plans Bronze, Silver, Gold and Platinum allow you upload 10.000, 50.000 and 125.000 photos, 500.000 respectively. Is an estimate based on the size file that we recommend to upload the photos to our websites that is 200 Kb. Using this size, you will be able to show your photos with good quality on the most screen resolutions used on internet.
However, it's our recommendation to optimize your website space. You can upload the photos with the size that you choose.
Our technical support can advise you in each moment about how to optimize your pictures. You can find more information and articles in our help page and our blog.