There are two locations where you can upload an image. Most of the time, you will be in the Email Editor and replacing the placeholders under the various Splash images.
You do not have to be designing an email to upload images, though. You can also upload images under your Media organizer.
Upload Media has four options: Browse Files, Import from URL, Import from Dropbox, and Import from Google Drive.
The Browse Files option allows you to upload an image directly from your desktop. After you have clicked Browse Files, search for the image that you want to upload from your computer, select it, and then click the Start upload button. You also have the option of a Cancel button if you uploaded an incorrect image.
Alternatively, if the image that you want to upload is right on your desktop, drag and drop it in the “Drop files from your computer here” area.
Import from URL allows you to upload an image by linking to its URL. If you have images that are uploaded to hosting sites such as Imgur, TinyPic, or Photobucket, then you will want to choose this option.
Copy the URL of the image that you want to upload or use, paste it in the URL field, and click the Import button.
Import from Dropbox allows you to upload images from your Dropbox account.
If you or your company has a Dropbox account where images for future emails are stored, you can upload those to your Media organizer.
Click the Import from Dropbox option, and a mini Dropbox window will appear. If you are logged into your account, browse through your Photos section, select the photo — or photos — that you want to upload, and click on the Choose button once you are done.
Import from Google Drive allows you to upload your images by importing them from your Google Drive. Click on the option Import from Google Drive, and a small pop-up window will appear, requesting permission to access files in your folder. Click the Allow button, and your Google Drive’s photo gallery will appear.
From there, you can select a specific photo to upload, or choose multiple photos by holding the ‘command’ button. Once you are satisfied, click the Select button on the bottom left corner.
The second tab, My Images, allows you to select an image that you have already uploaded in your Media Library, as opposed to uploading one. This tab only appears while you are on the Email Editor.
That covers the many ways on how you can upload your images. If you can, try each of these uploading methods to see which works best for you.