insert image to e-mail?

Please tell me, I can’t understand how in the letter template to insert your image. Mail comes without images.
Thank…

You insert an image by using the TinyMCE editor, or by inserting the product image field/variable.

? my insert image not visible to mail.

I create new mail template, insert image ( logo and other image) in tab or row, save template. after save template - image not visible and not visible to sent an email.

How have you inserted the image? Is the URL pointing to an external server or is it a file that has been uploaded to the CRM?

i insert file // crm/upload/image directory. patth to image file. TinyMCE not save and visible.