ResizePixel is a free online image editor where simplicity is essential feature. It is designed to crop, resize, flip, rotate and convert images to various formats. The service is mobile-friendly, fast and easy to use.
Letterflix - Send letters and snail mail online to the USA, Europe, India, or anywhere in the world. Letterflix is the easiest and secure way to send letters and snail mail anywhere in the world from the comfort of your home.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
DocuPost - Sustainably mail letters, checks & postcards online from 75¢
Ralpha Image Resizer - High-speed image batch conversion tool
Letter to Yourself - Send a physical letter to your future self
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.