Can not send images because of the size limit of the mail attachment? Do not have space to store photos on the SD card?
JPEG Optimizer and Compressor is the best solution for you.

JPEG Optimizer and Compressor will allow you to optimize and compress large photos into smaller sized photos with very less or negligible loss in quality.

More unique ISO Noise Optimization algorithm allows you to reduce image file size with quality enhancement.

Note: Also supports Android Nougat (Android N).

Some features of JPEG Optimizer & Compressor:
1. Optimize Compress Resize photos.
2. JPEG Optimizer & Compressor allows you to tune quality of compressed image.
3. Unique ISO Noise Optimization algorithm.
4. Share and save images as separated JPEGs