What software is the most convenient for couriers to send text messages?

The courier assistant app is very easy to use and is very suitable for couriers. Scanning mobile phone number input, fast recognition speed, 200 mobile phone numbers can be scanned in 20 minutes, and it can be done in half an hour. You can also take photos, automatically identify the single number, and save photos for free 1 year, which is super convenient. It seems that other software also charges for saving pictures.