When using the SendPro Online software for Mac, the message "SendPro can't be opened because Apple cannot check it for malicious software" appears.
On OS X 10.15 and higher, only programs made by Apple's "identified developers" are automatically approved for use.
After installing the SendPro Online software:
- Right-click/Control+click on the application icon and choose Open. You will receive the same message, but there will be an Open button to allow the application.
- Click the Open button. This only needs to be done once.
UPDATED: August 14, 2021