"SendPro can't be opened because Apple cannot check it for malicious software" message when using the SendPro Online software for Mac

Learn how to resolve the message "SendPro can't be opened because Apple cannot check it for malicious software" when using the SendPro Online software for Mac.
Products affected: SendPro® Online software for Mac

Issue

When using the SendPro Online software for Mac, the message "SendPro can't be opened because Apple cannot check it for malicious software" appears.

Cause

On OS X 10.15 and higher, only programs made by Apple's "identified developers" are automatically approved for use.

Resolution

After installing the SendPro Online software:

  1. 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.
  2. Click the Open button. This only needs to be done once.

UPDATED: August 14, 2021