I installed a plug-in as administrator on different pcs at work and on some pcs, regular users see plugin and on some pcs users do not see plugin. I retraced my steps and sme thing happens. Below are my steps:
The plugin was placed into the extensions folder for filemaker. After it was placed in this folder, I launched filemaker. Went to Edit/preferences... Under the plug-in tab selected SMTPit Pro, then configured it. On the bottom left went to a button that says registration. Entered info:
First Name: xxxx
Last Name: XXXX
License Key: put it in and told me I was registered
...thanks for any advice.