PageGate can be easily configured to pass messages through FirstDue Messaging (https://FirstDuesizeup.com/). Here are the steps you'll need:
1) Open the PG Admin.
2) Right click on Carriers, left click on Add.
3) Name the Carrier: FirstDue
4) Set the following:
Protocol: SMTP
Carrier Domain: sizeup.firstduesizeup.com
Max Chars: 600
5) Click on Apply.
To add an FirstDue Recipient:
1) Open the PG Admin.
2) Right click on Recipients, left click on Add.
3) Give the Recipient a name.
4) Set the Carrier to: FirstDue
5) In the ID/PIN field, enter the part before the @ of the email address FirstDue has provided. For example, if the FirtDue email address is 12354@sizeup.firstduesizeup.com, you would use 12354 in the ID/PIN field.
6) Click on Apply.
Happy Messaging!