Yes, you can. 123FormBuilder is an Authorize.net certified solution. This means you can trust our services when receiving money in your Authorize.net account from your clients through form submissions.
To integrate your online order form with your Authorize.net payment gateway, go to Settings → Payments, in the Payment Processors section, select Authorize.net from Payment gateway and hit Add payment gateway to enable the integration with this payment processor. Three new fields will pop up in a box below: API Login ID, Transaction Key and MD5 Hash. Type in your Authorize.net information, enable the processor on the top right corner of the box and click Save.
2. In Account → Security Settings, click on the MD5 Hash link and type in any code, which will be used to for the 123FormBuilder – Authorize.net integration. Just don’t forget the code you have submitted in this section.
3. Return to the Account → Security Settings section and go to API Login ID and Transaction Key. Here, you can copy the Login ID and Transaction Key that you require back in 123FormBuilder.