Advanced Installer provides a dedicated wizard that helps package a VSTO addin. The generated output package can be either an MSI or EXE.
It only takes minutes to follow the wizard, import a Visual Studio solution and get the final deployment package.
For add-ins generated with the Add-in Express framework you must take a different approach. The following tutorial explains how to build such an MSI with Advanced Installer.
Visual Studio Integration
Once the project is generated, Advanced Installer has a free extension for Visual Studio that enables future builds of the setup package to be initiated directly from the add-in's VS solution.