What are some alternatives?
When comparing IMAP Upload and Founderkit, you can also consider the following products
imapsync - Console-based utility for migrating IMAP mailboxes.
SiteStacks - Discover the complete tech stack of any website
Yippie Move - The world's best email transfer tool
Startup with Google - Tools to help with your new startup
audriga Email and Groupware migration - Easily migrate your email, contacts, calendar items and tasks to your new provider or server. No software installation is required.
Stackshare - StackShare is a comprehensive website that gives its users the chance to organize and share their technology stack with the rest of the community.