What are some alternatives?
When comparing IMAP Upload and Startup with Google, you can also consider the following products
imapsync - Console-based utility for migrating IMAP mailboxes.
Founderkit - Unbiased reviews of startup tools from experienced founders
Yippie Move - The world's best email transfer tool
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.
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.
SiteStacks - Discover the complete tech stack of any website