Mainsail cover boomerang gmail

It seems like you're trying to connect a few unrelated things!

Here's a breakdown of what you've typed:

  1. "Mainsail cover" - This could refer to a protective cover for the mainsail of a sailboat, which is designed to keep the sail clean and dry when not in use.
  2. "Boomerang" - This is a type of projectile that is designed to return to the person who threw it. It's often used as a toy or a symbol of Australian culture.
  3. "Gmail" - This is a free email service provided by Google.

I'm not sure how these three things are related, but I'll try to provide some possible connections: