The project is clearly stated in the attachment.
1. Email System, similar to yahoo, gmail etc.
2. Plugin Android
All payments will be maid by milestones
An agreement will be written for the project
1. If you have experience in such a project an advantage
2. Send portfolio of projects done
3. Time Line Critical
3. Since this is a free service, cost is a very critical determining factor
4. Explain in quote, time line, milestones etc.