Hello, I have read your RFQ. In general you need collect the driver signatures along with shipping document.
If you only need to collect driver signature under image format I don't need we need any extra app like Docusign (digital signature solution)
Due some limitation, android app cannot direct send email by using user email setup on Email/Gmail app. So there are 2 solution:
* App call Email/Gmail app and passing data (to emails, subject, content, attachments), user view preview these information then click Send on Email/Gmail app.
* App call web service with payload data (to emails, subject, content, attachments), we service will use reconfigure email to send (Web services: Amazon SES, SendGrid, MailChimp ..., these have free quota about 10000 - 15000 emails per month)
The app flow as:
* user choose take picture from camera/ load from device
* user can mark some part on image
* user input there name/ notes
* user sign their name
App send email (via 1/2 options above) with attachment.
I have 4 years working on Android Platform (also iOS). I would like to help you build a good app for your job. Please contact me if you are interesting to working with me.