Components

Smsdroid app is an open-source app that helps send our messages in offline mode. It very good and can act as a default messaging app for you devices. But smsdroid application does not have block this contact feature.

Proposal

I suggest smsdroid to add a contact block feature so users can stop receiving messages or calls from certain contacts by blocking them.

Mockups / Examples

• Display smsdroid for now.
  

• Display smsdroid if my ideas implementation.
  

Benefits

Usefulness or rather the benefits of this feature, users can stop receiving messages or calls from certain contacts that have been blocked.
This feature will greatly help the users to stop receiving messages from people who always bother them by blocking them.