Add maildroppa.com

[MarcusBiel]

trafficstars

Pull Request Template

Please ensure all items below are checked before creating a pull request:

• [x] My changes were made in the resources folder, not in the auto-generated README.md file or db folder
• [x] My submission is formatted according to the guidelines in the contributing guide
• [x] My submission is ordered alphabetically based on the resource name
• [x] My submission has a useful description
• [x] I have searched the repository for any relevant issues or pull requests

[MarcusBiel]

Add Maildroppa

[marcelscruz]

Thank you!