public EmailService(
     IJobRepository <Email> emailRepository,
     FluentEmail.Core.IFluentEmailFactory emailFactory,
     IClient bugsnagClient,
     FluentEmail.Core.Interfaces.ISender sender)
 {
     this.emailRepository = emailRepository;
     this.emailFactory    = emailFactory;
     this.bugsnagClient   = bugsnagClient;
     this.sender          = sender;
 }