public EFServersData(MailDatabaseContext db) => _db = db;
public EFSchedulerTasksData(MailDatabaseContext db) => _db = db;
public EFMailsData(MailDatabaseContext db) => _db = db;
public EFRecipientsData(MailDatabaseContext db) => _db = db;
public MailingRepository(MailDatabaseContext mailDatabaseContext) { _mailDatabaseContext = mailDatabaseContext; }