EmailVerify for .NET

With the term catch-all, we mean a mailbox on a domain that will receive all of the email messages addressed to that domain, even if their addresses do not exist in the mail server. EmailVerify for .NET detects catch-all domains automatically and gives back a specific status code that signal the presence of such a domain; while catch-all domains actually accept every possible local part, you will usually don't want to consider addresses that pertain to them as a failure but, rather, you may possibly want to flag them in your database. Under the CatchAll validation level, however, the presence of these addresses yields to a specific kind of failure, as shown in the code below.

            var engine = new VerificationEngine();

            // ...

            var result = engine.Run("bob@example.com",
                VerificationLevel.CatchAll).Result;

            switch (result.LastStatus)
            {
                case VerificationStatus.Success:
                    // The mailbox exists and the server is not a catch-all
                    break;

                case VerificationStatus.ServerIsCatchAll:
                    // The server acts as a catch-all for the requested domain
                    break;

                case VerificationStatus.CatchAllConnectionFailure:
                    // A network failure happened while performing the catch-all
                    // test
                    break;
                    
                case VerificationStatus.CatchAllValidationTimeout:
                    // A timeout occured while performing the catch-all test on
                    // the server; we need to increase the related settings value
                    break;

                // TODO: Add more cases, if needed

                default:
                    // ...
                    break;
            }