Validating whether e mail is legit

27 Dec

.company, .entreprise, .estate), it's safer not to be restrictive: Late to the question, here, but: I maintain a class at this address: It is based on Les Hazlewood's class, but has numerous improvements and fixes a few bugs. I believe it is the most capable email parser in Java, and I have yet to see one more capable in any language, though there may be one out there.

It's not a lexer-style parser, but uses some complicated java regex, and thus is not as efficient as it could be, but my company has parsed well over 10 billion real-world addresses with it: it's certainly usable in a high-performance situation.

The format of an email address is a little more straightforward than determining whether the domain can accept emails.Since we have specified the type as MX, our command will extract and list the MX records of the email domain.Replace with the domain of the email address that you are trying to verify.MX preference=30, exchanger = alt3.gmail-smtp-in.l.MX preference=20, exchanger = alt2.gmail-smtp-in.l.MX preference=5, exchanger = gmail-smtp-in.l.MX preference=10, exchanger = alt1.gmail-smtp-in.l.MX preference=40, exchanger = alt4.gmail-smtp-in.l.Step 3.You may want to log the fact that the domain uses Google Apps to handle that email so you can bundle your sending to Google in one go. email addresses – you can get creative with this stuff.Your Send Grid analytics dashboard will tell you how you’re doing with deliverability and you can apply the learning from that to your sending practices.The server side validation happens in the background so doesn’t affect the user journey by going off to check a domain that could be wrong, time out, or not have any MX records attached to it.Once an email address has been received (having passed client side validation), it is stored in the database with a boolean flag called ‘can Email’ set to false.Here it is in action: In the above example the results are being logged out to the console but in production, when an email address is deemed legit, the ‘can Email’ flag is then set to ‘true’, ready to receive our inbox wonder. It’s performing a very simple operation but I’ve written it so many times that I decided it was time to stop repeating myself.This is it: It checks specifically for the existence of MX records on a domain and if there are some (more than 1), it returns both a validation and the list of MX records.How do you verify if a given email address is real or fake?The obvious solution is that you send a test mail to that email address and if your message doesn’t bounce, it is safe to assume* that the address is real.