Certainly not naively in blueprint. You will have to add this command yourself in C++. However keep in mind that not all people use a email client at all and even more importantly that you will have to write against each OSes API for doing this.
There is no unified solution for Windows, Linux and Mac. You will have to check for each of them and pretty much develop the same feature three times.
If this is possible for you I’d suggest using SMTP directly. You will need the users credentials but you can then send E-Mails directly. That should be the better and easier way if you are not necessarily need this exact feature.