Yes, we do have that capability.  However, it can have an adverse effect on your sending reputation if you persistently “ping” all the email addresses on a list and then do not follow through with an actual email.

There is little benefit to you knowing that an email is “invalid”.  What does invalid mean?  Has the person moved to another job for example?

At Vuture we recommend that you clean your list by sending out the email and then using our Bouncebacks Dashboard to carefully analyse the different bounces for those emails which did not reach the intended recipient.  The Bouncebacks Dashboard will help you to understand why an email did not arrive, and give you a steer as to what you should do about it.  For example, you can sort them by the domain of the recipient which can help identify problems in sending to certain organisations.