No.
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
While the Constitution is not a living document, the clear original intent is that letters require a warrant based on probable cause, and email is simply a letter that was not written on paper. A warrant is an absolute requirement here, and my level of disgust with the tyrant in our White House would hit the maximum possible level over this if it had not reached that level long ago. Obama is pure evil, and those like him who seek power in our government are not "public servants", they are America's enemies.
Note: My posts here are not private - not letters nor emails nor "papers" in the sense intended by Amendment IV - and they do not have the same level of protection. However, if the thugs in DC want my ip address and my identity, that is private and they need probable cause, and I have been very careful never to give them probable cause (nor would I say anything at all without a lengthy consultation with a lawyer and probably not even then if they came to "question" me based on an unlawful warrant).
Waiting to hear their pathetic argument used for the Second Amendment...”well, the founders never envisioned this kind of technology...”
There is no more “probably cause”
SCOTUS defanged it in 2005. It is now reasonable suspicion.
I always understood that the IRS and other leftist, regulartory agencies were exempt from the Constitution anyhow.