Will this help? If you efiled, In the PDF of your TurboTax return, the last page of the federal return should be an "electronic postmark" that shows your name, Social Security number, the date and time that you e-filed the return, and the date that the IRS accepted it.
Don’t know if that will say if you are married. You might need a copy of your 1040. You can get a transcript of your return from the IRS that should say your filing status.
You can order a Transcript from the IRS
Not sure why your insurance thinks a page of your tax return "proves" that you are married. If you filed a joint tax return with your spouse, the first page of your Form 1040 shows that you are filing as married filing jointly. Look at your Filing Status on page 1.
All I can tell you is what they are asking for. The first two pages of my 1040, including the signatures. We e-filed, so there are no hard signatures. So instead of the second page in this case, they want an "e-confirmation page". Their words, not mine.
Still looking for that electronic filing certification page. My old copy doesn't have it and the fresh copy that I just downloaded from TurboTax doesn't have it.
When you e-file a tax return there are no physical signatures. If someone is requesting a "signed" copy then you take out a pen, sign and date it on the line by the words "Sign here" and make them happy. Apparently there are still plenty of people out there who do not understand how e-filing works and they want signatures. You could give them the page that prints with the return that is called the electronic filing certificaton with the "electronic postmark" that shows you e-filed a joint tax return.