A passport itself cannot be apostilled by definition as it is already a document specifically designed to be valid outside of the country of issuance.
The only way to “apostille a passport” is to make a notarized copy and then place apostille on it verifying a notary’s signature, just like any other documents’s notarized copy can be apostilled.
Instead of apostille, attestation from the Portuguese embassy is also acceptable.
This is my 3rd renewal of residence card and I have never had to to get my passport apostilled.
Also I was not aware DHL was willing to take passports across borders. Their website specifically states they will not.
No it’s definitely allowed in the US and Portugal, and in my experience plenty of other countries like China and Australia (although I believe India won’t allow any private couriers to ship passports, so it varies by jurisdiction). See info from DHL’s US site below, which makes it clear:
Hi, would you mind sharing the immigration attorney firm name that you used. I’m just starting the process and haven’t found an attorney yet. Thanks in advance for your help.
YEs I agree, I just had to take photo of each page of my passport and send to my lawyer, but have my birth certificate Aposilled and my Police Clearance Certificate Aposilled, never ever had to do this with my passport and I’ve done 5 years