I can confirm that, under Portuguese law, you can apply for a D6 visa for family reunification, based on your future spouse’s permanent residency status in Portugal. Her Italian or Argentine nationality is not the deciding factor in this case. What matters is that she holds a valid permanent residence permit and is legally living in Portugal, which makes you eligible to apply as her spouse under the family reunification regime governed by AIMA. Regarding marriage, Portugal generally does not recognize online marriages unless they are officially registered and recognized by the country in which they took place. Since Pakistan does recognize online marriages, and if yours is fully registered with the authorities there, with a computerized NADRA marriage certificate, and the document is translated and properly legalized, it should be accepted by the Portuguese authorities. Please keep in mind that the marriage certificate must be translated into Portuguese by a certified translator. It must also be legalized either through an apostille in Pakistan. As for registering the marriage with the Italian consulate — this is not necessary for the D6 visa process, as you are applying through your spouse’s Portuguese residency, not her EU citizenship. That advice would only apply if you were planning to apply under EU Law, which is not the case here, given that you’ll apply through her residency in Portugal.
