An Acknowledgment of Receipt (AOR) is an official letter that IRCC sends you confirming they have received your application and will start processing it. Aor is an official letter that the ircc sends you confirming they have received your application and will start processing it.An Acknowledgment of Receipt (AOR) serves as an official confirmation from IRCC that they have successfully received your application. If we start processing your application, we'll send you an acknowledgement of receipt letter or email with an application number. The answer generally is "no" — Notary commissions are not transferable between states. We cannot acknowledge receipt of submissions. We don't publish poetry, anonymous or open letters. Minister of Justice and Attorney General of Canada, Ottawa,.Ont.,. Canada.