The loonie was ahead 0.08 of a cent to 91.5 cents US as traders also focused on Friday's release of Canadian employment data for May. Economists expect about 21,000 jobs were created last month after the economy shed 29,000 the previous month.
On Thursday, the ECB announced it was cutting its lending rate to 0.15 per cent from 0.25 per cent.
And in a more drastic step, it is also cutting its overnight deposit rate to minus 0.1 per cent from zero. Charging banks for parking funds with the ECB is an unusual step aimed at pushing banks to lend that money rather than hoard it.
At a news conference, ECB president Mario Draghi says the bank will also offer long-term loans to banks at cheap rates until 2018.
The targeted loans would be charged a fixed rate, meaning that the rate could not rise over the life of the credits, even if the bank raises its benchmark, giving banks confidence that they have cheap funding through to 2018.
Draghi also said the ECB’s policymakers unanimously agreed to consider more unconventional measures to boost inflation if it stays too low.
Investors had been counting on the ECB to take action to save the eurozone region from falling into a deflationary spiral that would choke off growth. Worries about deflation increased earlier this week with the release of data showing that inflation in the eurozone came in at 0.5 per cent in May, down from 0.7 per cent in April.
The latest data also showed that gross domestic product in the eurozone grew by a paltry 0.2 per cent in the first quarter.
Meanwhile, traders also looked ahead to another major economic event: the release Friday of the U.S. government's employment report for May. Economists have forecast that about 219,000 jobs were created during May following a much stronger than expected 288,000 gain in April.
Doubts about reaching that figure were raised Wednesday after payroll firm ADP reported that the U.S. private sector created 179,000 jobs during May, the fewest number in four months.
Prices were mixed on commodity markets with June crude in New York down 16 cents to US$102.48 a barrel.
July copper was unchanged at US$3.09 a pound.
August bullion gained momentum after the ECB announcement, rising $9 to US$1,253.30 an ounce. Traders think that the ECB might launch its own version of quantitative easing to stimulate the economy, which involves buying assets such as bonds.