Irish shoppers are expected to spend over €100m tomorrow on Black Friday - that equates to €4m an hour.
Black Friday is the day after the US Thanksgiving holiday which, traditionally, is the biggest shopping day of the year in the US but has recently become a phenomenon in this part of the world.
Much of that spend will be online between now and Cyber Monday - generally the biggest day for e-commerce in the US.
But the IE domain registry - the body responsible for the management and administration of Ireland's official internet address .ie - says many Irish small and medium enterprises will miss out.
Its "IE Digital Health Index" shows that only 35% of SMEs have a website that can process payments online and only two in five can take sales orders online.
As many as one in four Irish SMEs doe not have a website at all, which the registry said was "shocking". Three out of four of these respondents also said they did not intend to build a website, adding that there was "no need" within their industry.
The survey was undertaken in three waves in May 2014, December 2014 and September 2015 and it measured the health of Irish SME's digital presence by looking at the number of "digital assets" - websites, apps and social media accounts - owned by them.
The registry says than only 14% of Irish SMEs plan to conduct any online special offers and promotions for Black Friday and the Christmas season.
Describing this as a digital crisis, it has called for a combined effort from Government, industry organisations and Local Enterprise Offices to get SMEs selling online and capturing more of the €6 billion a year in e-commerce transactions by Irish consumers.
David Curtin, the CEO of IEDR, pointed out that only a tiny amount of that €6 billion is spent in Ireland, with most consumers buying products from online stores in the UK and Europe.
"By 2020, the value of Ireland's digital economy is expected to more than double to 10% of GDP, or €21 billion. Our own SMEs risk being left out of this commercial revolution if investment in their online capabilities remains low," he cautioned.
He said there was a "dire need" for SMEs to get support for web design and e-commerce education initiatives, mentoring services, enterprise funds and improvement of Ireland's broadband infrastructure.
The survey also found that Irish SMEs have increased their use of social media over the months from December 2014 to September 2015. The number of companies with a Facebook presence has grown from 44% to 51%, while Twitter has increased from 15% to 22. The use of LinkedIn has doubled from 8% to 16%.
It also revealed that Irish SMEs are positive about their business with six out of ten expecting to see their revenues increase over the next year.