3 has reassured customers that delivery of its mobile broadband products will be unaffected by the postal strike.
Mooted industrial action by Royal Mail employees is set to re-commence this week unless last-minute talks yield an agreement with postal unions.
Up to 120,000 workers are expected to down tools for three days and will not start work again until Sunday.
However, to counter the problem should it arise, 3 has contracted the services of a private courier service to ensure that customers receive their orders within the allotted time scale.
Demand for 3 products is expected to be especially strong from hereon in, especially in the case of the MiFi which is being tipped by many retail insiders as one of the must-have gadgets for Christmas.
Available now, the MiFi is free for 3 customers when they sign up for an 18-month contract at £12 per month.
This entitles them to a broadband connection speed of up to 3.6Mb and a monthly download limit of 1GB.