Technicians have been "working around the clock" to fix problems with the Manx.net e-mail system.
Manx Telecom says it believes it's made "significant progress" after issues transferring 30,000 user accounts, and millions of mail items, to a new platform.
It's described the issues as "unforeseen difficulties" and has apologised to customers who've been affected.
Chief technology officer Kevin Paige says the problems started during the migration process:
How will Island remain attractive during MONEYVAL assessment?
How will the Island stay attractive to businesses while being scrutinized by Europe's anti-money laundering body?
Do you know a company director who deserves an award?
Do you know a company director who deserves recognition?
Festive social event for young professionals this week
Locate Isle of Man is hosting a social event this week.
Fewer businesses now optimistic about future
Fewer local businesses are optimistic about the future compared to last year, according to a new government poll.
Financial regulator recruiting for board members
The Financial Services Authority is looking for new board members.
Businesses needed for seaside kiosk
Port Erin Commissioners say they're looking for people with business ideas to rent a beachside shed.
Businesses who wouldn't recommend IOM almost triples in 8 years
Around 20 percent of local companies say they wouldn't recommend the Island as a place to do business.
M&S officially opens new-look Douglas food hall
Percy Pig and Colin the Caterpillar were on hand this morning to help officially open Marks and Spencer's new food hall.
