Manx Telecom says it's aware of a problem with its manx.net email services.
A number of users took to social media earlier to report they couldn't log in or receive emails.
On its support page, the company says it's aware of an issue which may be causing disruption for some users and it's hoping to resolve the matter as quickly as possible.
Earlier this week, it revealed it was transferring the service to another provider, which would charge £65 a year or £6.50 a month from January.
Postal vote applications have to be in soon
Mum launches petition over university support
Bus services north and south face disruption later
Wildlife Trust unveils woodland plans
Deadline looms for by-election nominations
Biker in UK hospital after Mountain crash
Trial event closes roads in Peel and Ramsey
Requisition meeting for Garff voters