The operator is continuing to direct more agent queries away from its call centre and towards its self-serve tools instead.
Back in April, Jet2 said agents would in future be required to use its Manage My Booking platform for most post-booking changes.
It has now extended the platform's scope to allow agents to amend bookings, hotel reservations, ancillaries and documents themselves, as well as manage assisted travel and promo codes, and advise on terms and conditions.
Agents can now amend passenger details, dates, flights and cancellations online, make amendments to hotel reservations, including board categories and special requests, add or tweak ancillaries such as seats, meals, hold and cabin luggage, and deal with documentation, including travel ID and boarding passes.
Jet2 said the new functionality allows agents "to better self-serve when it comes to costing up amendments, updating bookings and obtaining documents directly".
“Our agency partners tell us how much they value the self-serve options that we have in place for them, because they save time and help partners work much more efficiently," said Jet2holidays' director of travel agent relationships Alan Cross.
"These self-serve improvements have been made in line with agent feedback, so we know they will benefit our agency partners enormously."
In addition, Jet2holidays has also introduced customer service online forms for agents, which it says makes it easier for them to share feedback without having to rely on email.