Users can choose a free account or paid packages, with a 30-day trial of ad-free service before applicable monthly charges begin. The plans provide different levels of email and online storage, alias addresses, and daily sending limits.

Features include webmail, access through IMAP and POP3, and mobile apps for Android and iPhone. The app brings together email, contacts, calendars, and online file storage. Accounts also include spam and virus protection, while security measures include encrypted connections, two-factor authentication, and support for end-to-end email encryption.

The service emphasizes privacy-conscious registration, including pseudonyms and minimal personal information requirements. Paid services can be paid for anonymously. mail.co.uk also highlights environmental practices such as using renewable electricity and planting trees for PlusMail, ProMail, and PowerMail customers. Its offerings are designed to combine practical communication tools, flexible account options, and security features for personal email use.