Existing users of MailNow! may download the latest update below.

Full installer (78MB) Download

Full installer with required prerequisites and virus pattern. Suitable for first time installation or upgrading from MailNow! 4 or older. No separate download for prerequisites needed.

Minimum installer (25MB) Download

Compact installer without prerequisites and virus pattern. Suitable for upgrading from existing versions of MailNow! 5. Any missing prerequisites are only downloaded when needed.



  1. Webmail: We have disabled a feature in the webmail which could result in the MailNow! service running out of memory. This is the feature that can show embedded images and emails inline (i.e. you don’t have open each attachments, all will be displayed for you). This problem would happen if the email you are viewing contains mails such embedded attachments.
  2. Antispam: We have fixed an issue where the spam database might be updated consistently.
  3. Webmail: We have fixed an issue where an invalid email address might prevent you for loading the inbox page.


You might like to see what other great stuff in MailNow! 5.1.