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

MailNow! 6 64Bit
MailNow! 6 32 Bit

Important Notice

Please download this version of MailNow! 6 if your server satisfies the following criteria
1. At-least have 8GB RAM
2. Running a 64-Bit Operating System


MailNow! 6 64Bit installer (291MB) Download

Full installer with required prerequisites and virus patterns. Suitable for first-time installation, upgrading from existing versions of MailNow! 6 or upgrading from MailNow! 5 or older. No separate download for prerequisites needed.

General Notice

Any existing user of MailNow! may download the following installer.


MailNow! 6 32 Bit installer (289MB) Download

Full installer with required prerequisites and virus patterns. Suitable for first-time installation, upgrading from existing versions of MailNow! 6 or upgrading from MailNow! 5 or older. No separate download for prerequisites needed.

Bug Fixes
  • Fixes GMT Time Issue on message read receipt.

  • Fixes spoofing of Calendar Invites response.

  • Fixes logo alignment in the login page.

  • Fixes issue where Missing attachment if Attachment is Related Item Type attachment.

  • Fixes “501 No Access right after turning on ‘Required Sender Authentication For Local Domain Sender’, although SMTP authentication was successful”.

  • Fixes “Corrupted Download while downloading attached XLSX attachment for preview”.


You may download the outlook plugin for MailNow! 6 address book here

You might like to see what other great stuff in MailNow! 6.