Top Anti-Spam Add-Ins for Outlook

Stop spam before it hits your inbox

spam email

Westend61/Getty Images 

If you find too much spam in your Outlook Inbox, download one of these spam fighters for Outlook. No matter which one you choose, each one of these anti-spam apps wades through new mail, sorts out the spam automatically, and learns as it goes. Check out these spam solutions before you tackle your Outlook Inbox.

The information in this article applies to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook for Office 365.

of 05


Screenshot of SpamBully
What We Like
  • Easy to install.

  • Learns your habits.

What We Don't Like
  • Not compatible with mobile.

  • Free trial limited to a single email account.

SpamBully lives up to its reputation as the best overall program for standalone mail servers such as Outlook. It works inside Outlook and with free email accounts. It checks attachments, blocks phishing email, and learns your email habits to catch spam before it reaches your inbox.

This easy-to-install product requires a paid subscription, but a 14-day free trial is available.


of 05


Screenshot of SPAMfighter
What We Like
  • Gold Microsoft Partner.

  • Creates whitelists automatically.

What We Don't Like
  • Slightly outdated interface.

  • Sometimes removes whitelisted emails.

SPAMfighter partnered with Microsoft to build this effective anti-spam filter for Outlook. It protects against phishing, identity theft, and other email frauds.

The standard version of the software is free for personal use.

of 05

Spam Reader

Screenshot of Spam Reader
What We Like
  • Works with Exchange, POP3, IMAP, and HTTP accounts.

  • Creates a dedicated folder for detected spam.

What We Don't Like
  • Lets some spam through.

  • Can be glitchy.

Spam Reader is a free anti-spam add-in for Outlook. This add-in uses Bayesian algorithms and user input to detect and redirect as much as 98 percent of spam that comes to your Outlook inbox. It is compatible with Exchange, POP3, IMAP, and HTTP accounts. 

of 05


Screenshot of MailWasher
What We Like
  • Compatible with mobile devices.

  • Intelligently detects spam.

What We Don't Like
  • Sometimes crashes.

  • Learning curve.

MailWasher uses Bayesian spam filters to spot spam and profanities. It also uses a customizable list of blacklisted email senders. Check your email at the server with MailWasher first to block spam before it gets to your computer. It learns as you use the software and allows only good messages in your inbox.

of 05


Screenshot of Spamihilator
What We Like
  • Combines multiple strategies to detect spam.

  • Easy to use.

What We Don't Like
  • Does not offer web-based administration.

  • No recent upgrades.

Spamihilator stands between your Outlook inbox and the internet and examines every incoming message. A set-up wizard makes installation easy. This free filter runs in the background and claims a 98 percent out-of-the-box spam recognition rate. Customize Spamihilator by adding user-defined words and expressions to its spam word list.