Top Email Security Software for Email Attachment Protection

Between them, the 10 email security software on this page cover anti spam (9), anti virus (8), Whitelisting/Blacklisting (8) and Reporting/Analytics (8). 10 of them have written a profile you can read before you get in touch.

1. 1

   

   Clean Mailbox

   Anti Spam · Anti Virus · Reporting/Analytics

   Clean Mailbox is an email filtering gateway delivered as a service.

   Write a review

   Why #1: No major incidents in 90 days (status page)

   Not yet on record: client reviews, vetting.

2. 2

   

   MailsDaddy PST to Office 365

   Anti Spam · Encryption

   Our MailsDaddy NSF to PST Converter tool will help you export your NSF data into PST format.

   Write a review

   Why #2: 24/7 support — as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   ProtonMail

   Anti Spam · Anti Virus · Reporting/Analytics

   ProtonMail is an encrypted email provider. Its stated mission is to protect privacy by making end-to-end encryption simple enough for anyone, and it describes itself as the world's…

   Write a review

   Why #3: Launched 2014 — as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

4. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
5. –

   

   Secure Mail Gateway

   Allow / Block List · Anti Spam · Anti Virus

   Secure Mail Gateway is an anti-spam product that screens a company's incoming email. It is meant to keep ransomware and other advanced threats from arriving in staff inboxes.

   Write a review
6. –

   

   Cofense PhishMe

   Policy Management · Reporting/Analytics · Whitelisting/Blacklisting

   Cofense PhishMe is a security awareness product focused on phishing.

   Write a review
7. –

   

   OnDMARC

   Anti Spam · Anti Virus · Policy Management

   OnDMARC is a product from Red Sift, a cloud cybersecurity platform.

   Write a review
8. –

   

   Spambrella

   Allow / Block List · Anti Spam · Anti Virus

   Spambrella is a worldwide software-as-a-service provider of email security.

   Write a review
9. –

   

   Cisco Email Security

   Anti Spam · Anti Virus · Reporting/Analytics

   Cisco Email Security is an email protection product from Cisco. It is designed for Office 365 and helps businesses deal with the threats that arrive by email.

   Write a review
10. –

    

    GFI MailEssentials

    Allow / Block List · Anti Spam · Anti Virus

    GFI Archiver, is a business archiving solution for your emails, files and calendar entries. I's easy to install and setup and requires minimal administrative effort.

    Write a review
11. –

    

    SonicWall Email Security

    Anti Spam · Anti Virus · Policy Management

    SonicWall Email Security is part of the SonicWall cybersecurity range, which covers network, endpoint and cloud protection.

    Write a review

Articles

Latest insights

The newest guides and analysis from TrustList Insights.

All articles

Invoice Management

5 Oct 2026 · TrustList Editorial

Nine e-invoicing and tax-system deadlines in four days of news, and none of them in the EU or the US

Our own count: nine e-invoicing and tax-system changes published 2 to 5 October from seven countries, none in the EU or US. Median warning…

Nigeria

5 Oct 2026 · TrustList Editorial

Nigeria: NITDA National AI Innovation Challenge for N-ATLAS builders closes applications on 12 October 2026

Nigeria's digital economy ministry, through NITDA's NCAIR, takes applications until 12 October 2026 for working solutions built on the…

Spain

5 Oct 2026 · TrustList Editorial

Spain: Red.es opens a 40 million euro call for AI use cases aimed at SMEs and startups, open until about 10 November 2026

Red.es has invited associations and technology centres to build AI use cases that SMEs and startups can reuse. Budget EUR 40 million, up to…