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Virus Bulletin VBSpam Q4 2025

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Test Lab

Virus Bulletin

Test Title

Virus Bulletin VBSpam Q4 2025

AMTSO Test ID

AMTSO-LS1-TP166

Platform

Email Filters

Vendor

Bitdefender, Coro, Fortinet, N-able, Net at Work, Rspamd, SEPPmail, Sophos, Zoho Mail

Publication date

2025-12-11
More info on tester site

Statement from Test Lab

VBSpam is a continuously running comparative test programme for email security solutions. The test seeks to measure and compare the performance metrics of the publicly tested email security solutions.

AMTSO Standard compliance info

Notification issued

2025-10-10

Notification method

Publicly posted test plan, Contact list notification

Test plan

View test plan

Commencement date

2025-11-01

Participants

1
These Vendors chose to adopt Participant status under the AMTSO Standard, gaining certain guaranteed rights in return for attestations.

“Included” Vendors

9

These Vendors did not chose to adopt Participant status under the AMTSO Standard, but may have engaged with the test lab in other ways.

Commentary dates

CommentaryStart dateEnd date
Phase 1 Commentary2025-10-102025-12-11
Phase 2 Commentary2025-12-112025-12-19

AMTSO Standard compliance status

Confirmed Compliant with AMTSO Standard v1.3Compliance report

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