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Verify emails are reaching the inbox, not the Spam Folder.

Are you sure your emails aren't getting marked as spam?

Imagine, you think you are running great campaigns, only to find out you are getting marked as spam by numerous spam filters. What would it mean for your business if you were able to diagnose and solve deliverability issues you didn't know you had?

SPAM and blacklist testing is included in our pay-as-you-go
AND our monthly subscription pricing plans.

SPAM Testing

Test your email in 24 of the most popular SPAM filters.
In your final report you'll receive pass/fail feedback in Google Apps, SpamAssasin, Barracuda, and DKIM. Check out a complete list of SPAM filters we support.

Blacklist Testing

Test your sending IP against 74 of the most common blacklist services.
A blacklist is a database of known server IP addresses used by persons or companies who have been flagged for sending spam. Many ESP's allow their customers to upload new mailing lists on a regular basis this makes them vulnerable to blacklisting.

  • What is a Seed List?

    In order to run a truly accurate SPAM report your email must be sent to 24 different email addresses - commonly referred to as a "Seed List".

    For each test you will be provided with a unique Seed List - it is very important that you send your email to every address provided using the same subject line and "from" address.

  • 3 Ways to SPAM Test.

    We offer three different ways for you to send your SPAM test:

    • You send your email to a provided Seed List via your ESP (recommended)
    • Provide your SMTP account information and we can send to the Seed List on your behalf
    • We can send your email to the Seed List via Email on Acid's IP address. (not recommended)

    The pros and cons for each of the above options are explained in more detail when you initiate your test.

  • Why is blacklist testing important?

    Most email service providers (ESP's) allow their customers to upload their own mailing lists. This makes them vulnerable to getting blacklisted and they must be proactive about removing accounts that might adversely affect the reputation of their sending server(s).

    With Email on Acid, you can ensure that your ESP is doing their due diligence because blacklisting can cause a sharp decline in your overall deliverability.

"Needed something quicker and easier than doing it all manually inbox by inbox, device by device, wanted something all in one place. Email on Acid had the perfect product offering for the right price..."

Andy T ~ Pure360
Supported SPAM Filters
AOL
Apple Mail 5
Apple Mail 6
Apple Mail 7
Barracuda
Cloudmark
DKIM
Fastmail
Gmail
GMX
Google Apps
Hushmail
Iron Port
Mail.com
Outlook 2003
Outlook 2007
Outlook 2010
Outlook 2013
Outlook.com
Spam Assassin
SPF
Symantec Cloud
Symantec Messaging Gateway (formerly Brightmail)
Yahoo
Supported Blacklists
ABUSE-CH
AHBL
ANTI-SPAM
AUPADS-DUINV
BARRACUDACENTRAL
CANTV DUL
CBL.ANTI-SPAM.ORG.CN
CBLPLUS.ANTI-SPAM.ORG.CN
CDL
CYMRU-BOGON
DEADBEEF
DNSBL.SORBS.NET
DOB
DRONEBL
DUL.RU
DYNIP
EMAILBASURA
FIVE-TEN-SG
GWEEP-RELAYS
ICM.EDU.PL
ICN
IMP-SPAM
IMP-URIBL
IMP-WORMS
INPS
INTERSERVER
KEMPT
KISARBL
KOREA
KSI
KUNDENSERVER.DE
LASHBACK
MAPS-DUL
MAPS-RSS
MSRBL
MSRBL-IMAGES
MSRBL-PHISH
MSRBL-SPAM
MSRBL-VIRUS
NETHER-OR
NIXSPAM
NJABL
OMRS
ORVEDB
OSRS
PEOPLE.IT
PROBES
RATS
RBL.JP-DYN
RBL.JP-SHORT
RBL.JP-URL
RBL.JP-VIRUS
RDTS
RFC-IGNORANT
RMST.DNSBL.NET.AU
ROT.BLACKHOLE.CANTV.NET
SCI.KUN.NL
SOLID-POOL
SORBS
SORBS-DYNA
SORBS-RELAYS
SORBS.DNSBL.NET.AU
SPAMBLOCK
SPAMCANNIBAL
SPAMCOP
SPAMHAUS
SPAMLOOKUP
SURBL
SURRIEL
TRANSIP-RES
URIBL
VIRBL.BIT.NL
WOODY
WPBL

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