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

Blacklist Testing

Test your sending IP against 73 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.

"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 4
Apple Mail 5
Apple Mail 6
Barracuda
Cloudmark
DKIM
Fastmail
Gmail
GMX
Google Apps
Hushmail
Iron Port
Mail.com
Outlook 2003
Outlook 2007
Outlook 2010
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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