There are more areas and players in the email marketing space than you might expect. Think for example of agile email specialists, append and validation services, blacklist operators, certification bodies, agencies, competitive intelligence and customer intelligence suites, deliverability services, design, testing and rendering tools etc.
Here’s just a overview to give you a quick idea. As the world has alone hundreds of email service providers, it’s without any claim to completeness:
- AgilOne
- RetentionScience
- Custora
- FastStats
- SeeWhy
- RichRelevance
- Prudsys
- epoq
- Avari
- KRYD
- Windsor Circle
- Movable Ink
- LiveIntent
- Realtime Email
- Kickdynamic
- Realtime Personalization
- Email on Acid
- Litmus
- Return Path
- Previewmyemail
- eDataSource
- 250ok
- GreenArrow
- Send Forensics
- LiveClicker
- trustedDialog
- CSA
- DDV
- Bundesgerichtshof
- EuGH
- GMX
- Web.de
- Gmail
- IBM Verse
- Inbox by Gmail
- optivo
- Amazon SES
- MailChimp
- STYLECampaign
- rabbit eMarketing
- E2ma
- Gigya
- Towerd@ta
- FreshAddress
- BriteVerify
- persado
- audiencepoint
- Touchstone
- Phrasee
- Spamhaus
- Spamcop
- ScratchIt
- eyequant
- InkBrush
- BeeFree
- CineGIF
- ImageWIZZ
- 8Seconds
Your missing all of the major enterprise ESP’s in that picture?
Yes, I did that on purpose. The ESPs are kinda trivial and they would have bloated the chart. I mean, which ones are the “major” ones? I found it more interesting to focus on the borderlands.