SaaS Ranking

Subprocessor list in Email marketing

Naming the actual subprocessors is what turns a privacy promise into something you can check.

6 of 34 companies we measured here publish it, that is 18%. Last checked 2026-10-16.

18% here against 7% across every category we measure. Email marketing sits above the overall share for this criterion.

This page counts companies, not product entries: a company with two products in this category is one company here and two rows below.

Back to Subprocessor list across all categories, or to Email marketing.

The evidence at a glance
  • Found6
  • Not found at checked addresses28
  • Not measured3

37 companies in total. Unmeasured companies are excluded from the published share.

Published

The actual list is published, not just a promise to keep one.

VendorWhat we found
ActiveCampaign https://www.activecampaign.com/legal/subprocessorsChecked
Buttondown https://buttondown.com/legal/subprocessorsChecked
Customer.io https://customer.io/legal/sub-processorsChecked
EmailOctopus https://emailoctopus.com/legal/subprocessorsChecked
Klaviyo https://www.klaviyo.com/legal/subprocessorsChecked
Mailchimp https://mailchimp.com/legal/subprocessors/Checked
No subprocessor list found.

We reached at least one address for each of these vendors and none of them carried it. That is what we found at the addresses we checked, on the date we checked them, and not a statement about what the vendor has.

VendorWhat we found
AWeber 7 addresses checkedChecked
Benchmark Email 7 addresses checkedChecked
Brevo 7 addresses checkedChecked
Brick Street CONNECT 7 addresses checkedChecked
Campaign Monitor 7 addresses checkedChecked
CleverReach 7 addresses checkedChecked
Cloudy 7 addresses checkedChecked
Elastic Email 7 addresses checkedChecked
Emailable 7 addresses checkedChecked
Emailchef 7 addresses checkedChecked
Flodesk 7 addresses checkedChecked
inwise 7 addresses checkedChecked
Inxmail 7 addresses checkedChecked
Kit 7 addresses checkedChecked
MailBluster 7 addresses checkedChecked
Mailcoach 7 addresses checkedChecked
MailerLite 7 addresses checkedChecked
Mailgun 7 addresses checkedChecked
Mailmodo 7 addresses checkedChecked
MailPoet 7 addresses checkedChecked
Omnisend 7 addresses checkedChecked
Pinpointe 7 addresses checkedChecked
Postmark 7 addresses checkedChecked
Rapidmail 7 addresses checkedChecked
Sender 7 addresses checkedChecked
SendFox 7 addresses checkedChecked
Substack 7 addresses checkedChecked
Warmbox 7 addresses checkedChecked
Not measured

We could not look at these, or their robots.txt asks us not to. That says something about our measurement, not about them, and they are left out of the percentage above.

VendorWhat we found
Constant Contact The vendor’s robots.txt excludes us from at least one of these addresses, so this was not measured.Checked
Mailjet This vendor was not measured because our run stopped waiting for it.Checked
Moosend This vendor was not measured because our run stopped waiting for it.Checked

Other criteria in Email marketing

Subprocessor list in related categories

Found something we missed? Tell us. A correction moves that vendor into our next nightly run. That run reads the same fixed addresses we check for every vendor, not the address you send.