Transparency alternatives to Warmbox
Other Email marketing vendors we measure, sorted by how much they publish that Warmbox does not. This is a comparison of disclosure, not of features or fitness.
12 shown of 26 that differ from Warmbox on at least one criterion we measured for both. Public transparency score, not a product or security rating.
Warmbox has 10 gaps in what we could measure: Data processing agreement, Subprocessor list, Data location stated, Status page with history, Certifications named, Uptime SLA with a figure, No third-party tracking before consent, security.txt (RFC 9116), Notice before subprocessors change, Named privacy contact. The column “publishes and Warmbox does not” is the one that closes them.
| Vendor | Score | Publishes, and Warmbox does not | Warmbox publishes, and they do not | |
|---|---|---|---|---|
| Mailgunmailgun.com | 83/100 | 8 Data processing agreement, Data location stated, Status page with history, +5 | nothing | Compare |
| ActiveCampaignactivecampaign.com | 65/100 | 7 Data processing agreement, Subprocessor list, Status page with history, +4 | 1 Public pricing | Compare |
| Customer.iocustomer.io | 78/100 | 6 Data processing agreement, Subprocessor list, Data location stated, +3 | nothing | Compare |
| Klaviyoklaviyo.com | 65/100 | 5 Data processing agreement, Subprocessor list, Status page with history, +2 | nothing | Compare |
| Buttondownbuttondown.com | 61/100 | 5 Data processing agreement, Subprocessor list, security.txt (RFC 9116), +2 | nothing | Compare |
| Mailchimpmailchimp.com | 57/100 | 5 Data processing agreement, Subprocessor list, Data location stated, +2 | 1 HTTPS enforced with HSTS | Compare |
| Omnisendomnisend.com | 57/100 | 5 Data processing agreement, Status page with history, security.txt (RFC 9116), +2 | nothing | Compare |
| CleverReachcleverreach.com | 48/100 | 5 Data location stated, Status page with history, No third-party tracking before consent, +2 | 1 HTTPS enforced with HSTS | Compare |
| Kitkit.com | 48/100 | 4 Data processing agreement, Data location stated, Certifications named, +1 | 1 HTTPS enforced with HSTS | Compare |
| Emailableemailable.com | 48/100 | 3 Data processing agreement, Status page with history, Notice before subprocessors change | nothing | Compare |
| Postmarkpostmarkapp.com | 43/100 | 3 Data processing agreement, Notice before subprocessors change, Named privacy contact | nothing | Compare |
| Elastic Emailelasticemail.com | 35/100 | 3 Data location stated, Status page with history, Named privacy contact | 1 HTTPS enforced with HSTS | Compare |
Only criteria we could measure for both are counted. Where we could measure one and not the other, the row is silent: that would be a statement about our measurement, not about either vendor. Every single result with its source is on the two profiles.