Alternatives to Sendlayer
Other Transactional email and notifications vendors we measure, sorted by how much they publish that Sendlayer does not. This is a comparison of disclosure, not of features or fitness.
12 shown of 31 that differ from Sendlayer on at least one criterion we measured for both. Public transparency score, not a product or security rating.
Sendlayer has 10 gaps in what we could measure: Data processing agreement, Subprocessor list, Data location stated, Certifications named, Uptime SLA with a figure, HTTPS enforced with HSTS, No third-party tracking before consent, security.txt (RFC 9116), Notice before subprocessors change, Named privacy contact. The column “publishes and Sendlayer does not” is the one that closes them.
| Vendor | Score | Publishes, and Sendlayer does not | Sendlayer publishes, and they do not | |
|---|---|---|---|---|
| Resendresend.com | 83/100 | 8 Data processing agreement, Subprocessor list, Data location stated, +5 | 1 Status page with history | Compare |
| Mailosaurmailosaur.com | 74/100 | 7 Subprocessor list, Data location stated, Certifications named, +4 | nothing | Compare |
| Knockknock.app | 65/100 | 5 Data processing agreement, Subprocessor list, Data location stated, +2 | 1 Status page with history | Compare |
| Mailtrapmailtrap.io | 48/100 | 4 Data processing agreement, Subprocessor list, Notice before subprocessors change, +1 | 1 Status page with history | Compare |
| Novunovu.co | 48/100 | 4 Data processing agreement, Data location stated, Certifications named, +1 | 1 Status page with history | Compare |
| Plunkuseplunk.com | 48/100 | 4 Data processing agreement, Data location stated, Notice before subprocessors change, +1 | 1 Status page with history | Compare |
| Streamgetstream.io | 48/100 | 4 Subprocessor list, Certifications named, HTTPS enforced with HSTS, +1 | nothing | Compare |
| OneSignalonesignal.com | 43/100 | 4 Data processing agreement, HTTPS enforced with HSTS, security.txt (RFC 9116), +1 | 1 Status page with history | Compare |
| Ablyably.com | 39/100 | 4 Uptime SLA with a figure, HTTPS enforced with HSTS, security.txt (RFC 9116), +1 | nothing | Compare |
| Couriercourier.com | 52/100 | 3 Subprocessor list, Data location stated, HTTPS enforced with HSTS | nothing | Compare |
| Bentobentonow.com | 43/100 | 3 Subprocessor list, Data location stated, HTTPS enforced with HSTS | 1 Status page with history | Compare |
| SMTPetersmtpeter.com | 36/100 | 3 Data location stated, HTTPS enforced with HSTS, Named privacy contact | 1 Status page with history | 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.