Alternatives to Flowmailer
Other Transactional email and notifications vendors we measure, sorted by how much they publish that Flowmailer does not. This is a comparison of disclosure, not of features or fitness.
12 shown of 21 that differ from Flowmailer on at least one criterion we measured for both. Public transparency score, not a product or security rating.
Flowmailer has 12 gaps in what we could measure: Data processing agreement, Subprocessor list, Data location stated, Status page with history, Public pricing, 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 Flowmailer does not” is the one that closes them.
| Vendor | Score | Publishes, and Flowmailer does not | Flowmailer publishes, and they do not | |
|---|---|---|---|---|
| Resendresend.com | 83/100 | 9 Data processing agreement, Subprocessor list, Data location stated, +6 | nothing | Compare |
| Mailosaurmailosaur.com | 74/100 | 9 Subprocessor list, Data location stated, Status page with history, +6 | nothing | Compare |
| Knockknock.app | 65/100 | 6 Data processing agreement, Subprocessor list, Data location stated, +3 | nothing | Compare |
| Streamgetstream.io | 48/100 | 6 Subprocessor list, Status page with history, Public pricing, +3 | nothing | Compare |
| Ablyably.com | 39/100 | 6 Status page with history, Public pricing, Uptime SLA with a figure, +3 | nothing | Compare |
| Couriercourier.com | 52/100 | 5 Subprocessor list, Data location stated, Status page with history, +2 | nothing | Compare |
| Mailtrapmailtrap.io | 48/100 | 5 Data processing agreement, Subprocessor list, Public pricing, +2 | nothing | Compare |
| Novunovu.co | 48/100 | 5 Data processing agreement, Data location stated, Public pricing, +2 | nothing | Compare |
| Plunkuseplunk.com | 48/100 | 5 Data processing agreement, Data location stated, Public pricing, +2 | nothing | Compare |
| ClickSendclicksend.com | 35/100 | 5 Status page with history, Public pricing, Certifications named, +2 | nothing | Compare |
| Bentobentonow.com | 43/100 | 4 Subprocessor list, Data location stated, Public pricing, +1 | nothing | Compare |
| Batchbatch.com | 30/100 | 3 Data location stated, Status page with history, HTTPS enforced with HSTS | nothing | 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.