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Mailosaur

mailosaur.com · Transactional email and notifications · checked 2026-09-04

74/100BBand B

Rank 2 of 24 in Transactional email and notifications, where the median is 28.

We measured 12 of 12 criteria for Mailosaur on 2026-09-04. We found 9 with a source and did not find 3 at the addresses we checked. That is a transparency score of 74 out of 100, band B.

Overview

Transparency labelsaas-ranking.com

Mailosaur

mailosaur.com · Transactional email and notifications

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
B 74of 100 Rank 2 of 24

Published commitments8 of 9 found

Measured behaviour1 of 3 found

Checked 2026-09-04. Every line links the page we found it on. A cross means we found nothing at the addresses we checked, not that the vendor has no such document. A transparency score, not a product rating.

We do not issue badges: a badge is the first step towards a paid placement, and there is none here. The SVG is a document with the date in it, for your own files.

The label is the whole measurement in one object: every criterion with its weight, the band, and the date. Public transparency score, not a product or security rating.

Every line in it links the page we found the result on, or lists the addresses we checked. A cross means we found nothing there, not that Mailosaur has no such document.

What they state

The exact figures and names we read off the pages linked below, with the sentence they stand in. This is what they publish, not what we verified about their systems.

Gaps, heaviest first

✗

Data processing agreement

weight 3 of 3

We found this behind a sign-in, so it is not published openly.

Seen at https://mailosaur.com/legal/privacy · checked 2026-09-04

Show the 8 addresses we checked
  1. https://mailosaur.com/legal/dpa – reached, no match (HTTP 404)
  2. https://mailosaur.com/dpa – reached, no match (HTTP 404)
  3. https://mailosaur.com/legal/data-processing-agreement – reached, no match (HTTP 404)
  4. https://mailosaur.com/data-processing-agreement – reached, no match (HTTP 404)
  5. https://mailosaur.com/legal/data-processing-addendum – reached, no match (HTTP 404)
  6. https://mailosaur.com/legal/gdpr – reached, no match (HTTP 404)
  7. https://mailosaur.com/trust/dpa – reached, no match (HTTP 404)
  8. https://mailosaur.com/privacy/dpa – found, but behind a sign-in

Is this wrong? Send us the URL

✗

No third-party tracking before consent

weight 2 of 3

No consent-free first load found.

  • Third-party hosts we saw on the first load 1 statuspage.io.
    Show the exact wording

    77ny65ssgfhb.statuspage.io

    Read at https://mailosaur.com/

Checked 1 address on 2026-09-04.

Show the 1 address we checked
  1. https://mailosaur.com/ – third-party requests before any interaction: 77ny65ssgfhb.statuspage.io

Is this wrong? Send us the URL

✗

security.txt (RFC 9116)

weight 1 of 3

No security.txt found.

Checked 1 address on 2026-09-04.

Show the 1 address we checked
  1. https://mailosaur.com/.well-known/security.txt – reached, no match (HTTP 404)

Is this wrong? Send us the URL

Evidence

The full source lists sit behind these two groups, so that the answer above stays readable.

Published, with a source 9
✓

Subprocessor list

weight 3 of 3

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

Source: https://mailosaur.com/legal/subprocessors · checked 2026-09-04

✓

Data location stated

weight 3 of 3

The hosting location is stated on a public page.

  • Locations named next to the hosting wording European Union, United Kingdom.
    Show the 2 exact wordings

    and environmental controls Trusted by the world’s largest organizations Secure data protection Our data centers Our servers are hosted with Google Cloud Platform in data centers in the EU and the Unit...

    Read at https://mailosaur.com/security

    and environmental controls Trusted by the world’s largest organizations Secure data protection Our data centers Our servers are hosted with Google Cloud Platform in data centers in the EU and the Unit...

    Read at https://mailosaur.com/security

Source: https://mailosaur.com/security · checked 2026-09-04

✓

Status page with history

weight 2 of 3

A public status page with incident history.

Source: https://status.mailosaur.com/ · checked 2026-09-04

✓

Public pricing

weight 2 of 3

Actual numbers on a public page.

Source: https://mailosaur.com/pricing · checked 2026-09-04

✓

HTTPS enforced with HSTS

weight 2 of 3

HTTP redirects to HTTPS and the HSTS header is set.

  • HSTS max-age 31536000 seconds (365 days).
    Show the exact wording

    max-age=31536000; includeSubdomains; preload

    Read at https://mailosaur.com/
  • HSTS options includeSubDomains, preload.
    Show the 2 exact wordings

    max-age=31536000; includeSubdomains; preload

    Read at https://mailosaur.com/

    max-age=31536000; includeSubdomains; preload

    Read at https://mailosaur.com/

Source: https://mailosaur.com/ · checked 2026-09-04

✓

Notice before subprocessors change

weight 2 of 3

The vendor commits publicly to giving notice before the list changes.

Source: https://mailosaur.com/legal/subprocessors · checked 2026-09-04

✓

Certifications named

weight 1 of 3

SOC 2 or ISO 27001 named on a public page.

  • Named on that page ISO/IEC 27001, PCI DSS.
    Show the 2 exact wordings

    GDPR, Data Protection Act, CCPA ISO27001:2022 certified PCI DSS compliant Adhering to cloud security assessments We are completely transpare

    Read at https://mailosaur.com/security

    GDPR, Data Protection Act, CCPA ISO27001:2022 certified PCI DSS compliant Adhering to cloud security assessments We are completely transparent when it comes to sec

    Read at https://mailosaur.com/security

Source: https://mailosaur.com/security · checked 2026-09-04

✓

Uptime SLA with a figure

weight 1 of 3

An availability commitment with a figure.

  • Highest uptime figure on that page 99.9 %.
    Show the exact wording

    Uptime & Response/Resolution Time Guarantee Mailosaur agrees to maintain at least 99.9% Uptime for the Service.

    Read at https://mailosaur.com/legal/enterprise-sla

Source: https://mailosaur.com/legal/enterprise-sla · checked 2026-09-04

✓

Named privacy contact

weight 1 of 3

A data protection officer or a dedicated privacy address is named.

Source: https://mailosaur.com/legal/privacy · checked 2026-09-04

History

Not enough completed runs yet to draw a line. The next runs fill this in.

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