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Stalwart: what they publish

stalw.art · Email hosting · checked 2026-10-15

39/100EBand E

Rank 3 of 38 in Email hosting, where the median is 17.

Public transparency score, not a product or security rating. Latest check: 2026-10-15. How the score works.

Evidence at a glance

Choose a check to see its source, date and scope.

Not found means not found at the addresses we checked. Not measured means we could not complete the check.

Start a vendor reviewDownload evidence (CSV)

Overview

3 days since the newest dated result, 3 since the oldest. 12 of 12 criteria have a measured result in the last 30 days. Failed checks and undated results are excluded.

Evidence freshness is a statement about our measurement and is kept apart from the transparency score, which is frozen at v1. How good our own measurement is.

Transparency labelsaas-ranking.com

Stalwart

stalw.art · Email hosting

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
E 39of 100 Rank 3 of 38

Published commitments3 of 9 found

Measured behaviour1 of 3 found

Checked 2026-10-15. 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.

Downloads include all checks, source URLs, dates and the snapshot ID for your procurement file. We do not issue badges.

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 Stalwart has no such document.

Where Stalwart sits in Email hosting

  1. A0 0%
  2. B0 0%
  3. C0 0%
  4. D2 5%
  5. E8 21%
  6. F28 74%
38 vendors with a score; 4 more without a score because we could measure too little. Bands have fixed thresholds, see how the score works.

The band of Stalwart is marked. Vendors without a score are the ones where we could measure too few criteria to rank them – a gap on our side, counted separately.

What Stalwart states

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

✗

Subprocessors: the published list

weight 3 of 3

No subprocessor list found.

Checked 7 addresses on 2026-10-15.

Show the 7 addresses we checked
  1. https://stalw.art/legal/subprocessors – reached, no match (HTTP 200)
  2. https://stalw.art/subprocessors – reached, no match (HTTP 404)
  3. https://stalw.art/sub-processors – reached, no match (HTTP 404)
  4. https://stalw.art/legal/sub-processors – reached, no match (HTTP 404)
  5. https://stalw.art/trust/subprocessors – reached, no match (HTTP 404)
  6. https://stalw.art/privacy/subprocessors – reached, no match (HTTP 404)
  7. https://stalw.art/legal/subprocessor-list – reached, no match (HTTP 404)

Is this wrong? Send us the URL

Across the market: Subprocessor list in Email hosting: 0 of 38 companies

✗

Status page with incident history

weight 2 of 3

No public status page found.

Checked 3 addresses on 2026-10-15.

Show the 3 addresses we checked
  1. https://status.stalw.art/ – The name "status.stalw.art" could not be resolved.
  2. https://stalw.art/status – reached, no match (HTTP 404)
  3. https://stalw.art.statuspage.io/ – Could not be fetched: fetch failed.

Is this wrong? Send us the URL

Across the market: Status page with history in Email hosting: 7 of 39 companies

✗

HTTPS enforced with HSTS

weight 2 of 3

No enforced HTTPS with HSTS found.

Checked 2 addresses on 2026-10-15.

Show the 2 addresses we checked
  1. http://stalw.art/ – redirects to https://stalw.art/
  2. https://stalw.art/ – no HSTS header

Is this wrong? Send us the URL

Across the market: HTTPS enforced with HSTS in Email hosting: 23 of 42 companies

✗weight 2 of 3

Third-party requests seen on the first load, before any interaction.

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

    static.cloudflareinsights.com

    Read at https://stalw.art/

Checked 1 address on 2026-10-15.

Show the 1 address we checked
  1. https://stalw.art/ – third-party requests before any interaction: static.cloudflareinsights.com

Is this wrong? Send us the URL

Across the market: No third-party tracking before consent in Email hosting: 15 of 42 companies

✗

Notice before subprocessors change

weight 2 of 3

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

Seen at https://stalw.art/legal/dpa/ · checked 2026-10-15

Show the 8 addresses we checked
  1. https://stalw.art/legal/subprocessors – reached, no match (HTTP 200)
  2. https://stalw.art/subprocessors – reached, no match (HTTP 404)
  3. https://stalw.art/sub-processors – reached, no match (HTTP 404)
  4. https://stalw.art/legal/dpa – found, but behind a sign-in
  5. https://stalw.art/dpa – reached, no match (HTTP 404)
  6. https://stalw.art/legal/data-processing-agreement – reached, no match (HTTP 404)
  7. https://stalw.art/trust/subprocessors – reached, no match (HTTP 404)
  8. https://stalw.art/legal/sub-processors – reached, no match (HTTP 404)

Is this wrong? Send us the URL

Across the market: Notice before subprocessors change in Email hosting: 0 of 38 companies

✗

Certifications named (SOC 2, ISO 27001)

weight 1 of 3

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

Seen at https://stalw.art/legal/security/ · checked 2026-10-15

Show the 6 addresses we checked
  1. https://stalw.art/security – reached, no match (HTTP 404)
  2. https://stalw.art/trust – reached, no match (HTTP 404)
  3. https://stalw.art/trust-center – reached, no match (HTTP 404)
  4. https://stalw.art/compliance – reached, no match (HTTP 404)
  5. https://stalw.art/legal/security – found, but behind a sign-in
  6. https://trust.stalw.art/ – The name "trust.stalw.art" could not be resolved.

Is this wrong? Send us the URL

Across the market: Certifications named in Email hosting: 4 of 39 companies

✗

Uptime SLA with a figure

weight 1 of 3

No uptime figure found.

Checked 6 addresses on 2026-10-15.

Show the 6 addresses we checked
  1. https://stalw.art/legal/sla – reached, no match (HTTP 404)
  2. https://stalw.art/sla – reached, no match (HTTP 404)
  3. https://stalw.art/legal/service-level-agreement – reached, no match (HTTP 404)
  4. https://stalw.art/trust/sla – reached, no match (HTTP 404)
  5. https://stalw.art/uptime – reached, no match (HTTP 404)
  6. https://stalw.art/legal/uptime-sla – reached, no match (HTTP 404)

Is this wrong? Send us the URL

Across the market: Uptime SLA with a figure in Email hosting: 0 of 38 companies

✗

Named privacy contact (DPO or privacy address)

weight 1 of 3

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

Seen at https://stalw.art/legal/privacy/ · checked 2026-10-15

Show the 7 addresses we checked
  1. https://stalw.art/legal/privacy – found, but behind a sign-in
  2. https://stalw.art/privacy – reached, no match (HTTP 404)
  3. https://stalw.art/privacy-policy – reached, no match (HTTP 404)
  4. https://stalw.art/legal/privacy-policy – reached, no match (HTTP 404)
  5. https://stalw.art/legal/privacy-notice – reached, no match (HTTP 404)
  6. https://stalw.art/trust/privacy – reached, no match (HTTP 404)
  7. https://stalw.art/datenschutz – reached, no match (HTTP 404)

Is this wrong? Send us the URL

Across the market: Named privacy contact in Email hosting: 14 of 38 companies

Evidence

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

Published, with a source 4
✓

Data processing agreement (DPA)

weight 3 of 3

Published and readable without a login.

Source: https://stalw.art/legal/dpa/ · checked 2026-10-15

Across the market: Data processing agreement in Email hosting: 2 of 38 companies

✓

Data location: where they say data is hosted

weight 3 of 3

The hosting location is stated on a public page.

  • Locations named next to the hosting wording London, United Kingdom. This does not establish the company’s headquarters.
    Show the 2 exact wordings

    Get Stalwart See pricing 128 City Road London, UK [email protected] Platform Mail Server Collaboration MTA Anti-spam Architecture Integrations Editions Enterprise Community Compare Pricin

    Read at https://stalw.art/legal/privacy/

    Portal and the Support Portal are operated by Stalwart Labs Ltd from infrastructure located in the United Kingdom; we do not use a third-party hosting partner for either portal.

    Read at https://stalw.art/legal/privacy/

Source: https://stalw.art/legal/privacy/ · checked 2026-10-15

Across the market: Data location stated in Email hosting: 6 of 38 companies

✓

Public pricing with figures

weight 2 of 3

Actual numbers on a public page.

Source: https://stalw.art/pricing/ · checked 2026-10-15

Across the market: Public pricing in Email hosting: 11 of 38 companies

✓

security.txt (RFC 9116)

weight 1 of 3

Served at /.well-known/security.txt.

Source: https://stalw.art/.well-known/security.txt · checked 2026-10-15

Across the market: security.txt (RFC 9116) in Email hosting: 15 of 39 companies

History

100 0 2026-10-08: 39 of 1002026-10-15: 39 of 100 2026-10-08 2026-10-15
Score over the last 2 runs we measured Stalwart in: 39 (2026-10-08), 39 (2026-10-15).

Prepare your vendor review

A source is a starting point. Check the product, plan, legal entity and date before treating it as evidence for your purchase. These questions do not change the transparency score.

Stalwart

4 found · 8 not found · 0 not measured across 12 public checks.

12 of 12 criteria have a measured result from the last 30 days. Oldest dated result: 2026-10-15.

Investigate 8 open evidence questions
  1. Subprocessor list

    Which subprocessors apply to our product, what does each process, and in which countries? Please share the current list.

    Inspect this check
  2. Status page with history

    Where can we review incident history for the service we will use, and how do we subscribe to incident updates?

    Inspect this check
  3. Certifications named

    Please share the current certificate or audit report and its scope, covered legal entity, products and validity period.

    Inspect this check
  4. Uptime SLA with a figure

    Which availability commitment applies to our plan? Please include the measurement window, exclusions and credit claim process.

    Inspect this check
  5. HTTPS enforced with HSTS

    How is HTTPS enforced on the product and sign-in domains we will use? Please distinguish those domains from the public website.

    Inspect this check
  6. No third-party tracking before consent

    Which third-party requests occur before a visitor makes a choice, and for what purpose? Please distinguish the public website from the product.

    Inspect this check
  7. Notice before subprocessors change

    How will you notify us before a subprocessor changes, with how much notice, and what response options apply to our contract?

    Inspect this check
  8. Named privacy contact

    Which privacy contact handles requests for our account, and what escalation path should we use?

    Inspect this check

Compare

A shortlist holds up to six vendors across categories and lives entirely in the address of its page: share the link, bookmark it, put it in a ticket. Nothing is stored, so we do not know it exists.