AuthSMTP Due Diligence
Run due diligence on AuthSMTP: check compliance and get alerts when suppliers change.
United Kingdom · www.authsmtp.com · 13 vendors
AuthSMTP is an outgoing SMTP email service that provides email deliverability solutions for e-commerce websites, mailing lists, and email applications. It enables users to send high volumes of email reliably and securely, offering features like instant setup, flexible pricing, and responsive support. The service is designed for performance and availability, utilizing high-performance and redundant systems.
Resilience scores
- Digital Sovereignty: 31
- Digital Resilience: 5
- Financial Resilience: 6
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- and 10 more
Services catalogue
3 services in catalogue across 2 categories; runs on 13 sub-vendors.
- AuthSMTP
- Personal Data Processing
- SMTP Relay Service
Insights
Last updated 2026-07-19 · revision 12
13 direct vendors, 145 subvendors
Direct vendors by controlling owner country (sample)
- India: 2
- United Kingdom: 4
- Germany: 1
Subvendors by controlling owner country (sample)
- India: 1
- Belgium: 1
- Norway: 2
Compliance
6 in-scope frameworks identified; showing 3.
ISO 27001 (source) — No public evidence
Evidence: https://www.authsmtp.com/features.php, https://www.authsmtp.com/documentation/gdpr-statement.html, https://sealserver.trustwave.com/cert.php?customerId=6403d31bfaee4647a897d2c899d6a9e4&size=105x54&style=invert
GDPR (source) — Evidence found
Evidence: https://www.authsmtp.com/documentation/gdpr-statement.html, https://www.authsmtp.com/documentation/privacy-policy.html, https://www.authsmtp.com/documentation/service-privacy-policy.html, https://www.authsmtp.com/documentation/data-processing-addendum.html, https://www.authsmtp.com/documentation/data-retention-policy.html, https://www.authsmtp.com/documentation/data-subject-access-request.html, https://www.authsmtp.com/documentation/data-subject-deletion-request.html, https://ico.org.uk/ESDWebPages/Entry/Z200704X
UK NIS Regulations 2018 — No public evidence
Evidence: https://www.legislation.gov.uk/uksi/2018/506/contents/made, https://ico.org.uk/for-organisations/the-guide-to-nis/, https://www.authsmtp.com/documentation/gdpr-statement.html
Financials
Three-year financials
- null:
Financial Resilience Score: 6/10
AuthSMTP, operated by GetOnline Ltd, demonstrates strong qualitative financial resilience through longevity (28+ years of continuous trading since 1997, with AuthSMTP running since 2003) and a subscription-based recurring revenue model that provides predictable cash flow. The business appears to be organically funded and bootstrapped, with no evidence of external venture capital, acquisitions, or debt-driven expansion, suggesting disciplined cash-flow-financed growth. Low capital intensity of the SMTP relay business model and diversified product mix (domains, hosting, email, AuthSMTP) further support resilience. However, the score is moderated by significant risks. As a small UK private company filing abridged accounts, there is minimal public financial disclosure—no revenue, EBIT, or profitability data is available, limiting external visibility. The company competes against hyperscale, well-funded competitors (SendGrid/Twilio, Mailgun, Amazon SES, Postmark, Brevo, Mailjet) with superior infrastructure, APIs, and pricing at scale. Small-scale operations limit investment capacity in AI-driven deliverability, DMARC/BIMI compliance, and geo-redundant infrastructure. Regulatory changes such as Google/Yahoo bulk-sender rules (2024) raise compliance costs disproportionately for smaller providers. Overall, resilience is supported by longevity and recurring revenue, but competitive positioning is the primary long-run risk.
Key strengths: 28+ years of continuous trading (since 1997), 22+ years of AuthSMTP operation (since 2003), Subscription-based recurring revenue model, Low capital intensity of SMTP relay business, Diversified product mix (AuthSMTP, domains, hosting, email), Global customer base with multi-currency pricing (USD, GBP, EUR), Organic, bootstrapped, cash-flow-financed growth
Risk factors: Intense competition from hyperscale providers (SendGrid, Mailgun, Amazon SES, Postmark), Small-scale operator with limited investment capacity, Key-person / founder concentration risk, Regulatory pressure from Google/Yahoo bulk-sender rules (2024) and DMARC/BIMI, Opacity due to abridged accounts filing (small company exemption), Limited ability to invest in AI-driven deliverability and geo-redundant infrastructure
Revenue by geography
- United Kingdom: 0%
- International (USD/EUR markets): 0%
Revenue by product/service
- Web hosting: 0%
- Email hosting: 0%
- Domain registration: 0%
- AuthSMTP (SMTP relay): 0%
- Custom high-volume email / e-commerce solutions: 0%
Workforce by country
- United Kingdom: 0
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