ShieldMarc vs PowerDMARC
Low entry price versus flat multi-domain pricing: which model fits a UK team.
ShieldMarc is a UK-owned, EU-hosted alternative to PowerDMARC for DMARC monitoring, with flat pricing at £0, £49 and £99 per month (annual) instead of PowerDMARC's volume-tiered Basic plan and custom-quote Enterprise, API and Partner plans. PowerDMARC is a credible, fast-growing platform with a genuinely low entry price and a broad hosted-services suite, so this is a real contest. Where ShieldMarc wins is domains per pound (25 on Professional versus 5 on Basic), everything included on paid tiers with no add-on price list, broader monitoring (SSL, DNS, uptime, lookalike), and a UK-owned, EU-hosted default with no US CLOUD Act exposure. Figures below are from PowerDMARC's published pricing page, verified June 2026. PowerDMARC publishes in USD, converted to GBP at approximately £1 = $1.25; verify directly at powerdmarc.com/power-dmarc-pricing-policy/.
25 domains flat vs 5 domains then a quote
PowerDMARC Basic caps at 5 active domains and 2 users, and extra domains have no published price: their own FAQ says contact sales. Enterprise, API and Partner plans are all custom quote. ShieldMarc publishes everything: Professional is £49/mo annual for 25 domains and 1M messages, MSP is £99/mo for 100 domain slots and 5M messages, and expansion buckets are £39.99/mo each.
Included, not an add-on
On PowerDMARC Basic, hosted SPF (PowerSPF), phone support, email support, managed services and one-time record setup are all listed as paid add-ons, with hosted DKIM and API access behind custom-quote tiers. ShieldMarc paid plans include SPF flattening, SSL, DNS, uptime and lookalike monitoring, scheduled PDF reports and ticket support with no add-on price list.
UK owned, EU hosted by default
PowerDMARC is owned and operated by MENAINFOSEC, Inc., a US corporation (Delaware governing law per its own terms), hosted on AWS with no published data-residency options, so the US CLOUD Act plausibly applies to customer data it holds. ShieldMarc is UK owned with EU hosting by default and UK hosting available on request.
Pricing and plan limits (verified June 2026)
| Feature | PowerDMARC | ShieldMarc |
|---|---|---|
| Free tier | Free: 1 active domain (personal domains only), 10,000 compliant emails/mo, 1 user, 10-day data history | Starter: 1 domain, 10,000 messages/mo, 1 year retention, 20 free tools, business domains welcome |
| Lowest paid entry price PowerDMARC genuinely wins at the very low end | Basic from ~£6.40/mo ($8, 10,001-50,000 compliant emails/mo; ~£5.14/mo billed yearly) | Professional: £49/mo annual. ShieldMarc has no low-volume paid tier |
| Volume step-ups within the first paid tier | Basic steps from ~£12 to ~£36 to ~£96/mo (monthly) as volume crosses the 100k and 200k compliant-email boundaries; vendor states an overall $8-$250 (~£6.40-£200) monthly range | None: 1,000,000 messages/mo included flat at £49/mo annual; MSP includes 5,000,000 at £99/mo |
| Cost at 1M messages/month | Basic 500,001-2,000,000 tier: ~£160/mo billed yearly ($200; the monthly figure is not clearly published) | Professional: £49/mo annual, 1M messages included |
| Domains on first paid tier | 5 active domains; extra domains have no published price (contact sales, per their own FAQ) | 25 domains (~£1.96/domain/mo) |
| Users on first paid tier | 2 platform users | 5 users on Professional, unlimited on MSP |
| Data history | 10 days on Free, 1 year on Basic (including annual plans) | 1 year on every plan, including free |
| What requires a custom quote | Enterprise, API and Partner plans, plus any Basic domain expansion beyond 5 | Only compliance and hosting specifics (formalised SLA, regional hardware hosting, EU-only AI routing). Standard scale stays on published MSP + £39.99/mo expansion buckets |
| Billing basis Both platforms get this right | Only DMARC-compliant email counts; spoofed mail is free | Only authenticated messages count; spoofed mail is free |
| Free trial on paid plans | 15 days, no credit card, no contract | 30 days, no credit card, cancel anytime |
Features and depth
| Feature | PowerDMARC | ShieldMarc |
|---|---|---|
| Analysis engine PowerDMARC has a real AI suite, but most of it is gated to higher tiers | AI Agent on plan cards; AI ChatBot, Anomaly Advisor, Policy Advisor and MCP server gated to higher tiers per their comparison table | Proprietary threat model on every plan; Claude AI reasoning on all paid tiers, on demand only |
| Hosted SPF, DKIM and BIMI | Yes: PowerSPF flattening and macros (paid add-on on Basic), hosted BIMI from Free including VMC certificate sales, hosted DKIM at Enterprise only | Not today: SPF flattener included on paid tiers, Dynamic SPF on the roadmap; no hosted BIMI |
| MTA-STS and TLS-RPT | Hosted MTA-STS and TLS-RPT included from Basic | Monitored (not hosted) on paid tiers |
| Lookalike domain scanning | Enterprise/Partner tiers only (launched early 2026), plus a free one-off checker tool | Included on all plans, monitored continuously |
| SSL expiry, uptime, DNSSEC, CAA and domain expiry monitoring | No continuous uptime or SSL-expiry monitoring product; DNS timeline, reputation monitoring and free one-off checkers are the closest features | All included on paid tiers, in one dashboard |
| Support on first paid tier | Email and phone support both listed as paid add-ons on Basic; SLA at Enterprise only | Ticket support included on every plan |
| Brand TLD grouping (MSP) | Not advertised | TLD variants count as one slot |
| Platform languages | 11+ languages | English |
Data, hosting and privacy
| Feature | PowerDMARC | ShieldMarc |
|---|---|---|
| Company base | US corporation (MENAINFOSEC, Inc.), Delaware governing law per its own terms; offices in the US, Armenia, UAE, Oman and Qatar | UK owned and run |
| Default hosting and data residency | AWS (region not disclosed); no published data-residency or regional hosting options | EU hosted, UK hosted on request |
| Subject to US CLOUD Act | Plausibly yes: the operating company is a US (Delaware) corporation, so the CLOUD Act plausibly applies to customer data it holds | No (UK based, EU hosted) |
| Third-party certifications | SOC 2 Type 1 and 2, SOC 3, ISO/IEC 27001:2022 (vendor-stated), plus GDPR, CCPA and PCI-DSS statements | Cyber Essentials, then SOC 2/ISO 27001 on the roadmap; certification-grade controls documented on our Trust page |
| UK-specific assurance | No Cyber Essentials certification published; no published UK entity | UK company; Cyber Essentials is the first attestation on our roadmap |
| PII stored | Standard SaaS profile; RUF PGP encryption with customer-owned keys and a bring-your-own-key option offered at Enterprise | Minimal by design: account emails, audit log, rare RUF headers |
Conclusion
Where ShieldMarc has an edge
- Flat published pricing across the whole range: 25 domains and 1M messages for £49/mo annual, 100 domain slots and 5M messages for £99/mo, expansion buckets at £39.99/mo. PowerDMARC's Basic caps at 5 domains with unpublished extra-domain pricing, and Enterprise, API and Partner are all custom quote.
- Everything included on paid tiers: PowerDMARC lists hosted SPF, phone support, email support, managed services and one-time record setup as paid add-ons on Basic.
- Broader monitoring in one dashboard: SSL expiry, uptime, DNS, DNSSEC, MTA-STS, TLS-RPT, CAA, domain expiry and lookalike. PowerDMARC has no continuous uptime or SSL-expiry monitoring product.
- Lookalike domain scanning on all plans; PowerDMARC gates it to Enterprise/Partner tiers.
- 1 year of data retention on every plan including free; PowerDMARC's free tier keeps 10 days and Basic caps at 1 year.
- Paid-plan AI analysis combines our proprietary threat model with a frontier Anthropic Claude model, on demand only, from the first paid tier.
- UK owned, EU hosted by default, UK hosting on request. No US CLOUD Act exposure, and a published answer on data residency, which PowerDMARC does not offer.
Where PowerDMARC stacks up
- Genuinely cheap entry point: Basic from about £6.40/mo ($8) with a 15-day trial, no card, no contract and taxes included. For 5 or fewer domains at low volume it is cheaper than our £49 Professional, and only legitimate (DMARC-compliant) mail counts towards the cap.
- Hosted-everything suite: hosted DMARC, hosted BIMI (including VMC certificate sales), hosted MTA-STS and TLS-RPT from Basic, SPF flattening via PowerSPF and hosted DKIM at Enterprise. ShieldMarc does not ship hosted SPF or hosted BIMI today.
- Vendor-stated compliance portfolio: SOC 2 Type 1 and 2, SOC 3 and ISO/IEC 27001:2022, plus GDPR, CCPA and PCI-DSS statements. If your procurement hard-gates on these attestations, that may be decisive.
- Mature partner programme at scale: multi-tenant control panel, full whitelabel, PSA integration and an 11-language UI, with more than 1,000 channel partners and 10,000+ customers claimed.
- Privacy engineering at the top end: forensic (RUF) report PGP encryption with customer-owned keys and a bring-your-own-key option.
Frequently asked questions
What is an alternative to PowerDMARC for DMARC monitoring?
ShieldMarc is a UK-owned, EU-hosted alternative to PowerDMARC. It parses the same DMARC aggregate and forensic reports but publishes flat pricing (£0, £49 or £99 per month on annual billing) instead of PowerDMARC's volume-tiered Basic plan and custom-quote Enterprise, API and Partner plans, covers 25 domains on the first paid tier versus PowerDMARC's 5, and adds SSL, DNS, uptime and lookalike monitoring in the same dashboard. Other alternatives include dmarcian, EasyDMARC and Valimail. PowerDMARC remains a credible choice, particularly at very low volume where its entry price from about £6.40 per month ($8) is hard to beat.
Is ShieldMarc cheaper than PowerDMARC?
It depends on scale, and we say so plainly. For 5 or fewer domains under roughly 200,000 legitimate messages a month, PowerDMARC Basic (about £6.40 to £36 per month, stepping up as volume crosses 50,000 and 100,000 compliant emails) is cheaper on headline price than ShieldMarc Professional at £49 per month. Beyond that the picture reverses: Basic jumps to roughly £96 per month once volume crosses 200,000 compliant emails, tops out at about £160 per month billed yearly for the 2 million tier, caps at 5 active domains with no published price for more, and lists hosted SPF, phone and email support as paid add-ons. ShieldMarc Professional covers 25 domains and 1 million messages flat at £49 per month annual (about £1.96 per domain), and MSP covers 100 domain slots and 5 million messages at £99 per month, everything included.
Which is better for UK MSPs: PowerDMARC or ShieldMarc?
PowerDMARC's partner programme is genuinely mature, with a multi-tenant control panel, full whitelabel, PSA integration and an 11-language UI, but its MSP pricing is a custom pay-as-you-go quote with no published rates, so you cannot estimate per-client cost from the website. ShieldMarc's MSP plan is published: £99 per month annual for 100 domain slots, 5 million messages, unlimited team seats and brand TLD grouping (alternate TLDs of the same client count as one slot), with expansion buckets at £39.99 per month. For UK MSPs there is also the sovereignty angle: ShieldMarc is UK owned and EU hosted with UK hosting on request, while PowerDMARC is operated by a US (Delaware) corporation on AWS with no published data-residency options and no Cyber Essentials certification published.
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