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Dev.to
6/10

InboxAnchor

A small-business SaaS that takes your custom domain and email provider, sets up SPF/DKIM/DMARC correctly the first time, and then quietly maintains them as you add new tools over the years.

Target user

Small business owners and marketing leads sending email from a custom domain who keep landing in spam or have been told by a client to 'fix DMARC'

Features
  • Provider-detecting one-click setup that detects Google Workspace, M365, SES, Postmark or Mailgun and writes merged SPF records instead of two-record-per-domain errors
  • Plain-English DMARC report digester so an owner actually reads them and learns that an old CRM is sending as their domain
  • New-tool detector that watches newly-published DNS records and flags anything that starts sending mail as your domain
  • Migration assistant that re-issues DKIM keys when switching ESPs and re-validates Gmail 'show original' passes
Why now

A Dev.to post laying out the '15 minute setup' still pulled 12 reactions because Gmail and Yahoo now require DMARC for bulk senders, and the documented mistakes (two SPF records, proxied DKIM, jumping to p=reject) are still happening in production.

Signals · overall 6/10
Demand
7/10

Gmail/Yahoo enforced DMARC for bulk senders Feb 2024 and Microsoft is joining May 2025; per bizmailnet.com only 7.6% of B2B senders reach quarantine/reject, and the SPF 10-lookup limit remains the top silent failure as SMBs layer SaaS tools.Gmail and Yahoo 2024 Bulk Sender Requirements: Full ComplianceDMARC, DKIM, and SPF Setup for Small Business: Step-by-Step Checklist

Whitespace
4/10

The space is meaningfully crowded: Suped's 2026 hands-on review evaluated 14 DMARC services (Suped, dmarcian, Valimail, DMARCEye, URIports, MailHardener, MyDMARC, SimpleDMARC, DMARCly, Glockapps, PowerDMARC, MXtoolbox, etc.), but most skew to technical/MSP users rather than non-technical SMB owners.Best 14 DMARC Services for Best Value per Domain in 2026

Monetization
6/10

Willingness to pay spans a wide range: Suped self-serve starts at $19/month with a free tier, while managed white-glove services like DMARCSaaS price at €395/domain — showing real demand at both ends, though SMB buyers tend to be price-sensitive.DMARC Monitoring Pricing | Plans from $19/monthPricing - DMARCSaaS

Longevity
8/10

Email authentication is an RFC-stable, regulator-trending category (RFC 7489/7208/6376, plus MTA-STS/ARC) and Microsoft joining the requirement set in 2025 confirms an escalating, not receding, compliance burden.Understanding Gmail and Yahoo DMARC Requirements - dmarcian

Feasibility
6/10

Setup is straightforward DNS work, but ongoing maintenance requires DMARC RUA report ingestion, SaaS-sender heuristics, and provider API integrations — doable but the 90-day hands-on testing Suped runs shows the operational depth needed to be credible.Best 14 DMARC Services for Best Value per Domain in 2026

SPF, DKIM, DMARC: the 15-minute setup that actually passes · 12 reactionsDev.to · 2026-07-22 (2d ago)