dkimtest.com

What it is

DKIM Test is an email authentication and deliverability monitoring tool from Use Boring. Its most basic feature is a free DKIM checker: enter a domain and selector to verify whether the DKIM public key has been published, whether the format is valid, and whether the selector is configured correctly. The page also provides helper links for finding selectors by email service provider, which is useful for users who are not familiar with DKIM record naming conventions.

Core features

In terms of coverage, it is more than a single-purpose DKIM lookup tool; it has expanded into an Email Deliverability Suite. Its monitoring scope includes SPF, DKIM, DMARC, BIMI, MX, and blocklists. SPF monitoring checks for record changes, syntax issues, and the 10 DNS lookup limit; DKIM monitoring checks whether the key exists, has changed, and is valid; DMARC monitoring covers policies, subdomain policies, and report configuration; MX monitoring tracks changes related to inbound mail routing; and blocklist monitoring checks major lists such as Spamhaus, Barracuda, SpamCop, and SORBS daily. Overall, its positioning is to “detect broken email authentication configurations before they cause problems.”

Pricing and ease of use

Pricing is straightforward: DKIM Tester is free and supports unlimited DKIM lookups; the free monitoring plan supports up to 3 domains, daily checks, and email alerts; Pro costs $39/month and includes unlimited domains, up to 5 shared recipients, custom check times, on-demand manual checks, and CSV bulk import. For teams managing a large number of domains, the fact that pricing is not charged per domain is a clear advantage.

Pros and cons

The strengths are its low barrier to entry, clear explanations, practical free tier, and coverage of common email deliverability risk points. The downsides are that the main content does not mention an API, SDK, webhooks, team permissions, or third-party alerting integrations. The terms also clearly state that there is no formal SLA; monitoring is periodic rather than continuous, and there is no guarantee of data accuracy or alert immediacy. No self-hosting or open-source information is disclosed either.

Who it is for and access from China

It is suitable for domain administrators, email operations teams, SaaS companies, e-commerce businesses, and marketing teams that need to monitor the authentication health of business mailboxes, transactional email, or marketing sending domains. The main content does not provide information about access from China, so it is not possible to determine whether direct access is reliable. If access is unstable, alternatives such as MXToolbox, EasyDMARC, dmarcian, Google Admin Toolbox Check MX, or Mailhardener may be worth considering. Payment methods are not specified; the only confirmed detail is that paid plans can be prepaid monthly or annually.