deliverlensInvestigate one message from send to receiver ↗
Trace one authorized message through sending, authentication, acceptance, and mailbox evidence without mixing unlike signals.
4 min readPractical workflows
Email deliverability guides
Follow practical guides to fix authentication failures, investigate delivery problems and plan reliable email tests. Find the next step for your sending setup.
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12 pieces available.
Audit a domain's sending services before DNS changes ↗
Build a sender inventory that prevents legitimate systems from being removed during SPF, DKIM, or DMARC work.
4 min readInvestigate a rise in authentication failures ↗
Segment failures by identity and sending path before changing policy or keys.
4 min readPlan an email-platform migration with comparable evidence ↗
Establish a baseline, migrate one bounded stream, and compare fresh evidence before expanding traffic.
4 min readAssemble a privacy-conscious support evidence packet ↗
Give a provider enough reproducible evidence without exposing recipients, credentials, or unrelated message content.
4 min readEstablish a repeatable monthly sending review ↗
Turn one-off checks into a bounded operational review with owners, evidence, and follow-up dates.
4 min readPrepare a BIMI readiness evidence pack ↗
Collect authentication, policy, logo, evidence-document, and provider requirements before expecting display.
4 min readBuild an authorized address-quality review process ↗
Use validation signals without treating them as consent, certainty, or permission to probe arbitrary recipients.
4 min readInvestigate reputation across domain, link, and sending IP ↗
Query the identifier each data source actually supports and avoid universal blacklist claims.
4 min readRun a fair comparison of two email revisions ↗
Compare two messages while controlling sender, route, recipient sample, timing, and observation window.
4 min readAdd Deliverlens checks to an application using scoped keys ↗
Create a named least-privilege key, submit an idempotent run, and poll without exposing the secret.
4 min readHandle plan usage, resets, and API throttling predictably ↗
Separate service units from HTTP request limits and recover from quota or rate errors safely.
4 min read