deliverlensBIMI & brand indicators
Prepare a BIMI readiness checklist
Check authentication, logo assets, evidence requirements, and mailbox-provider coverage.
2 min read
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Email foundations10 lessons available SPF, without the guesswork10 lessons available DKIM & message integrity10 lessons available DMARC & domain protection10 lessons available BIMI & brand indicators10 lessons available Email verification10 lessons available Lists that people want10 lessons available Reputation & blocklists10 lessons available Inbox placement10 lessons available Deliverability operations10 lessons available
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100 published lessons found.
BIMI & brand indicators
Find the default BIMI record
Query the assertion name and distinguish missing records from retrieval failures.
2 min read
BIMI & brand indicators
Prepare an SVG logo for BIMI review
Validate the required format and remove unsupported content before publication.
2 min read
BIMI & brand indicators
Understand VMC and CMC evidence documents
Compare provider acceptance requirements before buying or deploying a certificate.
2 min read
BIMI & brand indicators
Use BIMI selectors for different sending identities
Document selector choice, records, and the message-side signal.
2 min read
BIMI & brand indicators
Troubleshoot a logo that does not display
Review provider criteria and observed messages without assuming DNS alone controls display.
2 min read
BIMI & brand indicators
Host BIMI assets safely over HTTPS
Plan stable URLs, valid transport, access controls, and safe resource validation.
2 min read
BIMI & brand indicators
Renew a BIMI certificate without losing evidence
Track validity, ownership, provider acceptance, and a post-renewal message test.
2 min read
BIMI & brand indicators
Plan BIMI for subdomains and multiple brands
Map brand assets and policy requirements to actual From domains.
2 min read
BIMI & brand indicators
Build a BIMI launch evidence pack
Collect DNS, asset, certificate, and provider observations for an accountable launch review.
2 min read
Email verification
Interpret an email verification result
Separate syntax, domain, mailbox-provider signals, risk, and uncertainty.
2 min read
Email verification
Validate syntax without rejecting legitimate addresses
Use a maintained parser and distinguish product policy from protocol validity.
2 min read
Email verification
Understand MX records and mail acceptance
Inspect routing information without treating it as proof that a mailbox exists.
2 min read
Email verification
Handle catch-all email domains
Keep ambiguous results out of the guaranteed-valid bucket.
2 min read
Email verification
Treat disposable-address signals proportionately
Explain provider coverage, false positives, and appropriate product decisions.
2 min read
Email verification
Handle SMTP timeouts and greylisting
Use bounded retries and keep unknown results distinct from invalid addresses.
2 min read
Email verification
Design a privacy-aware verification form
Minimize input retention, prevent enumeration, and explain provider data sharing.
2 min read
Email verification
Plan a safe bulk-verification workflow
Set authorization, quotas, provider costs, retention, and partial-result behavior.
2 min read
Email verification
Review internationalized email support
Document parser, transport, and provider limitations before normalizing addresses.
2 min read
Email verification
Measure a verifier with a labeled sample
Evaluate errors and unknown rates using authorized data rather than vendor promises.
2 min read