Email deliverability & compliance tools

Check email address formatting against RFC 5321/5322 standards.

Identify the mailbox service for any email or domain.

Audit SPF, DKIM, DMARC, BIMI, MTA-STS and blacklist status in one scan.

Detect disposable and temporary email addresses on signup.

Test deliverability and spam score before you press send.

Validate email syntax, MX records, deliverability, and disposable status.

Resolve SPF records and audit DNS lookup count against the RFC 7208 limit.

Build a formatted SPF record from your IPs, includes and policy qualifier.

Read DMARC policy, alignment mode, and reporting configuration.

Build a DMARC record from your policy, subdomain settings, and reporting setup.

Resolve mail server hostnames and priority order for any domain.

Query A, AAAA, MX, TXT, CNAME, NS, SOA and other DNS record types.

Check mail-server IP reputation on the SenderScore index.

Score DNSSEC, DANE, CAA, registry lock and 9 more DNS security controls.

Scan 17 major DNS blacklists for your sending domain.

Check any IPv4 or IPv6 against 69 major email DNSBLs.

Check any URL against threat intelligence feeds for malware and phishing.

Verify any HTTPS URL is live and reachable.

Test whether any TCP port is open and reachable on any host or IP.

Score any subject line for spam risk, readability and length.

Generate AI subject line alternatives from your draft.

Check reading ease, grade level and reading time for any text.

Decode emotional tone of body copy with AFINN scoring.

Verify SMTP connectivity, banner and TLS handshake.

Send a real test message via your SMTP credentials.

Create localised person profiles with optional job and biography fields.

Generate contact fixtures with email, phone, account and social fields.

Generate name fixtures with locale, gender, type and seed controls.

Generate date, month, weekday and time-zone fixtures.

Generate phone number and IMEI fixtures with locale and style controls.

Generate company names, catch phrases and business vocabulary.

Generate product, price, department and ISBN fixtures for tests.

Generate account, card, currency, IBAN and payment fixtures.

Generate dish, cuisine, ingredient and menu fixtures for tests.

Generate branch, commit, SHA and log fixtures for parser tests.

Generate animal species, breed and pet-name fixtures for tests.

Generate title, author, genre and publisher fixtures for tests.

Generate vehicle, VIN and registration fixtures for test datasets.

Generate file, MIME, cron, interface and semver fixtures.

Generate RGB, HSL, CMYK and CSS colour fixtures.

Generate words, paragraphs, slugs and lines for fixture tests.

Generate adjectives, nouns, verbs and word-list fixtures.

Generate UUID, ULID, Nano ID and custom string fixtures.

Generate integer, float, BigInt and base-number fixtures.

Generate airline, airport, flight and booking fixtures.

Generate column, engine, ObjectId and type fixtures.

Generate true or false fixtures for flag tests.

Generate jargon phrases, abbreviations, adjectives, nouns and verbs.

Generate placeholder image URLs, avatars and SVG data URIs.

Generate album, artist, genre and song name fixtures.

Generate chemical element and SI unit fixtures for science apps.

Generate address, city, country, GPS coordinate and zip code fixtures.

Generate email, IP, domain, JWT, MAC, password and user agent fixtures.

Check phone-number syntax for international E.164 formats.