Email, chat, SMS and notification delivery. Most of these need the operator’s own account or key before anything is sent.
Universities worldwide by name and/or country, with official websites and email domains. Use to verify academic email addresses, fill forms or build education lists.
Convert a date-time (or now) from one time zone to several others, by IANA name, city or abbreviation (Dubai, New York, PST, CET): local time, UTC offset, abbreviation, DST flag and weekday. Use to schedule meetings acro...
Get the day number within the year (1-366) for any date, plus days remaining, leap-year status, percent of year complete, and a simple (Sunday-start) week number.
Compute the date of Easter Sunday for a given year using the Anonymous Gregorian algorithm (Meeus/Jones/Butcher). Also returns Good Friday, Ash Wednesday, Palm Sunday, Pentecost, and the day-of-year for Easter.
Get the ISO 8601 week number, ISO day-of-week, quarter, and day-of-year for any date. Useful for fiscal/reporting calendars, weekly aggregations, and sprint planning.
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
Public holidays for a country and year from an open public-holiday dataset (keyless, 100+ countries): date, local name, English name, nationwide flag, and holiday types. Pairs with /api/business-days and /api/country-inf...
Detect which email service a domain uses (Google Workspace, Microsoft 365, Zoho, Proton, OVH, IONOS...) from its MX and SPF records, plus corporate spam filters and other senders. For B2B sales and audits.
Business days in 150+ countries and their regions: count between two dates, or the date after adding N business days, skipping weekends and official holidays, listing the holidays in the range.
Validate one email address without sending mail: syntax, MX, disposable, free webmail, role account, SPF/DMARC. Returns deliverable/risky/undeliverable/invalid with score.
Parse iCalendar (.ics) text into structured JSON events: summary, start/end, location, organizer, attendees, status, and RRULE. Optional bounded recurrence expansion (expand:true, capped occurrences). Deterministic, pure...
Check an email address: RFC syntax, live MX records via DNS-over-HTTPS, and disposable-domain screening. POST { email } or { emails: [...] } (max 20).
Generate scannable QR codes from any text, URL, or structured payload (WiFi, vCard, SMS, email, geo, crypto). Returns PNG by default with JPG, WebP, and SVG output, plus optional error-correction, sizing, color, version,...
Turn an iCal/ICS calendar URL (Google Calendar, Outlook, holidays, events...) into JSON: upcoming events with title, start and end, all-day flag, location, description and link over the next N days; text filter.
Validate email format, disposable-domain heuristics, and live DNS MX records via DoH for outreach and lead-gen agents
Operations queue: produce source-backed manual next actions without guessed fixes. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never...
Import repair: identify multiple at signs requiring source inspection. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up...
CSV import repair: identify outer whitespace changed by normalization. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up...
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
Verify a webhook's HMAC signature against the correct per-provider scheme: GitHub (X-Hub-Signature-256, sha256=hex), Stripe (Stripe-Signature t/v1 over "<t>.<body>" with replay tolerance), Shopify (X-Shopify-Hmac-Sha256,...
Email validation for syntax, DNS/MX, disposable domain, role-based address, free provider and provider-typo checks. Returns normalized email, deliverability verdict, risk score, typo suggestion and structured validation...
Infer a draft-07 JSON Schema from sample JSON document(s). Send one sample as json, or several as samples. Heuristic merge rules: required = keys present in every sample, conflicting types become a type union, integer wi...
Appointment deadline slack reserve with a separately reported dispatch-readiness decision. Require minimum seconds from actual service start until the declared job window end. Uses the paid-qualified existing VRP planner...
Validate up to 500 email addresses in one paid request using syntax, MX, disposable, role-account and domain-risk checks.