One platform for every customer-facing message your product sends — receipts, MFA codes, appointment reminders, dunning sequences, status updates and audit-trail webhooks. Per-message pricing in USD, US sender requirements handled, deliverability tooling included on the standard plan.
SMS, WhatsApp messages and emails do not expire
Four channels, one source of truth. Below each preview is the literal text that goes out of 4notify to real recipients — no marketing gloss, no hypothetical mockup.
Receipts, resets, alerts — straight to the inbox, signed and authenticated.
Thanks! Your payment of $49.00 for May has cleared. Your invoice PDF is attached for your records.
Tap the link below within the next 15 minutes to set a new password. If you didn't request this, you can safely ignore the message.
US-native numbers with carrier-compliant content and sub-5-second delivery.
Your 4notify verification code is 184 902. It expires in 5 minutes. Don't share it with anyone.
Order #3201 ships tomorrow via USPS. Tracking: usps.com/4n/aB7. Reply STOP to opt out.
Utility and authentication conversations on the official Meta Cloud API.
Hi Maria — confirming your visit tomorrow at 2:30 PM with Dr. Larsen. Reply 1 to confirm, 2 to reschedule.
Your shipment cleared the local hub. The courier will call you between 10 AM and 1 PM tomorrow. Thanks for shopping with us!
Signed HMAC payloads, exponential-backoff retries, replay from the console.
Every example above is taken from a template running in production; names and amounts are scrubbed for privacy.
Earn recurring commissions by recommending the 4b2b.net ecosystem to your business partners
Illustrative numbers, real layout. The console that operators and on-call engineers actually use shows the same channel breakdowns, the same throughput trends and the same recent-events stream — minus the marketing screenshot polish.
Illustrative — figures rounded for the preview. The real console wires up to your own sending volume and is included on every plan.
Most of what 4notify ships every day in the United States is not a marketing campaign. It is the appointment confirmation that lands an hour before the visit, the second invoice nudge that turns into a payment, the verification code that arrives while the user is still looking at the sign-in screen, the renewal warning that catches an expiring contract before it auto-rolls. Reminders are the unglamorous core of customer communications — they get less attention than they deserve, and the difference between doing them well and doing them badly is the difference between a calm operations team and a queue of escalations.
A medical, legal or beauty practice that loses fifteen percent of its calendar to no-shows is leaving the difference between a profitable month and a break-even one on the table. The right reminder is sent at the right hour for that customer's local time zone, on the channel they already opened today, and it carries a one-tap reschedule path instead of a phone number nobody wants to call.
4notify ships reminder logic with quiet hours per region, channel cascade with SMS fallback when an email goes unopened for four hours, and an auto-cancel that pulls the rest of the sequence the moment the customer confirms — so the day-of reminder never lands after the appointment has already happened.
Late invoices are not a collections problem; they are a reminders problem until the moment they aren't. The first two nudges land friendly, on the channel the AP contact uses for everything else, and they include the PDF, the payment link, and the line item being asked about. By day fifteen the tone tightens and the cadence shifts. By day forty-five the sequence escalates into a human-touch workflow rather than another automated email nobody will open.
Dunning sequences in 4notify branch on invoice amount, customer tier, and prior payment behaviour. A holdout group is supported so finance can measure incremental recovery rather than guessing whether the reminders moved the needle, and the audit log keeps every send, retry and delivery code in case the dispute ever lands in a courtroom.
The difference between a sign-in flow that retains users and one that bleeds them is measured in seconds. A six-digit code that arrives twelve seconds after the request hits Apple Mail Privacy Protection's prefetch, the user's session timeout, and the IT helpdesk's open hours all at once. The acceptable answer is single-digit seconds on the median, and a route that fails over to a second carrier rather than blindly retrying when the first leg stalls.
4notify reserves a low-latency carrier path for transactional MFA traffic, surfaces per-carrier delivery rates in the deliverability console, and pages on-call automatically the moment P50 delivery for verification codes drifts above five seconds. The same engine handles password-reset links, suspicious-login warnings and the periodic "your session is about to expire" reminders.
Customers who are kept informed don't open support tickets. The shipment that's running a day late, the maintenance window that's about to take their dashboard offline for nine minutes, the API key that's set to rotate at the end of the month, the export job that just finished — every one of those is a reminder that prevents a question. The platform that ships them all from the same place is the one whose customers stop calling and start trusting.
Status reminders in 4notify reuse the same segmentation engine as marketing, so an outage notice only reaches customers actually using the affected feature, not a blanket blast that erodes trust over time. The webhook fan-out can push the same event to a public status page, a Slack incident channel and the in-app banner simultaneously, signed and replayable.
Insurance policies lapse. ID documents expire. KYC freshness windows close. Vendor contracts auto-renew on dates somebody pencilled in two years ago. A reminder set thirty, fifteen and five days before each of those events turns a compliance failure into a routine task — and the consent ledger that backs it up is the evidence the auditor wants to see when the question lands in a review meeting.
4notify lets you schedule renewal sequences from any date field in your application, store the recipient's consent and channel preference next to the audit log, and produce a tamper-evident export of the full reminder history per customer when legal asks. Retention defaults to thirteen months and extends per channel for HIPAA, FINRA and FERPA-aligned setups.
The five categories above sit on the same engine — same template language, same audit log, same deliverability tooling. There is no separate “reminders product” to license and no extra integration to maintain; reminders are simply what notifications look like once they have a schedule and a goal.
See the full product catalog →
