01Four ways to time a send
Now, later, inside a window, or at a pace.
They combine. A window with a drip rate is the most common setting for anything marketing.
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01Now
The default. Messages start leaving within seconds of confirmation, at full route speed.
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02At a moment
One timestamp, your zone or UTC. Everyone receives at the same instant, whatever their local time.
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03In a window
A local start and end hour. Each zone opens when its clock says so and stops at the end hour, resuming next day if needed.
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04At a pace
A fixed number of messages per minute, or the whole list spread over N hours. Stackable with a window.
02Quiet hours
Defaults per country. Yours to change.
Marketing traffic is held outside the local window we keep for each destination. Transactional messages such as codes, alerts and receipts can be flagged to bypass it.
- Held, not dropped. Messages wait for the window and go out in order.
- DST aware. Computed in the destination zone at send time.
- Per campaign. Override the default or switch it off for a specific send.
| Destination | Default window | Sundays |
|---|---|---|
 France | 08:00 to 20:00 | Held |
 Germany | 08:00 to 21:00 | Held |
 United Kingdom | 08:00 to 21:00 | Sent |
 United States | 08:00 to 21:00 per zone | Sent |
 India | 09:00 to 21:00 | Sent |
 Brazil | 08:00 to 20:00 | Held |
 United Arab Emirates | 07:00 to 21:00 | Sent |
 Japan | 08:00 to 21:00 | Sent |
Defaults for the eight busiest destinations. The full list is on each country page under Coverage.
03From the API
Two parameters. Same behaviour as the panel.
send_at for a moment, window for local-time delivery, pace for drip. All three accept the same values on single messages and batches.
{
"window": { "local_start": "09:00", "local_end": "19:00",
"quiet_hours": "default" },
"pace": { "per_minute": 400 },
"messages": [
{ "to": "+81312345678", "from": "METEOR", "text": "..." },
{ "to": "+4915112345678", "from": "METEOR", "text": "..." },
{ "to": "+14155550142", "from": "METEOR", "text": "..." }
]
}{ "batch_id": "bat_7Ls2Vq", "accepted": 3,
"first_send_at": "2026-09-21T00:00:00Z",
"last_send_at": "2026-09-21T16:00:00Z",
"zones": 3 }04Questions, answered
Timing questions we hear most.
How does local time work for a mixed list?
Each number is mapped to its country and, for countries with several zones, to a zone from its prefix where the numbering plan allows it. The campaign then starts at the chosen local time in every zone, so a 09:00 send reaches Lisbon and Tokyo at 09:00 each.
What are quiet hours?
A per-country default window during which marketing traffic is held, based on the local rules and habits we track for each destination. You can widen, narrow or disable them per campaign. Transactional messages such as codes and alerts can bypass them.
What is drip sending?
Instead of sending everything at once, the campaign is spread at a fixed pace, for example 500 messages per minute or the whole list over six hours. Useful when replies land on a support team or a landing page.
Can I schedule from the API?
Yes. Pass send_at with an ISO 8601 timestamp for a fixed moment, or window with local_start and local_end to deliver inside a local-time window. Both work on single messages and batches.
Can I edit or cancel a scheduled campaign?
Until the first message leaves, everything is editable: text, list, sender, time. Once running, you can pause, resume or cancel the remainder; messages already handed to carriers still deliver.
Does scheduling cost extra?
No. Scheduling, windows, quiet hours and drip are part of every account. You pay the same per-message rate whenever the message goes out.
What about daylight saving changes?
Windows are computed in the destination zone at send time, so a campaign scheduled in March for a country that changes its clocks still lands at the local hour you chose.
Can a campaign repeat?
Yes. Daily, weekly or monthly recurrences reuse the list and text; each run gets its own report and can be stopped independently without affecting the series.
05More products
Everything else in the toolkit.
One account, one balance, one rate card. Every product below is included; none costs extra.
See the rate card