SMS Campaign Scheduling — Send Windows & Business Hours

Define when your campaigns send. Set business hours, time zones, and blackout periods. Messages only go out when you want them to.

Key Capabilities

Full Control Over Send Timing

Campaigns that respect business hours and recipient time zones.

1

Send Window Configuration

Define the hours during which campaign messages can be sent: e.g., 9:00–18:00 Monday through Friday. Messages queued outside the window wait until the next open slot. No SMS at 3 AM.

Send Window
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09:00
11:00
13:00
15:00
17:00
Active (9–17)
Paused
2

Pause & Resume

Pause a running campaign at any time. Remaining messages stay in queue. Resume when ready — the campaign picks up exactly where it left off.

Timezone Handling
Recipient Timezone
+49 (Germany)
CET (UTC+1)
Calculated Send Time
Within business hours
10:00 CET
Auto-adjusts delivery to recipient's local business hours
3

Schedule for Future

Create a campaign now, schedule it to start next Monday at 10:00. Set it and forget it. SIMtrix will begin sending at the configured time within your send window.

Pause & Resume
Campaign Paused
at 15:00 — outside send window
Sent: 420 / 1,24034% complete
Auto-Resume
Tomorrow 9:00 — send window opens
~18 hours until resume

How It Works

Plan your campaign timing precisely.

1

Set Send Window

Configure the daily hours and days of the week when messages can be sent.

2

Schedule Start Time

Choose when the campaign should begin. Immediately or at a future date/time.

3

Campaign Runs Automatically

SIMtrix sends messages within the window, pauses outside it, and resumes the next day.

Who Is This For?

Scheduling matters for campaigns that need to respect business hours.

1

Marketing Managers

Schedule campaigns for optimal open times. Tuesday 10 AM performs better than Monday 8 AM? Set it.

2

Compliance Officers

Ensure no messages are sent outside permitted hours. Send windows enforce regulatory compliance automatically.

3

Sales Leaders

Queue follow-up campaigns during off-hours. Messages go out first thing in the morning — no manual work.

Frequently Asked Questions

They wait in the queue until the next open send window. If your window is 9:00–18:00 and the queue has remaining messages at 18:00, they resume at 9:00 the next permitted day.

Each campaign has its own send window configuration. You can run multiple campaigns simultaneously with different schedules.

Send windows use the time zone configured in your SIMtrix admin panel. Recipient time zone awareness is on the roadmap.

Schedule campaigns that respect business hours

Set your send window. SIMtrix handles the timing.

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