# Sending Calendar The Sending Calendar shows, for **every campaign and survey in your account, who the next run will reach, how many people, and through which channel**. It answers the question "what happens if this runs now?" before anything is sent. > **How do I open this screen?** From the left menu, go to **Bumerang → CAMPAIGN → Sending Calendar**. ![Sending Calendar screen](https://help.useroam.com/uploads/images/gallery/2026-08/bumerang-zamanlama.png)
**The engines run every 5 minutes.** The candidate counts on screen are the **estimated** number of people the next run will reach — it is a live count, and opening this screen sends nothing.
The top of the page shows when each of the four engines last ran: **Campaign SMS**, **Campaign WhatsApp**, **Survey SMS**, **Survey WhatsApp**. --- ## 1. Campaigns table Lists every active and paused campaign in your account (for each NAS). **Candidate counts are calculated for active campaigns only.** - **CAMPAIGN:** the campaign's name. - **STATUS:** *Active* or *Paused*. - **NAS:** the device the campaign belongs to. - **TRIGGER:** the condition that fires it — *Welcome*, *Nth Visit*, *Win-back* and so on. - **NEXT CANDIDATES (SMS)** / **(WHATSAPP):** how many people the next run will reach. A `—` means that channel is not used by this campaign. - **TRIGGER WINDOW:** the hours during which sending is allowed (for example *10:00-21:00*) and its current state (*open now* / *closed now*). Paused campaigns read *"Paused, no sending"*. - **SENT TODAY:** messages this campaign has sent during the day. - **LAST SEND:** when it last sent anything. > **If the candidate count is 0:** either no guest meets the condition, the opted-in audience is empty, or the trigger window is closed. You can see all three possibilities on the same row. --- ## 2. Surveys table Shows the next estimated candidate count for surveys with SMS/WhatsApp triggers enabled. The columns match the campaign table, with an extra **PORTAL** column. > **Portal surveys are different:** they are shown at login and do not use the sending queue, so do not expect a candidate count for them. --- > **Related pages:** **Bumerang → Campaigns**, **Surveys**, **Bulk Sending**, **Opted-in Guests**.