> ## Documentation Index
> Fetch the complete documentation index at: https://docs.instantcampaign.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Deliverability and domain warm-up
> Monitor DNS authentication, blocklists, DMARC alignment and reputation for every sending domain, and ramp up new domains with a warm-up plan.
The **Deliverability** page (sidebar: **Compliance → Deliverability**) shows the health of every sending domain in your workspace on one screen. The same checks run before a campaign sends, so a problem you can see here is a problem that can hold up a send.
## What the page shows
Each domain you've added under **Settings → Domain Authentication** gets a row. Click a row for details: messages sent, **Delivered**, **Bounced** and **Complaints** counts, **DMARC coverage**, and any **DNS drift**. The header shows the reporting window (by default the last 30 days).
| Column | What it tells you |
| ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **DNS auth** | Whether the published DNS records still match what was verified. **Drifted** means a record changed or disappeared after verification. The detail shows what we expected and what we found. |
| **Blocklists** | The result of the last sweep against public DNS blocklists (Spamhaus DBL, SURBL, Spamhaus ZEN, Barracuda): clear, **Listed**, or partly **Unreachable** when some zones didn't answer. |
| **DMARC alignment** | How much of your mail passed DMARC alignment, based on the aggregate reports mailbox providers send us. **No reports** until reports arrive. See [DMARC reports](/guides/sending-and-workspace/dmarc-reports). |
| **Reputation** | A daily verdict from your bounce and complaint rates: **Healthy**, **Watch**, **At risk** or **No data**. |
| **Warm-up** | The domain's warm-up ramp: **Not started**, the current day and `{sent}/{cap} today`, or **Paused**. |
### Reputation thresholds
Reputation is judged per domain, per day:
| Verdict | When |
| ----------- | -------------------------------------------------------------------------------------------------------------- |
| **At risk** | The domain is on a blocklist, **or** the bounce rate is 5% or more, **or** the complaint rate is 0.1% or more. |
| **Watch** | The bounce rate is 3% or more, or the complaint rate is 0.05% or more. |
| **Healthy** | Below those rates. Days with fewer than 100 sends are always Healthy, because rates on tiny volumes are noise. |
| **No data** | Nothing was sent. |
The At risk limits match the levels at which Amazon SES starts an account review, and Watch warns you before you get there.
## Refreshing the checks
Owners and administrators see three buttons at the top of the page:
* **Check DNS** re-reads every domain's published records and updates drift.
* **Sweep blocklists** re-checks every domain against the blocklists.
* **Recompute reputation** recalculates the reputation snapshot from recent sends.
A grey banner tells you when some domains have never been checked or swept. *Unchecked is not the same as clean*, so run the checks after you add a domain.
## When a domain blocks sending
A red banner at the top lists how many domain issues will block sending, broken down into DNS drift, blocklist listings and at-risk reputation. Before a campaign sends, its sender's domain goes through these checks:
| Check | Blocks the send when | Warns when |
| ------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| DNS authentication | Published records have drifted. | DNS hasn't been re-checked since verification. |
| DMARC reporting | Your DMARC `rua=` no longer points at our reporting address. | — |
| Blocklists | The domain is listed. | Never swept, or some zones didn't answer. |
| Reputation | The latest verdict is At risk. | Watch, no snapshot yet, or a stale snapshot. |
| Warm-up | The ramp is paused, or today's cap is spent. | The domain was verified in the last 30 days and has no ramp. |
Fix the cause, run the matching check again, and the block clears.
If the banner says the pre-send gate is in warn mode, your InstantCampaign installation is set to warn only, so these findings don't stop sends.
## Domain warm-up
A new domain that jumps from zero to thousands of emails a day gets filtered, because mailbox providers want to see volume grow gradually. A warm-up ramp sets a daily sending cap that grows every day.
On the **Deliverability** page, find the domain and click **Start warm-up**. The domain must be verified.
Enter a **Target daily volume**: the number of emails a day you eventually want to send. The page previews the ramp, for example "8-day ramp: 50 → 5000 a day".
Click **Begin ramp**. Day 1 starts now.
**How the ramp works**
* The cap starts at 50 emails on day 1 and doubles each day until it reaches your target. The last day is the target itself. A ramp never lasts more than 60 days.
* Days follow the UTC calendar: a new day starts at 00:00 UTC whether or not you sent anything. When the last day passes, the ramp is complete and the cap is lifted.
* Campaigns and journeys sending from the domain count toward the same daily cap.
**What happens when today's cap runs out**
* **Campaigns** send as many recipients as today's cap allows. The rest of the send is parked and continues automatically at 00:00 UTC. The campaign page shows a note like "Warm-up: day 2 cap of 100 reached — the rest continues at 00:00 UTC".
* **Journeys** send one email at a time. Once the cap is spent, further journey emails from that domain are held until the next UTC day.
**Pausing and ending**
* **Pause warm-up** stops all sending from the domain. The pre-send check blocks while a ramp is paused.
* **Resume warm-up** continues at today's day on the calendar, not the day you paused. Days keep counting while a ramp is paused.
* **End warm-up** finishes the ramp early and removes the cap.
A running ramp **pauses automatically** if the domain's reputation turns **At risk** (a blocklist listing, or bounce or complaint rates over the limits). Sends from the domain stay blocked until an owner or admin investigates and clicks **Resume warm-up**.
## Troubleshooting
Open the row to see which record changed and what we expected. Restore the record at your DNS provider, then click **Check DNS**.
Follow the blocklist operator's delisting process, then click **Sweep blocklists**. A listing usually follows a spike in complaints or sending to purchased or stale addresses, so clean your list before you send again.
If the domain is warming up, the send was parked at today's cap and resumes at 00:00 UTC. Check the note on the campaign page.