Safe Sending Limits and Ramp Strategy
Safe Sending Limits and Ramp Strategy
Purpose
Sending too much too fast hurts deliverability. SuperSend uses daily limits and ramp settings to keep your reputation healthy. This article explains how limits work, how to configure ramps, and how to read the capacity planning dashboard.
Why Limits Matter
New senders and domains have low reputation. If you immediately send hundreds of emails per day, providers (Gmail, Outlook, etc.) may treat you as spam. A ramp gradually increases volume so your reputation builds. Daily limits cap how much you send per day to stay within safe bounds.
Per-Sender Limits
Each sender (mailbox) has:
- max_per_day — Campaign send limit per day for that sender.
- global_max_per_day — Overall daily cap across all campaigns.
- Emails Sent Today — Shown in the Senders table as
N / max. When you hit the limit, no more sends until it resets (typically midnight UTC).
Ramp Settings
In the sender details (Account or Limits tab), you can configure:
Setting | Meaning |
|---|---|
Campaign Ramp Enabled | Turn on gradual volume increase for new campaigns. |
Campaign Ramp Duration (days) | How many days to ramp up. |
Campaign Ramp Start Volume | Starting daily volume. |
Mail Warm Minimum | Minimum warming sends. |
Max Warm Per Day | Max warming emails per day. |
Warm Email Ramp | How much to increase warming volume over time. |
These settings help new senders build reputation without overwhelming providers.
Capacity Planning Dashboard
From the campaign dashboard or team summary, a View Planning link takes you to the capacity planning view. It shows:
Status | Meaning |
|---|---|
on-track (green) | Enough capacity to complete contacts on time. |
at-risk (yellow) | May not finish in desired timeframe. |
oversubscribed (red) | More contacts than capacity. |
no-capacity (red) | No capacity allocated. |
finished | Campaign completed. |
Use this to see if you have enough sender capacity for your contact volume.
Campaign Daily Limit
Campaign Settings → Sending Rules → Campaign Daily Limit.
If set, the campaign won't send more than that number per day across all senders. This is separate from per-sender limits. Common use: cap a campaign's daily volume to spread sends over time.
How Ramp and Limits Interact
- Warming — SuperSend sends a controlled volume to build reputation. Warming uses its own ramp (warm_email_ramp, max_warm_per_day).
- Campaign ramp — When a new campaign uses a sender, the campaign can start at a low volume and ramp up over X days.
- Daily cap — Both warming and campaign sends count toward the sender's global_max_per_day. When you hit it, sending stops until the next day.
Best Practices
- Ramp new senders — Don't go from 0 to 500/day on day one.
- Respect limits — If you're hitting limits, add more senders or spread contacts across more days.
- Monitor capacity — Use the planning view to avoid oversubscribing.
- Warm before big campaigns — Let warming run before launching high-volume campaigns.
Expected Result
You understand daily limits, ramp settings, and how to use the capacity dashboard to keep sending healthy and avoid reputation damage.
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Updated on: 17/03/2026
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