High-Volume Sending Infrastructure Checklist

beauhightow

Member
Hello community,

We’re planning to scale up sending close to 1M emails/day soon.

We’re using Mumara Campaigns for some clients and MumaraONE for others.

What does a proper high-volume sending infrastructure checklist look like for both environments?

I want to avoid throttling, crashes, or reputation drops during peak traffic.
 
That's quite a question you have asked and important to separate the two. Let me break down the summarized things for your better understanding.

Infrastructure planning is different depending on whether you're using:
  • Mumara Campaigns (Self-Hosted / Cloud deployment)
  • MumaraONE (SaaS managed by Mumara)
The sending logic is similar but infrastructure responsibility changes.

For Mumara Campaigns (Self-Hosted or on Cloud Server)
Here, you control the server, so infrastructure is your responsibility.

Server Capacity
Minimum recommendations for high volume:
  • NVMe or SSD storage
  • 8–16 GB RAM (depending on volume)
  • Dedicated CPU cores
  • Stable outbound network
Example: One sender running Mumara Campaigns self-hosted scaled to ~900K/day on:
  • 16GB RAM dedicated server
  • 3 warmed IPs
  • Optimized sending node configuration
Mumara handled queueing fine but performance depended on server tuning.

Dedicated Sending IPs
For 500K+ daily:
  • Avoid shared IPs
  • Warm each IP properly
  • Keep volume consistent
Jumping volume without warm-up is the #1 cause of throttling not the software.

Authentication Setup
Must-have:
  • SPF passing
  • DKIM aligned
  • DMARC published
  • Branded tracking domain
  • Feedback loops
Without this, high volume will trigger Yahoo/Gmail filtering regardless of hardware.

Sending Behavior
Even on powerful servers, mailbox providers dislike:
  • Sudden 5x spikes
  • Sending to cold segments
  • High complaint rates (>0.1%)
Infrastructure ≠ immunity from reputation rules.

For MumaraONE (SaaS)
Here’s the key difference:
- You don’t manage servers or system scaling.

MumaraONE infrastructure is managed by Mumara, including:
  • Server resources
  • Application scaling
  • Background workers
  • Core optimization
So your focus shifts from hardware → to sending discipline.

Volume Planning
Even in SaaS, mailbox providers still monitor:
  • Sudden volume increases
  • Complaint rate
  • Bounce rate
  • Engagement quality
MumaraONE can handle technical scaling but reputation management is still your job.

IP & Pool Strategy
Depending on your setup:
  • Dedicated IPs need warming
  • Shared pools require careful segmentation
If you suddenly blast 1M cold contacts, even SaaS won’t protect your reputation.

Automation Load (Mumara)
If using Automation Add-on:
  • Ensure triggers are optimized
  • Avoid overlapping massive campaigns + heavy automation
  • Monitor activity logs
System scaling is managed but sending strategy matters.
 
Exactly, thats what I wanted to clarify

Self-Hosted:
  • Server tuning + IP warming + monitoring
MumaraONE:
  • Segmentation + complaint control + volume consistency
In both cases: High volume + low engagement = deliverability issues.
 
Yes Ofcourse here is a real example:

Case 1 – Self-Hosted Campaigns
Sender jumped from 150K → 800K overnight.
Result:
  • Yahoo throttled
  • IP reputation dropped to Neutral
  • Took 3 weeks to stabilize
Server handled it but the reputation gets crippled.

Case 2 – MumaraONE SaaS
Sender increased volume gradually over 14 days.
Segmented active users first.
Result:
  • Stable inbox placement
  • Complaint rate under 0.05%
  • No throttling
Same volume but with a different and fruitful strategy.

Final Summary Checklist
For Mumara Campaigns (Self-Hosted):

✔ Strong server (SSD/NVMe + RAM)
✔ Dedicated warmed IPs
✔ Authentication aligned
✔ Queue monitoring
✔ Gradual scaling

For MumaraONE (SaaS):

✔ Volume planning
✔ Clean segmentation
✔ Complaint rate under 0.1%
✔ No sudden spikes
✔ Automation properly structured
 
This breakdown clears up the confusion perfectly.

I was mixing infrastructure management with deliverability management.
Now it makes sense.

Thanks!
 
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