Email Queue Architecture in AcelleMail
Understand how AcelleMail breaks campaigns into queue jobs, processes them with workers, handles retries, and tracks delivery status.
Dedicated vs Shared IP Address
The Core Difference
Your sending IP address is how receiving mail servers identify you. Its reputation — built from your sending history — directly affects whether your emails land in the inbox or spam folder.
| Dedicated IP | Shared IP | |
|---|---|---|
| Reputation | Yours alone | Shared with other senders |
| Warmup required | Yes (4–8 weeks) | No |
| Cost | Higher | Lower or free |
| Control | Full | None |
| Risk | Low (if done right) | Medium (others can harm you) |
| Best for | 50K+ emails/month | Low-volume senders |
When to Use a Dedicated IP
- You send more than 50,000 emails per month consistently.
- You need full control over your sending reputation.
- You have the time and volume for a proper IP warmup.
When a Shared IP Is Fine
- You send fewer than 50K emails/month.
- You use a reputable ESP (Amazon SES, SendGrid) whose shared IP pools are well-managed.
- You are just starting out and do not have warmup volume.
IP Warmup Summary
A new dedicated IP has no reputation. ISPs are suspicious of unknown IPs. To build trust:
- Week 1: Send to your most engaged subscribers only — 200–500/day.
- Week 2–3: Double volume every few days.
- Week 4–6: Reach your target volume gradually.
Monitor bounce rate, spam complaints, and Gmail Postmaster Tools during warmup. Any spike above 0.1% complaint rate means slow down immediately.
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More in Email Infrastructure
View all →Email Queue Architecture in AcelleMail
Understand how AcelleMail breaks campaigns into queue jobs, processes them with workers, handles retries, and tracks delivery status.
How Email Delivery Actually Works
Follow a single email from your "Send" button to the recipient's inbox — covering MTA handoff, SMTP conversation, DNS MX lookup, and TLS negotiation.
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