Monthly Email Volume
500,000
Shared ESP CPM Rate ($/1,000)
$0.85
Dedicated MTA Node Tier
Professional ($199/mo)
Current ESP Cost
$425 / mo
At shared tier rate
AutoSMTP Dedicated
$199 / mo
Flat rate server hosting
Monthly Savings
$226 / mo
Direct cash saved
12-Month Net ROI
$2,712
Annual savings
Volume Break-Even Status
Dedicated Server is 53% Cheaper!
Break-Even Volume: 234,117 msgs/mo
Effective Dedicated CPM: $0.40
📈 Monthly Volume Cost Projection Matrix
| Monthly Sending Volume | Shared ESP (SendGrid/Mailgun) | AutoSMTP Dedicated Node | Monthly Cash Savings | Annualized Impact |
|---|
The Economics of Dedicated vs. Shared Email Infrastructure
Cloud email service providers (SendGrid, Mailgun, Brevo, Campaign Monitor) monetize through metered per-thousand CPM pricing. As your audience and daily dispatch volumes scale, SaaS bills skyrocket while your emails remain grouped on shared IP pools alongside thousands of other noisy senders.
Dedicated MTA infrastructure (PowerMTA, KumoMTA, Postfix) converts variable CPM costs into a flat, predictable monthly server cost. Once your monthly dispatch volume crosses the break-even threshold (typically 200,000 to 300,000 emails per month), dedicated infrastructure delivers 50% to 80% monthly cash savings while granting complete control over IP reputation, PTR records, and warmup cadences.