Per-email vs per-contact pricing: which model actually saves you money?
Email marketing platforms charge in two fundamentally different ways. Most people don't realize they're paying for a pricing model that might be hurting their business.
Let's break down the math.
The two pricing models
Per-contact pricing charges you based on how many contacts are in your list, whether you send to them or not. Mailchimp, Klaviyo, ActiveCampaign, and most legacy platforms use this model.
Per-email pricing charges you based on how many emails you actually send. Resend, Postmark, SendGrid, and PristineSend use this model.
The difference matters more than most marketers realize.
Quick math example
Imagine you have 25,000 contacts and you send 2 emails per month to all of them.
Mailchimp Standard plan (per-contact):
- 25,000 contacts costs $135/month
- You can send 12 emails per month per contact
- Total cost: $135/month regardless of how many you actually send
PristineSend Growth plan (per-email):
- $39.99/month includes 25,000 emails
- You send 50,000 emails per month (25K × 2)
- You need to upgrade to Scale plan: $69.99/month for 50K
Verdict for this scenario: PristineSend is $65/month cheaper.
But change the variables and the answer flips.
When per-contact pricing wins
Per-contact pricing wins when you send frequently to small lists.
Scenario: 5,000 contacts, daily emails (30 sends per month)
- Mailchimp: 5,000 contacts at ~$75/month
- PristineSend: 150,000 emails needed, that's our Pro plan at $129.99/month
Daily senders with small lists pay less on Mailchimp.
When per-email pricing wins
Per-email pricing wins when you have large lists you don't email constantly.
Scenario: 100,000 contacts, monthly newsletter (1 send per month)
- Mailchimp: 100,000 contacts costs ~$385/month
- PristineSend: 100,000 emails fits the Pro plan at $129.99/month
Monthly senders with big lists save 66% with per-email pricing.
The breakeven calculation
Here's a simple formula to figure out which model fits your business:
If (sends per month per contact) > 5:
Per-contact pricing is usually cheaper
If (sends per month per contact) < 3:
Per-email pricing is usually cheaper
Between 3-5:
It depends on your specific list size and platform tier
For most marketing teams, sends per contact is between 1 and 4 per month. That's the sweet spot for per-email pricing.
For automation-heavy use cases (welcome series, abandoned cart, transactional triggers), sends per contact can easily hit 10+. That's when per-contact pricing wins.
The hidden cost of per-contact pricing
Per-contact platforms create a perverse incentive: you pay to KEEP contacts on your list, even if they never open your emails.
Most lists have a graveyard problem. About 20-30% of contacts are dead — they signed up years ago, never engage, and will never buy anything. On Mailchimp, you're paying $50-100/month to store these zombies.
Per-email platforms don't care if a contact is engaged or not. You only pay when you choose to send to them. Cleaning your list doesn't save you money — and that's actually a good thing for reputation reasons.
The real cost: deliverability, not pricing
Here's the thing nobody talks about: pricing matters less than deliverability.
If Platform A costs $50/month but only delivers 75% of your emails to inboxes, and Platform B costs $80/month and delivers 95%, Platform B is cheaper per delivered email.
Mailchimp's open rates average 21% across all industries. Premium platforms like Postmark and Resend regularly see 40-50% open rates for the same content. The difference isn't your subject line — it's whether your emails reach inboxes at all.
For a 25,000-contact list sending 2 emails per month:
- 21% open rate = 10,500 opens
- 40% open rate = 20,000 opens
At Mailchimp's $135/month, that's $0.013 per opened email. At a premium platform's $80/month, that's $0.004 per opened email.
The "expensive" platform delivers 3x cheaper opens.
How to decide
Ask yourself three questions:
1. How big is your list?
Under 5,000 contacts: pricing barely matters, pick by features.
5,000-50,000: per-email pricing usually wins for marketers, per-contact wins for high-frequency senders.
Over 50,000: per-email pricing usually wins by a wide margin unless you're sending daily.
2. How often do you actually send?
Once a month or less: per-email pricing wins.
Weekly: depends on list size — calculate it.
Daily: per-contact pricing often wins, especially with automation.
3. What's your current open rate?
Below 20%: deliverability is your real problem, not pricing. Switch to a strict platform regardless of pricing model.
Above 35%: you're doing well, optimize for cost.
The honest answer
For most marketing teams sending newsletters, campaigns, and the occasional product announcement to a list between 10,000 and 100,000 contacts, per-email pricing saves money.
For transactional-heavy applications, drip sequence automation, and daily senders to small lists, per-contact pricing often wins.
PristineSend chose per-email pricing because we serve the first group: marketers who want predictable costs that scale with what they actually send, not what they store.
Curious what you'd pay? Our pricing page shows all five tiers with clear monthly email allowances.