【2026】OpenShip Mail Server Complete Comparison: Send 80K Emails a Week for $0 with Self-Hosting

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「Paying $100+ a month to send 80K emails a week?」

For startups and indie developers, email sending costs quietly add up. Password resets, receipts, magic links, marketing emails… when you're sending tens to hundreds of thousands of emails a month, every invoice makes you think, "Can't this be cheaper?"

Bottom line: Deploy OpenShip on your own $5 VPS, and with unlimited domains and unlimited inboxes, your email sending cost becomes effectively $0.

After reading this article you'll know:

• Major email API pricing and savings vs OpenShip
• The real capability of OpenShip's email features
• The downsides of self-hosting (written honestly)
• Actual setup steps
• The criteria for "should I switch now?"

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Shocking Price Comparison — Sending 80K Emails a Week

First, the startling numbers. The case of 80K emails/week posted by OpenShip's official X account (@openshipio):

That's $3,780–$4,740 in yearly savings.

And email isn't OpenShip's only feature. One $5 VPS runs a deployment platform, DB, Redis, object storage, and mail server — all of it.

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How the Pricing Works (Beginner Explanation)

Why does 80K emails/month cost $80–$100? Here's a rough breakdown.

Resend — $80+

• Pro: $20/month for 50K emails (then $0.90/1K)
• Scale: $90/month for 100K emails
• Over 50K, Pro overage fees pile up — effectively forces upgrade to Scale
• At 320K/month, Scale's $90 plus overages adds even more

SendGrid — $90+

• Basic: $19.95/month for 50K emails
• Essentials: $89.95/month for 100K
• Overages at $0.30/1K add up fast at volume

Mailgun — $80+

• Foundation: $35/month for 50K emails
• Scale: $90/month for 100K
• Over 100K, volume pricing applies

Postmark — $100+

• Flat per-email pricing: $0.10/1K emails
• 320K/month = $100+ base, and server emails are more expensive

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What Is OpenShip?

OpenShip is an open-source PaaS (Platform-as-a-Service) for self-hosting — think "self-hosted Vercel + Heroku + DB + Redis + object storage + mail server" in one.

Its philosophy: "Deploy anything. Own everything."

With a single $5 VPS (2GB RAM), you can run:

• Deployment platform (like Vercel/Heroku)
• Database (Postgres)
• Redis cache
• Object storage (S3-compatible)
• Mail server (unlimited domains & inboxes)

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OpenShip's Email Features

• Unlimited domains: send from any domain you own
• Unlimited inboxes: receive mail for any address
• SMTP API: OpenAI-compatible... no, standard SMTP + API
• Transactional & bulk: password resets, receipts, marketing
• Webhooks: delivery tracking

The key: all infrastructure is yours. No per-email pricing, no domain fees, no hard limits other than your VPS.

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Setup Steps

1. Deploy OpenShip to Your VPS

# On your $5 VPS (2GB+ RAM, Ubuntu 24.04)
git clone https://github.com/openshiporg/openship
cd openship
docker compose up -d

2. Configure the Mail Server

Set your domain's DNS (SPF, DKIM, DMARC) to point at your VPS.

3. Start Sending

Use the SMTP credentials from the OpenShip dashboard in your app.

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The Honest Downsides of Self-Hosting

• Server management required: updates, monitoring, backups are on you
• IP reputation: a fresh VPS IP needs warming up for high-volume marketing mail
• No 99.99% SLA: uptime depends on your VPS provider
• Learning curve: DNS, DKIM, SPF, DMARC setup is your job

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Summary — Should You Switch to OpenShip?

Bottom line: switch to OpenShip now if you:

• Send 5,000+ emails a month
• Can (or want to) operate one VPS
• Have ever looked at monthly SaaS invoices and thought "this is wasteful"
• Run multiple services and email costs are ballooning

Conversely, hold off for now if you:

• Send under 1,000 emails/month (free tiers suffice)
• Don't want to manage a server
• Need a 99.99% uptime guarantee

OpenShip is for everyone who's thought, "I pay $100+ a month for SaaS email when a VPS would be cheaper."

Even just for email, it saves $3,000+ a year. Plus you get a deployment platform, DB, cache, and storage. One $5 VPS delivering the value of $500/month in SaaS — that's the real appeal of OpenShip.

「Deploy anything. Own everything.」

That's OpenShip's philosophy. Email, apps, data — you own it all. That "ownership" creates long-term cost savings and freedom.

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Information in this article as of July 2026. Check official sites for the latest pricing.

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