Overview
Lettermint is a transactional email provider based in the Netherlands. It runs on infrastructure and IP ranges it owns in the EU (AS213427) rather than on a US hyperscaler, publishes its DPA and subprocessor list, and holds ISO/IEC 27001:2022 certification. As a Dutch B.V. with no US parent, it positions itself outside the reach of the US CLOUD Act.
You send through a REST API, SMTP relay, SDKs for PHP, Laravel and Node.js, a CLI or an MCP server. Transactional and broadcast (marketing) email run on separate IP pools, and inbound email is available from the Starter plan.
The free plan sends 300 emails a month and can be used in production. Paid plans come in three tiers at each volume: Starter (from €10 for 10,000 emails, 5 domains), Growth (from €13, 30 domains and scheduled sending) and Pro (from €15, unlimited domains, custom tracking domains, spam insights and a dedicated IP add-on from 300,000 emails). At 50,000 emails Starter costs €40 and at 500,000 it costs €270.
Spend limits let you cap a month's bill so sending pauses rather than running up overage. Data retention is 28 days on every plan.
Pricing and plans
Free tier · no card
300 emails a month, 1 domain, 1 user, API and SMTP; usable in production within its limits
At the limit Not stated The vendor does not say what happens at the limit, or we have not found it yet.
| Plan | Price | What you get |
|---|---|---|
| Free | €0/mo | 300 emails/month, 1 domain, 1 user |
| Starter 10k | €10/mo | 5 domains, inbound, open/click tracking, overage €1.50/1,000 |
| Starter 50k | €40/mo | 50,000 emails |
| Starter 125k | €85/mo | 125,000 emails, overage €1.30/1,000 |
| Starter 500k | €270/mo | 500,000 emails, overage €1.15/1,000 |
| Growth 10k | €13/mo | 30 domains, email scheduling, overage €1.15/1,000 |
| Pro 10k | €15/mo | Unlimited domains, custom tracking domains, spam insights, dedicated IP add-on |
| Custom | Custom | 1.5M+ emails/month |
What it does
- Own EU infrastructure
- Sends from Lettermint-owned servers and IP ranges inside the EU.
- Transactional and broadcast
- Both types of email from one account, on separate IP pools.
- Inbound email
- Receive email on Starter, Growth and Pro plans.
- Managed DKIM
- DKIM key hosted behind CNAME records and rotated every six months.
- Spend limits
- Cap monthly spend; sending pauses at the cap instead of billing overage.
- Developer tools
- REST API, SMTP, SDKs, CLI, MCP server, webhooks and DSN forwarding on all plans.
Strengths and limitations
Strengths
- EU company, EU-owned infrastructure and EU data residency in the DPA
- ISO 27001:2022 certified
- Inbound email from €10/mo
- Spend caps prevent surprise overage
Limitations
- Free plan is 300 emails a month
- Data retention fixed at 28 days
- Dedicated IP only on Pro from 300,000 emails
- Open and click tracking not on the free plan
Who it suits
Good for
- EU companies with sovereignty or CLOUD Act concerns
- Apps that send both transactional and broadcast email
- Teams that want a hard spending cap
Look elsewhere if
- Hobby projects that need thousands of free emails
- Teams that need long log retention
Alternatives to Lettermint
| Tool | From | Free option | Stages |
|---|---|---|---|
| Sweego Email and SMS API | €10/mo | Free tier | |
| SMTP2GO SMTP relay and email API | $10/mo | Free tier | |
| AhaSend Transactional email API and SMTP relay | $10/mo | Free tier | |
| Brevo Email marketing and transactional platform | $9/mo | Free tier | |
| Mailjet Email API, SMTP relay and campaign editor | $9/mo | Free tier | |
| SparkPost Email sending API | $15/mo | Free tier |
Questions
Is Lettermint free?
Yes, the Free plan includes 300 emails a month and can be used in production within that limit.
How much does Lettermint cost for 50,000 emails?
€40 a month on Starter, €45 on Growth or €55 on Pro.
Where is Lettermint's data stored?
In the EU, on infrastructure Lettermint owns and operates; the company is a Dutch B.V.
Does Lettermint support inbound email?
Yes, on all paid plans.
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