Compliance 7 min read Updated April 2026

Transactional Email and Data Privacy: What Developers Need to Know

Transactional emails contain personal data — email addresses, names, order details, account information. Here's what GDPR requires, what data your email provider stores, and how to choose a compliant provider.

What personal data is in transactional email?

Transactional emails typically contain multiple categories of personal data:

Email address

Recipient address, CC/BCC addresses

Always present

Name

"Dear John Smith" in email body

Common

Order details

Products, prices, shipping address

E-commerce

Account information

Username, account ID, subscription details

SaaS

Authentication tokens

Password reset links, verification codes

High sensitivity

Financial data

Invoice amounts, payment confirmations

Financial services

What data does your email provider store?

This is the critical question. Different providers have very different data retention policies:

Provider	Email body stored?	Retention period	EU hosted?
Emitlo	No — cleared after send	Metadata only (14–90 days)	✅
Postmark	Yes	45 days	❌
SendGrid	Yes	7 days (activity)	❌
Mailjet	Yes	Varies	⚠️
Mailgun	Yes	3 days (logs)	❌

Emitlo takes data privacy seriously — EU infrastructure, no email content stored, transparent data handling. Start free →

GDPR requirements for transactional email

Legal basis for processing

Transactional emails are typically justified under "contract performance" (Article 6(1)(b)) — you need to send a password reset to fulfill your service contract. Document your legal basis for each email type.

Data minimization

Only collect and store the personal data necessary for the purpose. If you don't need to store email body content, don't. Emitlo clears email body content immediately after delivery.

Storage limitation

Don't store personal data longer than necessary. Define retention periods for email logs and metadata. Emitlo's free plan retains metadata for 14 days; Pro plan for 90 days.

Right to erasure

Individuals can request deletion of their personal data. If your email provider stores email content, you must be able to delete it on request. Emitlo doesn't store email body content, simplifying this obligation.

Data Processing Agreement (DPA)

If you use a third-party email provider, you must have a DPA in place. This is a contract that defines how the processor handles personal data on your behalf.

Data transfers outside EU

If your email provider is US-based, data transfers to the US require additional safeguards (Standard Contractual Clauses). EU-hosted providers like Emitlo avoid this complexity.

How Emitlo handles data privacy

✓Email body content is cleared immediately after the message is queued for delivery — never stored in the database
✓Only metadata is retained: recipient address, delivery status, event timestamps
✓Infrastructure is hosted in Europe (EU data residency)
✓Metadata retention: 14 days (Free plan), 90 days (Pro plan)
✓Data Processing Agreement (DPA) available on request
✓No third-party data sharing for advertising or analytics

GDPR-compliant transactional email — no email content stored

12,000 emails/month free (400/day) · EU hosting · No credit card

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Frequently Asked Questions

Is transactional email subject to GDPR?

Yes. GDPR applies to any processing of personal data of EU residents, including transactional email. The recipient's email address is personal data. The email content may contain additional personal data (name, order details, etc.). You must have a legal basis for processing (typically 'contract performance' for transactional emails).

Do transactional emails need an unsubscribe link?

Transactional emails triggered by user actions (password resets, order confirmations) are generally exempt from unsubscribe requirements under CAN-SPAM and GDPR, as they are necessary for contract performance. However, account notification emails (newsletters, product updates) do require an unsubscribe link even if sent through a transactional email service.

How long can I store email content under GDPR?

GDPR requires data minimization — you should only store personal data for as long as necessary. Email body content often contains personal data (names, addresses, order details). Emitlo clears email body content immediately after delivery, retaining only metadata. This is the most GDPR-compliant approach.

What is the right to erasure for email?

Under GDPR, individuals have the right to request deletion of their personal data. If you store email content, you must be able to delete it on request. Emitlo does not store email body content, so there's nothing to delete. You still need to handle deletion of metadata (delivery logs) on request.

Is Emitlo GDPR compliant?

Yes. Emitlo is EU-hosted and does not store email body content — it is cleared immediately after delivery. Only metadata (recipient address, delivery status, timestamps) is retained. This is the strongest GDPR compliance posture available for a transactional email provider.

What should I look for in a GDPR-compliant email provider?

Key criteria: (1) EU data hosting, (2) no email body content stored long-term, (3) clear data retention policies, (4) Data Processing Agreement (DPA) available, (5) ability to delete data on request, (6) transparent subprocessor list.