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EmailEngine

Tallinn, Estonia

Plans and prices

Annual subscription

$1,450a year

Unlimited connected mailboxes · unlimited production, staging and development instances · unlimited API calls and webhooks · support directly from the developer

Enterprise perpetual licence

Priced on request

Perpetual licence · offline verification · invoice or wire transfer · custom contract and licence terms

Every plan, in full

On the record

AI agents
An optional MCP server, currently in beta, lets connected AI clients search, read, file, draft and send email with approved access.emailengine.app · read 8 Oct 2026
Authentication
It offers managed OAuth2, Google Workspace service accounts, Microsoft 365 app-only access, and shared or delegated mailbox support.emailengine.app · read 8 Oct 2026
Compliance
EmailEngine does not come with SOC 2 or ISO 27001 certification; its compliance posture depends on the environment where it is deployed.emailengine.app · read 8 Oct 2026
Data handling
EmailEngine runs on the customer’s infrastructure, caches sync metadata in the customer’s Redis, and fetches message bodies on demand rather than storing them.emailengine.app · read 8 Oct 2026
Deployment requirement
Running EmailEngine requires a server and Redis, which must use the noeviction policy.emailengine.app · read 8 Oct 2026
Email handling
It sends webhooks when mailbox messages or state change and can send email through the connected account’s SMTP server or provider API.emailengine.app · read 8 Oct 2026
Intended users
The maker describes CRM, SaaS and AI businesses, and teams with data-residency requirements or many mailboxes, as fitting use cases.emailengine.app · read 8 Oct 2026
Maker
EmailEngine is made by Postal Systems OÜ, an Estonian company based in Tallinn; its about page identifies Andris Reinman as the founder and developer.emailengine.app · read 8 Oct 2026
Notable limits
It does not support POP3, ActiveSync or Exchange Web Services, and it does not keep a sent-mail archive or webhook delivery history.emailengine.app · read 8 Oct 2026
Operations
The admin interface includes account sync status and queue inspection, and the product provides a Prometheus endpoint and Grafana dashboard.emailengine.app · read 8 Oct 2026
Product
EmailEngine is a self-hosted email API that connects existing Gmail, Microsoft 365 and IMAP mailboxes through a unified REST API.emailengine.app · read 8 Oct 2026
Provider integrations
It supports Gmail and Google Workspace, Microsoft 365 and Outlook.com, plus IMAP servers; native integrations use Gmail API and Microsoft Graph.emailengine.app · read 8 Oct 2026
Security
Stored mailbox credentials and OAuth2 tokens can be encrypted with AES-256-GCM when the deployment’s EENGINE_SECRET key is configured.emailengine.app · read 8 Oct 2026
Support
The maker says support goes directly to the developer who wrote the code, and its annual subscription includes developer support.emailengine.app · read 8 Oct 2026
Trial
Each installation can start a full-functionality 14-day trial from its dashboard without signup or a credit card.emailengine.app · read 8 Oct 2026

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