Software profile Email and inbox
Spark Mail
Spark is the broadest AI mail client here: generic IMAP, Exchange, Outlook, Yahoo, iCloud and Gmail all work, and there is a real free tier. The vendor is an Irish entity, which makes it the only EU-domiciled mainstream option in this class.
- From
- €8.25
- Free plan
- Yes
- Trial
- 7 days
Best for
Mixed mailbox estates and anyone who wants AI mail with a free tier and an EU contracting entity
Strengths / Weaknesses
Strengths
- Connects to generic IMAP as well as Exchange, Outlook, Yahoo, iCloud and Gmail, so nothing has to migrate
- Real free tier, not just a trial, plus a 7 day trial of Plus and Pro in the app
- Spark Mail Limited is registered in Dublin and the supervisory authority named in its DPA is the Irish Data Protection Commission
- Publishes a DPA with EU standard contractual clauses and names its AI providers in the privacy policy
- States that your data is not used to train any AI model and that providers may retain inputs for at most 30 days
Weaknesses
- The DPA explicitly says the full list of sub-processors is not made publicly available, which is the one thing a works council will ask for
- Mail content including attachments is sent to Azure OpenAI, OpenAI, Anthropic and Google Vertex AI, so the processing chain is American even though the contract is Irish
- Data is stored on both US servers under the Data Privacy Framework and EEA servers, with no customer-selectable EU-only option
- The AI features are competent but shallower than Shortwave's, there is no deep archive question answering
Pricing
| Plan | Price | Unit | Note |
|---|---|---|---|
| Free | Price on request | per user | smart inbox, unlimited mail accounts, smart notifications, calendar |
| Plus | Price on request | per user / month, billed annually | 120 EUR per year, 10 EUR per user per month billed monthly |
| Pro | Price on request | per user / month, billed annually | 264 EUR per year, 22 EUR per user per month billed monthly |
| Enterprise | Price on request | per user / month | price on request, contact sales |
Scroll the table sideways to see every column.
Verdict
Spark is the pragmatic pick: an Irish contracting party, a published DPA, a free tier and support for every mailbox protocol that matters. The catch is that an EU contract is not EU processing, the mail bodies still go to US model providers, and the sub-processor list is deliberately withheld. If your compliance question is which law governs the contract, Spark answers it. If your question is which company reads the mail body, it does not.
Other Email and inbox software
Where we write about it
Where these numbers come from
- [1] Spark pricing accessed 2026-11-11
- [2] Spark privacy policy accessed 2026-11-11
- [3] Spark Data Processing Agreement accessed 2026-11-11
- [4] Spark Mail, about Readdle accessed 2026-11-11