Subprocessors
Last updated October 27, 2026
To run EterMail we rely on a small number of service providers ("subprocessors") that may process personal data on our behalf, including data of our customers' contacts. Each one processes data only to provide its service to us, under a contract that requires appropriate protection. This page complements section 5 of our privacy policy.
Services you choose to connect yourself, such as your Shopify store or your own SMTP/IMAP mailbox, are not on this list: you have your own agreement with them, and EterMail only exchanges data with them on your instructions.
Infrastructure and delivery
| Subprocessor | What it does for EterMail | Personal data it may process |
|---|---|---|
| Railway Corporation | Hosts the application, its database and background job queue | All account data and customer data stored in EterMail |
| Cloudflare, Inc. | DNS, content delivery and security proxy for etermail.ai; R2 storage for images used in emails; routing of mail sent to our support address | Visitors' IP addresses and request details; images you upload or generate; messages sent to [email protected] |
| Amazon Web Services, Inc. (Amazon SES, US West region) | Sends email: sign-in codes and other account emails, and your marketing email; reports bounces and complaints | Recipient email addresses, email content, delivery, bounce and complaint events |
| Resend, Inc. | Sends email on some sending routes, verifies sending domains and reports delivery events | Recipient email addresses, email content, delivery events |
| Stripe, Inc. | Payments, subscriptions, invoices and the billing portal | Billing name and email, payment details (card numbers are handled by Stripe and never reach us), invoices and payment history |
AI features
| Subprocessor | What it does for EterMail | Personal data it may process |
|---|---|---|
| OpenRouter, Inc. | Routes requests from AI features (drafting campaigns, outreach openers and replies, the free AI email generator) to the model provider configured for each feature | The content needed for the result: brand profile, campaign brief, a prospect's public company information, conversation text you ask for a draft on |
| AI model providers reached through OpenRouter: currently OpenAI (in-app AI features) and NVIDIA and Alibaba Cloud (Qwen) models (the free public AI email generator) | Generate the text the feature asks for | Same as OpenRouter |
| WaveSpeed AI | Generates images for emails (OpenAI image model) | Image prompts and reference product images you choose |
Sign-in, mailboxes, analytics and support
| Subprocessor | What it does for EterMail | Personal data it may process |
|---|---|---|
| Google LLC | "Continue with Google" sign-in; connecting a Gmail or Google Workspace mailbox for outreach; Google Analytics on our public website (not inside the app) | Name, email and profile picture from Google sign-in; mail sent and received through a mailbox you connect; pseudonymous website usage data (no analytics cookies for visitors in the EEA, UK and Switzerland) |
| Microsoft Corporation | Connecting an Outlook or Microsoft 365 mailbox for outreach | Mail sent and received through a mailbox you connect |
| Telegram Messenger Inc. | Notifies our support team when a website chat visitor asks for a person, and carries the team's reply back | The chat messages, and the name and email address the visitor gives |
| Functional Software, Inc. (Sentry) | Error monitoring for our servers, when enabled | Error reports, which can include a user ID, IP address and the page or request that failed |
Changes
We update this page when we add or replace a subprocessor. Questions, or a copy of the data protection terms with a subprocessor: [email protected].