| What it does | Transactional email for product teams
| Free, open source email client with mail, calendar, contacts and AI
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Open source
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| Pricing | Free plan: 1,000 emails/month, no credit card required. Starter: $7/month for 10,000 emails (or $5.83/month billed yearly). Pro: $15/month for 50,000 emails (or $12.50/month billed yearly). Business: $29/month for 100,000 emails (or $24.17/month billed yearly). Yearly billing provides two months fre
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| Key features | - Per-message delivery timeline showing accepted, sent, delivered, opened and clicked status
- SMTP and REST API support, no code changes required
- Domain verification with two DNS records or Cloudflare integration
- Automatic bounce and complaint handling with do-not-send list
- DKIM signing with workspace-specific keys
- Hosted mailboxes for your domain
- Webhook delivery for bounces and complaints
- WordPress plugin for email routing
- Laravel package with one-line setup
- IMAP mailbox importer from other providers
| - Mail over IMAP or POP3 with search by sender, date and attachments
- Calendar with CalDAV sync in day, week, month and year views
- Contacts with CardDAV sync with email, phone, company and birthday fields
- Read receipts showing Delivered, Opened or Bounced status
- AI summaries, replies and questions using your own API key
- Message and reply translation between languages
- Custom signature for each mailbox
- Built-in settings for Gmail, iCloud, Outlook, Yahoo, Fastmail, Zoho, GMX, Yandex and Proton Bridge
- Open source template for building branded mail clients
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| What makes it different | - Full delivery timeline for every message visible to the entire team on one screen
- Works with existing code via SMTP or simple API with no SDK or vendor lock-in
- Automatic bounce and complaint handling prevents reputation damage
- Full product included in every plan with no features behind enterprise paywalls
| - Free and open source under MIT licence with no restrictions on use, modification or resale
- Works with any IMAP or POP3 mailbox including Gmail, iCloud, Outlook and others
- Calendar and contacts integrated in the same window with mail
- Bring your own AI from Anthropic, OpenAI, Google, xAI or Perplexity
- Build your own branded desktop app by customising the open source template
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ▲ +2 (up) since last check | 11 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 0 | 2 |
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| Citation Flow (Majestic) | 0 | 28 |
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| Referring domains (Majestic) | 0 | 41 |
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CitrusMail