Compare
Keila vs Postmark
Focuses on transactional email delivery, not newsletter design or list management
Which to pick
Pick Keila if you want…
- Self-hosted email newsletters
- Open-source code (pentacent/keila on GitHub, AGPL-3.0 license)
- Integrations with MJML, Markdown or AWS SES (on Keila's list, not Postmark's)
Pick Postmark if you want…
- Fast, reliable transactional email
- Transactional email API
- A free plan to start with
- Integrations with Python, Ruby or PHP (on Postmark's list, not Keila's)
Side by side
- What it is
- Keila:Open-source self-hosted email newsletter platform with visual editor, analytics and API.
- Postmark:Postmark is an email delivery service for sending transactional and marketing emails via API or SMTP.
- Best for
- Keila:Self-hosted email newsletters
- Postmark:Fast, reliable transactional email
- Who it’s for
- Keila:Teams and developers needing a privacy-focused newsletter tool they can host themselves.
- Postmark:Developers and teams needing reliable email delivery.
- Pricing
- Keila:Paid
- Postmark:Freemium
- Plans
- Keila:Keila XS US$9.50 per month · Keila S US$18.28 per month · Keila M US$36.56 per month · Keila L US$73.11 per month · Keila XL US$146.22 per month
- Postmark:Free $0.00/mo · Basic $15.00/mo per month · Pro $16.50/mo per month · Platform $18.00/mo per month
- Open source
- Keila:Yes, 2,229 GitHub stars
- Postmark:—
- Works with
- Keila:MJML, Markdown, SMTP, AWS SES, Mailgun, Postmark, Sendgrid
- Postmark:Python, Ruby, PHP, cURL, SMTP
Keila features
- Visual Block Editor. Drag-and-drop editor with multi-column layouts for responsive emails.
- Markdown & MJML Support. Write newsletters in Markdown or design fully custom MJML templates.
- Form Builder & Bot Protection. Create sign-up forms with custom fields, captcha and double-opt-in verification.
- Analytics & Privacy Controls. Open-source email analytics with optional click/open tracking and full privacy toggles.
- Segmentation Engine. Visual segment editor and language to target contacts by tags, language, etc.
- Full-Featured API & Zapier Beta. Manage contacts, campaigns and automations via API; Zapier integration in private beta.
- Transactional Emails. Send one-off transactional messages (order confirmations, password resets) via API.
- SMTP & Provider Integration. Use Keila’s sending service or bring your own SMTP, AWS SES, Mailgun, Postmark or Sendgrid.
Postmark features
- Industry-leading deliverability. Ensures emails reach inboxes quickly with vetted IPs and strict spam controls.
- Message Streams. Separates transactional and marketing emails on parallel infrastructures.
- Inbound email processing. Converts inbound emails to JSON and forwards via webhooks.
- Detailed analytics. Provides bounce data, open/link tracking, and activity retention.
- Official SDKs. Libraries for many languages (Node, Python, Ruby, PHP, .NET, etc.) for easy integration.
- Sandbox mode. Test email sending without affecting real recipients.
Keila vs Postmark FAQ
Is Keila or Postmark free?+
Keila is paid. Postmark has a free plan; paid plans start at $15/month (Basic).
Is Keila or Postmark open source?+
Keila is open source (pentacent/keila on GitHub, AGPL-3.0 license). DevHunt has no public source repository on record for Postmark.
Do Keila and Postmark integrate with the same tools?+
Partly. Both list SMTP. Keila also lists MJML, Markdown, AWS SES, Mailgun and 2 more; Postmark also lists Python, Ruby, PHP and cURL.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.