Email APIs · side by side
Mandrill vs UniOne
Compare Mandrill, UniOne by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
0
Mandrill
$0 / mo
Try for free · 0 emails
UniOne
$0 / mo
Free Trial · 0 emails
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Email APIs overview & pricing
| Email APIs | Mandrill | UniOne |
|---|---|---|
| Provider | Mailchimp | ECOMZ Holding Limited |
| Billing unit | emails | emails |
| Plan at selected usage | Try for free | Free Trial |
| Monthly estimate | $0/mo | $0/mo |
| Workload | 0 emails | 0 emails |
| Free access | Up to 500 free demo/test email sends to a verified domain for new users. | 4-month free trial with 6,000 emails/month and 100 email validations; free testing tier allows up to 100 emails/day to v |
| Published plans | Try for free, Transactional Email | Free Trial, Standard, Individual |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Mandrill
- Mailchimp
- UniOne
- ECOMZ Holding Limited
Billing unit
- Mandrill
- emails
- UniOne
- emails
Plan at selected usage
- Mandrill
- Try for free
- UniOne
- Free Trial
Monthly estimate
- Mandrill
- $0/mo
- UniOne
- $0/mo
Workload
- Mandrill
- 0 emails
- UniOne
- 0 emails
Free access
- Mandrill
- Up to 500 free demo/test email sends to a verified domain for new users.
- UniOne
- 4-month free trial with 6,000 emails/month and 100 email validations; free testing tier allows up to 100 emails/day to v
Published plans
- Mandrill
- Try for free, Transactional Email
- UniOne
- Free Trial, Standard, Individual
Prices checked
- Mandrill
- 2026-10-08
- UniOne
- 2026-10-08
Email APIs monthly cost
Mandrill: $0UniOne: $0
Cost by emails
Cost curve data
| emails | Mandrill | UniOne |
|---|---|---|
| 0 | $0 | $0 |
| 0 | $0 | $0 |
| 0 | $0 | $0 |
| 0 | $0 | $0 |
| 0 | $0 | $0 |
| 0 | $0 | $0 |
| 0 | $0 | $0 |
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
0
- Mandrill
- $0
- UniOne
- $0
Which email providers fit your needs?
Mandrill features & plan notes
- Send transactional emails via REST API or SMTP credentials
- Sold in blocks of 25,000 emails with volume discounts from $20 down to $10 per block
- Inbound email processing and real-time event webhooks
- Custom domain whitelabeling, dedicated IPs, and rules engine
- Up to 500 free email sends to your verified domain
- Streamlined template editing with drag and drop builder
- Developer documentation, guides, and SDK repositories
- Connect AI coding assistant directly through first-party MCP server
UniOne features & plan notes
- Email delivery via RESTful Web API and SMTP API
- Dynamic templating supporting Liquid, Velocity, and Simple template engines
- Drag-and-drop email builder with AI HTML editor and 200+ pre-built templates
- Real-time event webhooks, click/open tracking, and up to 100 days of analytics storage
- Integrated email validation API and automatic suppression list management
- All features of the STANDARD PLAN
- 4 months with 6,000 monthly emails
- 100 email address validations included
How to compare email providers
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Browse Email APIs pricing