Email APIs · side by side
Mails.ai vs Mandrill
Compare Mails.ai, Mandrill by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
These providers bill in different units. Each estimate uses its own workload; there is no same-volume price winner.
Mails.ai
0
Mandrill
0
Mails.ai
$0 / mo
Free · 0 sends
Mandrill
$0 / mo
Try for free · 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 | Mails.ai | Mandrill |
|---|---|---|
| Provider | Mails.ai | Mailchimp |
| Billing unit | sends | emails |
| Plan at selected usage | Free | Try for free |
| Monthly estimate | $0/mo | $0/mo |
| Workload | 0 sends | 0 emails |
| Free access | 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required | Up to 500 free demo/test email sends to a verified domain for new users. |
| Published plans | Free, Pro, Scale | Try for free, Transactional Email |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Mails.ai
- Mails.ai
- Mandrill
- Mailchimp
Billing unit
- Mails.ai
- sends
- Mandrill
- emails
Plan at selected usage
- Mails.ai
- Free
- Mandrill
- Try for free
Monthly estimate
- Mails.ai
- $0/mo
- Mandrill
- $0/mo
Workload
- Mails.ai
- 0 sends
- Mandrill
- 0 emails
Free access
- Mails.ai
- 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required
- Mandrill
- Up to 500 free demo/test email sends to a verified domain for new users.
Published plans
- Mails.ai
- Free, Pro, Scale
- Mandrill
- Try for free, Transactional Email
Prices checked
- Mails.ai
- 2026-10-08
- Mandrill
- 2026-10-08
Email APIs monthly cost
Mails.ai: $0Mandrill: $0
Different workloads, separate estimates
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.
Which email providers fit your needs?
Mails.ai features & plan notes
- Inbound email parsing delivered as structured JSON with automatic prompt-injection detection
- Automatic email thread reconstruction and conversation handling via REST, SSE, or webhooks
- Native Model Context Protocol (MCP) server support alongside TypeScript and Python SDKs
- Per-agent reputation monitoring and send limits with cold outreach enforcement
- 3,000 events / month
- 1 agent
- TypeScript + Python SDKs, REST
- MCP server
- Magic-link signup, no card
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
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 pricingMails.ai vs Mandrill — FAQ
Mails.ai: $0/month on Free at 0 sends. Mandrill: $0/month on Try for free at 0 emails. Different billing units are not an equal-workload comparison. Estimates exclude unlisted add-ons and taxes.
Review SMTP or API integration, domain authentication, bounce and complaint events, suppression handling and delivery-log retention.
Only when the published plan actually bills by sends. Contacts, subscribers and inboxes stay in their own billing units.
Inbound email parsing delivered as structured JSON with automatic prompt-injection detection, Automatic email thread reconstruction and conversation handling via REST, SSE, or webhooks, Native Model Context Protocol (MCP) server support alongside TypeScript and Python SDKs, Per-agent reputation monitoring and send limits with cold outreach enforcement. Free access: 3,000 events/month, 1 agent, sending via workspace subdomain, MCP server access, and SDKs with no credit card required. Check plan-specific availability and current terms on the provider's official pricing page.
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. Free access: Up to 500 free demo/test email sends to a verified domain for new users.. Check plan-specific availability and current terms on the provider's official pricing page.