Email APIs · side by side
Mandrill vs Reply.io
Compare Mandrill, Reply.io 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.
Mandrill
0
Reply.io
0
Mandrill
$0 / mo
Try for free · 0 emails
Reply.io
$59 / mo
Email Volume · 0 active contacts
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 | Reply.io |
|---|---|---|
| Provider | Mailchimp | ReplyApp Inc. |
| Billing unit | emails | active contacts |
| Plan at selected usage | Try for free | Email Volume |
| Monthly estimate | $0/mo | $59/mo |
| Workload | 0 emails | 0 active contacts |
| Free access | Up to 500 free demo/test email sends to a verified domain for new users. | None (14-day free trial available) |
| Published plans | Try for free, Transactional Email | Email Volume, Multichannel, Agency Core, Agency AI SDR, AI SDR Starter, AI SDR Growth, AI SDR Enterprise, Hybrid plan |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Mandrill
- Mailchimp
- Reply.io
- ReplyApp Inc.
Billing unit
- Mandrill
- emails
- Reply.io
- active contacts
Plan at selected usage
- Mandrill
- Try for free
- Reply.io
- Email Volume
Monthly estimate
- Mandrill
- $0/mo
- Reply.io
- $59/mo
Workload
- Mandrill
- 0 emails
- Reply.io
- 0 active contacts
Free access
- Mandrill
- Up to 500 free demo/test email sends to a verified domain for new users.
- Reply.io
- None (14-day free trial available)
Published plans
- Mandrill
- Try for free, Transactional Email
- Reply.io
- Email Volume, Multichannel, Agency Core, Agency AI SDR, AI SDR Starter, AI SDR Growth, AI SDR Enterprise, Hybrid plan
Prices checked
- Mandrill
- 2026-10-08
- Reply.io
- 2026-10-08
Email APIs monthly cost
Mandrill: $0Reply.io: $59
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.
Email APIs feature comparison
| Email APIs | Mandrill | Reply.io |
|---|---|---|
| Active Contacts | Not listed | Starts from 1.000 contacts |
| Mailboxes | Not listed | Unlimited |
| Email warm-ups in Mailtoaster.ai | Not listed | Unlimited |
| LinkedIn automation | Not listed | $69/month per account |
| Calls & SMS | Not listed | $29/month per user |
| Data credits / month | Not listed | 50 included |
| More Data Credits | Not listed | Paid Packages |
| Domain purchase | Not listed | |
| Email search extension | Not listed | |
| Email validation | Not listed | start from $20/month |
| Dialer and Cloud Calls | Not listed | $29/month per user |
| Live Data | Not listed | 50 credits + paid packages |
| Real time B2B data by Generect | Not listed | starting at $39/months |
| Onboarding with the CSM | Not listed | Included on annual |
Active Contacts
- Mandrill
- Not listed
- Reply.io
- Starts from 1.000 contacts
Mailboxes
- Mandrill
- Not listed
- Reply.io
- Unlimited
Email warm-ups in Mailtoaster.ai
- Mandrill
- Not listed
- Reply.io
- Unlimited
LinkedIn automation
- Mandrill
- Not listed
- Reply.io
- $69/month per account
Calls & SMS
- Mandrill
- Not listed
- Reply.io
- $29/month per user
Data credits / month
- Mandrill
- Not listed
- Reply.io
- 50 included
More Data Credits
- Mandrill
- Not listed
- Reply.io
- Paid Packages
Domain purchase
- Mandrill
- Not listed
- Reply.io
Email search extension
- Mandrill
- Not listed
- Reply.io
Email validation
- Mandrill
- Not listed
- Reply.io
- start from $20/month
Dialer and Cloud Calls
- Mandrill
- Not listed
- Reply.io
- $29/month per user
Live Data
- Mandrill
- Not listed
- Reply.io
- 50 credits + paid packages
Real time B2B data by Generect
- Mandrill
- Not listed
- Reply.io
- starting at $39/months
Onboarding with the CSM
- Mandrill
- Not listed
- Reply.io
- Included on annual
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
Reply.io features & plan notes
- Multichannel sequences across email, LinkedIn, calls, SMS, and WhatsApp
- Unlimited connected mailboxes with automated email warmup
- Autonomous AI SDR agent (Jason AI) for prospecting and meeting booking
- Comprehensive REST API and MCP server support for agentic sales automation
- Email Automation (∞ mailboxes, subject to Fair Usage Policy)
- LinkedIn Automation ($69 /mo/acct)
- Calls & SMS Automation ($29 /mo/acct)
- Email warm-up (Included with every mailbox)
- Unlimited emails
- 50 Live data credits/month
- Anti-spam & deliverability suite
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