Email APIs · side by side
Klaviyo vs turboSMTP
Compare Klaviyo, turboSMTP 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.
Klaviyo
turboSMTP
Klaviyo
Custom / not listed
Custom / unlisted usage pricing · 10K profiles
turboSMTP
$0 / mo
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 | Klaviyo | turboSMTP |
|---|---|---|
| Provider | Klaviyo | eDisplay srl |
| Billing unit | profiles | emails |
| Plan at selected usage | Custom / unlisted usage pricing | FREE |
| Monthly estimate | Custom / not listed | $0/mo |
| Workload | 10K profiles | 0 emails |
| Free access | Limited free plan | 6,000 emails per month (capped at 200 emails per day) with no credit card required |
| Published plans | Free | FREE, BASIC, PRO, ENTERPRISE |
| Prices checked | 2026-10-08 | 2026-10-08 |
- Klaviyo
- Klaviyo
- turboSMTP
- eDisplay srl
- Klaviyo
- profiles
- turboSMTP
- emails
- Klaviyo
- Custom / unlisted usage pricing
- turboSMTP
- FREE
- Klaviyo
- Custom / not listed
- turboSMTP
- $0/mo
- Klaviyo
- 10K profiles
- turboSMTP
- 0 emails
- Klaviyo
- Limited free plan
- turboSMTP
- 6,000 emails per month (capped at 200 emails per day) with no credit card required
- Klaviyo
- Free
- turboSMTP
- FREE, BASIC, PRO, ENTERPRISE
- Klaviyo
- 2026-10-08
- turboSMTP
- 2026-10-08
Email APIs monthly cost
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 | Klaviyo | turboSMTP |
|---|---|---|
| Dedicated IP | Not listed | |
| Email Volume | Not listed | 200 / day |
| SMTP Relay and API | Not listed | |
| Interactive API Docs / Setup Guide | Not listed | |
| Domain Authentication (SPF / DKIM) | Not listed | |
| Suppression Management | Not listed | |
| Deliverability Optimization | Not listed | |
| Dedicated IP Pools | Not listed | |
| Automated Dedicated IP Routing | Not listed | |
| Custom Tracking Domain | Not listed | Demo 30d |
| Analytics Database / Real-time Analytics | Not listed | Demo 30d |
| Webhooks | Not listed | Demo 30d |
| AI Optimized Template Editor | Not listed | 10 credits |
| Email Validations | Not listed | 100 credits |
| Subaccounts | Not listed | 1 |
| API Keys (Security, Sending, Auth) | Not listed | 2 |
| Custom Sending Domains (SPF/DKIM/DMARC) | Not listed | 1 |
| 2-Factor Authentication | Not listed | |
| GDPR Compliance / EU Data Retention | Not listed | |
| Ticket / Chat / Phone Support | Not listed | Chat + Ticket |
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- 200 / day
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Demo 30d
- Klaviyo
- Not listed
- turboSMTP
- Demo 30d
- Klaviyo
- Not listed
- turboSMTP
- Demo 30d
- Klaviyo
- Not listed
- turboSMTP
- 10 credits
- Klaviyo
- Not listed
- turboSMTP
- 100 credits
- Klaviyo
- Not listed
- turboSMTP
- 1
- Klaviyo
- Not listed
- turboSMTP
- 2
- Klaviyo
- Not listed
- turboSMTP
- 1
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Klaviyo
- Not listed
- turboSMTP
- Chat + Ticket
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Which email providers fit your needs?
Klaviyo features & plan notes
- E-commerce data
- Omnichannel
- Shopify ecosystem
turboSMTP features & plan notes
- High-deliverability SMTP relay and developer REST APIs
- Real-time analytics for opens, clicks, unsubscribes, and bounces
- 24/7 customer support via ticket, live chat, and phone
- Integrated email validation and custom tracking domain configuration
- 200 emails/day
- SMTP Relay and Web API
- SPF / DKIM Authentication
- Dedicated IP (Pro only)
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