Email APIs · side by side
SparkPost vs turboSMTP
Compare SparkPost, turboSMTP by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
100K
SparkPost
$80 / mo
Growth · 100K emails
turboSMTP
Custom / not listed
No priced plan for this volume · 100K 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 | SparkPost | turboSMTP |
|---|---|---|
| Provider | Bird | eDisplay srl |
| Billing unit | emails | emails |
| Plan at selected usage | Growth | No priced plan for this volume |
| Monthly estimate | $80/mo | Custom / not listed |
| Workload | 100K emails | 100K emails |
| Free access | Trial availability varies | 6,000 emails per month (capped at 200 emails per day) with no credit card required |
| Published plans | Free, Startup, Growth, Enterprise | FREE, BASIC, PRO, ENTERPRISE |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- SparkPost
- Bird
- turboSMTP
- eDisplay srl
Billing unit
- SparkPost
- emails
- turboSMTP
- emails
Plan at selected usage
- SparkPost
- Growth
- turboSMTP
- No priced plan for this volume
Monthly estimate
- SparkPost
- $80/mo
- turboSMTP
- Custom / not listed
Workload
- SparkPost
- 100K emails
- turboSMTP
- 100K emails
Free access
- SparkPost
- Trial availability varies
- turboSMTP
- 6,000 emails per month (capped at 200 emails per day) with no credit card required
Published plans
- SparkPost
- Free, Startup, Growth, Enterprise
- turboSMTP
- FREE, BASIC, PRO, ENTERPRISE
Prices checked
- SparkPost
- 2026-10-08
- turboSMTP
- 2026-10-08
Email APIs monthly cost
SparkPost: $80turboSMTP: Not priced
Cost by emails
Cost curve data
| emails | SparkPost | turboSMTP |
|---|---|---|
| 0 | $0 | $0 |
| 25K | $15 | Not priced |
| 50K | $15 | Not priced |
| 100K | $80 | Not priced |
| 200K | Not priced | Not priced |
| 500K | Not priced | Not priced |
| 1M | Not priced | Not priced |
0
- SparkPost
- $0
- turboSMTP
- $0
25K
- SparkPost
- $15
- turboSMTP
- Not priced
50K
- SparkPost
- $15
- turboSMTP
- Not priced
100K
- SparkPost
- $80
- turboSMTP
- Not priced
200K
- SparkPost
- Not priced
- turboSMTP
- Not priced
500K
- SparkPost
- Not priced
- turboSMTP
- Not priced
1M
- SparkPost
- Not priced
- turboSMTP
- Not priced
Email APIs feature comparison
| Email APIs | SparkPost | turboSMTP |
|---|---|---|
| Sending domains | 1,000 | Not listed |
| Emails / month | 100K to 2.5M | Not listed |
| Webhook endpoints | 10 | Not listed |
| Sending IP | Dedicated IPs (add-on) | Not listed |
Sending domains
- SparkPost
- 1,000
- turboSMTP
- Not listed
Emails / month
- SparkPost
- 100K to 2.5M
- turboSMTP
- Not listed
Webhook endpoints
- SparkPost
- 10
- turboSMTP
- Not listed
Sending IP
- SparkPost
- Dedicated IPs (add-on)
- turboSMTP
- Not listed
Which email providers fit your needs?
SparkPost features & plan notes
- Deliverability analytics
- Enterprise scale
- Predictive signals
- 10 webhook endpoints
- 1,000 sending domains
- Dedicated IPs (add-on)
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
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