Email APIs · side by side
Kit vs SparkPost
Compare Kit, SparkPost 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.
Kit
10K
SparkPost
100K
Kit
$33 / mo
Creator · 10K subscribers
SparkPost
$80 / mo
Growth · 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 | Kit | SparkPost |
|---|---|---|
| Provider | Kit | Bird |
| Billing unit | subscribers | emails |
| Plan at selected usage | Creator | Growth |
| Monthly estimate | $33/mo | $80/mo |
| Workload | 10K subscribers | 100K emails |
| Free access | Creator free plan | Trial availability varies |
| Published plans | Free, Creator, Pro | Free, Startup, Growth, Enterprise |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Kit
- Kit
- SparkPost
- Bird
Billing unit
- Kit
- subscribers
- SparkPost
- emails
Plan at selected usage
- Kit
- Creator
- SparkPost
- Growth
Monthly estimate
- Kit
- $33/mo
- SparkPost
- $80/mo
Workload
- Kit
- 10K subscribers
- SparkPost
- 100K emails
Free access
- Kit
- Creator free plan
- SparkPost
- Trial availability varies
Published plans
- Kit
- Free, Creator, Pro
- SparkPost
- Free, Startup, Growth, Enterprise
Prices checked
- Kit
- 2026-10-08
- SparkPost
- 2026-10-08
Email APIs monthly cost
Kit: $33SparkPost: $80
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 | Kit | SparkPost |
|---|---|---|
| Sending domains | Not listed | 1,000 |
| Subscribers | Unlimited | Not listed |
| Create landing pages | Unlimited | Not listed |
| Create email opt-in forms | Unlimited | Not listed |
| Create a newsletter feed & website | Not listed | |
| Landing page and form templates | Not listed | |
| Customizable domain | Not listed | |
| Unlimited traffic | Not listed | |
| Deliver opt-in incentives | Not listed | |
| List growth reporting | Not listed | |
| Free Recommendations | Not listed | |
| Smart Recommendations | Not listed | |
| Facebook custom audiences | Not listed | |
| Newsletter referral system | Not listed | |
| Growth Concierge team | Not listed | |
| Subscriber tagging | Not listed | |
| Subscriber segmentation | Not listed | |
| Unsubscribe page builder | Not listed | |
| Users | 2 | Not listed |
| Subscriber engagement scoring | Not listed | |
| Subscriber Signals | Not listed | |
| Engagement analytics | Not listed | |
| Send email broadcasts | Not listed | |
| Email template library | Not listed | |
| Image library | Not listed | |
| Create custom email templates | Not listed | |
| Conditional email content | Not listed | |
| Resend unopened campaigns | Not listed | |
| A/B split testing | 2 subject lines | Not listed |
| Remove Kit branding | Not listed | |
| Email editor version history | Not listed | |
| Schedule in subscriber’s local time zone | Not listed | |
| Advanced A/B split testing | Not listed | |
| Collaborative editing | Not listed | |
| Edit links in sent broadcasts | Not listed | |
| Deliverability reporting | Not listed | |
| Insights dashboard | Not listed | |
| Custom tracking domain | Not listed | |
| Content snippets | Not listed | |
| Visual automation template library | Unlimited | Not listed |
| Visual automation builder | Unlimited | Not listed |
| API documentation | Not listed | |
| Automated email sequences | Not listed | |
| RSS Campaigns | Not listed | |
| 100+ direct apps | Not listed | |
| Kit MCP | Not listed | |
| Sell digital products | Not listed | |
| Run paid newsletters | Not listed | |
| Sell recurring subscriptions | Not listed | |
| Set up virtual tip jars | Not listed | |
| Low transaction fees | 3.5% + 30c | Not listed |
| Paid Recommendations | Not listed | |
| Paid Recommendations fees | 23.5% | Not listed |
| Newsletter sponsorships | Not listed | |
| Abandon checkout | Not listed | |
| Kit University | Not listed | |
| Product support | 24/7 support (email & chat) | Not listed |
| Free migration from another platform | Not listed | |
| Emails / month | Not listed | 100K to 2.5M |
| Webhook endpoints | Not listed | 10 |
| Sending IP | Not listed | Dedicated IPs (add-on) |
Sending domains
- Kit
- Not listed
- SparkPost
- 1,000
Subscribers
- Kit
- Unlimited
- SparkPost
- Not listed
Create landing pages
- Kit
- Unlimited
- SparkPost
- Not listed
Create email opt-in forms
- Kit
- Unlimited
- SparkPost
- Not listed
Create a newsletter feed & website
- Kit
- SparkPost
- Not listed
Landing page and form templates
- Kit
- SparkPost
- Not listed
Customizable domain
- Kit
- SparkPost
- Not listed
Unlimited traffic
- Kit
- SparkPost
- Not listed
Deliver opt-in incentives
- Kit
- SparkPost
- Not listed
List growth reporting
- Kit
- SparkPost
- Not listed
Free Recommendations
- Kit
- SparkPost
- Not listed
Smart Recommendations
- Kit
- SparkPost
- Not listed
Facebook custom audiences
- Kit
- SparkPost
- Not listed
Newsletter referral system
- Kit
- SparkPost
- Not listed
Growth Concierge team
- Kit
- SparkPost
- Not listed
Subscriber tagging
- Kit
- SparkPost
- Not listed
Subscriber segmentation
- Kit
- SparkPost
- Not listed
Unsubscribe page builder
- Kit
- SparkPost
- Not listed
Users
- Kit
- 2
- SparkPost
- Not listed
Subscriber engagement scoring
- Kit
- SparkPost
- Not listed
Subscriber Signals
- Kit
- SparkPost
- Not listed
Engagement analytics
- Kit
- SparkPost
- Not listed
Send email broadcasts
- Kit
- SparkPost
- Not listed
Email template library
- Kit
- SparkPost
- Not listed
Image library
- Kit
- SparkPost
- Not listed
Create custom email templates
- Kit
- SparkPost
- Not listed
Conditional email content
- Kit
- SparkPost
- Not listed
Resend unopened campaigns
- Kit
- SparkPost
- Not listed
A/B split testing
- Kit
- 2 subject lines
- SparkPost
- Not listed
Remove Kit branding
- Kit
- SparkPost
- Not listed
Email editor version history
- Kit
- SparkPost
- Not listed
Schedule in subscriber’s local time zone
- Kit
- SparkPost
- Not listed
Advanced A/B split testing
- Kit
- SparkPost
- Not listed
Collaborative editing
- Kit
- SparkPost
- Not listed
Edit links in sent broadcasts
- Kit
- SparkPost
- Not listed
Deliverability reporting
- Kit
- SparkPost
- Not listed
Insights dashboard
- Kit
- SparkPost
- Not listed
Custom tracking domain
- Kit
- SparkPost
- Not listed
Content snippets
- Kit
- SparkPost
- Not listed
Visual automation template library
- Kit
- Unlimited
- SparkPost
- Not listed
Visual automation builder
- Kit
- Unlimited
- SparkPost
- Not listed
API documentation
- Kit
- SparkPost
- Not listed
Automated email sequences
- Kit
- SparkPost
- Not listed
RSS Campaigns
- Kit
- SparkPost
- Not listed
100+ direct apps
- Kit
- SparkPost
- Not listed
Kit MCP
- Kit
- SparkPost
- Not listed
Sell digital products
- Kit
- SparkPost
- Not listed
Run paid newsletters
- Kit
- SparkPost
- Not listed
Sell recurring subscriptions
- Kit
- SparkPost
- Not listed
Set up virtual tip jars
- Kit
- SparkPost
- Not listed
Low transaction fees
- Kit
- 3.5% + 30c
- SparkPost
- Not listed
Paid Recommendations
- Kit
- SparkPost
- Not listed
Paid Recommendations fees
- Kit
- 23.5%
- SparkPost
- Not listed
Newsletter sponsorships
- Kit
- SparkPost
- Not listed
Abandon checkout
- Kit
- SparkPost
- Not listed
Kit University
- Kit
- SparkPost
- Not listed
Product support
- Kit
- 24/7 support (email & chat)
- SparkPost
- Not listed
Free migration from another platform
- Kit
- SparkPost
- Not listed
Emails / month
- Kit
- Not listed
- SparkPost
- 100K to 2.5M
Webhook endpoints
- Kit
- Not listed
- SparkPost
- 10
Sending IP
- Kit
- Not listed
- SparkPost
- Dedicated IPs (add-on)
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Which email providers fit your needs?
Kit features & plan notes
- Creator newsletters
- Sequences
- Subscriber API
- For 1,000 email subscribers
- Unlimited Visual Automations
- Unlimited email sequences
- Kit MCP
- A/B test subject lines
- Survey subscribers with polls
- Remove Kit branding
- SMS marketing
- Apps & integrations
- RSS campaigns
- 24/7 email & chat support
SparkPost features & plan notes
- Deliverability analytics
- Enterprise scale
- Predictive signals
- 10 webhook endpoints
- 1,000 sending domains
- Dedicated IPs (add-on)
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