SparkPost

Best for: Prototypes and side projects - free to start, no sales call; Regulated or enterprise workloads - compliance attestations and an enterprise plan; Teams needing broad API coverage out of the box

Avoid if: You need transparent pricing up front

Pricing model

Hybrid (base + usage) [2]bird.com/en-us/pricing/email“Email sending plans for every volume. Compare Starter, Premier, and Enterprise tiers.”devtune.ai/verticals/transactional-email-and-developer-email-apis/bird-formerly-messagebird/pricing“Bird Email (SparkPost) no longer offers a permanent free tier. Paid plans start at $20/month for 50,000 emails with $1.00 per thousand overage emails.”capterra.com/p/82543/SparkPost/pricing/“SparkPost has 3 pricing plans ; Starter. $20 ; Premier. $75 ; Enterprise. Contact Vendor for Pricing.”

Published pricing

✗ No [3]bird.com/en-us/pricing/email“Email sending plans for every volume. Compare Starter, Premier, and Enterprise tiers.”

Free tier

✓ Yes [4]support.sparkpost.com/docs/faq/update-on-pricing“You can continue using SparkPost for free on our "Test" plan, with limits of 500 emails/month and 100 emails/day.”

Free tier details

You can continue using SparkPost for free on our 'Test' plan, with limits of 500 emails/month and 100 emails/day. [5]support.sparkpost.com/docs/faq/update-on-pricing“You can continue using SparkPost for free on our "Test" plan, with limits of 500 emails/month and 100 emails/day.”

Self-serve signup

✓ Yes [6]support.sparkpost.com/docs/getting-started/getting-started-sparkpost“SparkPost is a developer-centric email delivery service. That means pretty much everything described in this guide can be done through the SparkPost API.”support.sparkpost.com/docs/getting-started/create-api-keys“You do not need to configure the API key for subaccounts, unless you wish to use subaccounts.”

Requires sales call

✗ No [7]support.sparkpost.com/docs/getting-started/getting-started-sparkpost“SparkPost is a developer-centric email delivery service. That means pretty much everything described in this guide can be done through the SparkPost API.”support.sparkpost.com/docs/getting-started/create-api-keys

Enterprise plan

✓ Yes [8]bird.com/en-us/pricing/email“Email sending plans for every volume. Compare Starter, Premier, and Enterprise tiers.”media.sparkpost.com/uploads/2017/01/sparkpost-enterprise-service-brief.pdf“Get your mail delivered on time every time with guaranteed peak sending rates and 99.9% uptime SLAs. Dedicated IPs.”capterra.com/p/82543/SparkPost/pricing/“SparkPost has 3 pricing plans ; Starter. $20 ; Premier. $75 ; Enterprise. Contact Vendor for Pricing.”

• Transactional send
• Marketing / broadcasts
• Inbound parsing
• Templates
• Batch send
• Scheduled send
• SMTP relay
• Dedicated IP
• Email validation
• Analytics

Supported actions

send_email, get_scheduled_transmission, delete_scheduled_transmission, create_template, list_templates, update_template, delete_template, create_sending_domain, list_sending_domains, verify_sending_domain, create_tracking_domain, list_tracking_domains, verify_tracking_domain, create_recipient_list, list_recipient_lists, update_recipient_list, delete_recipient_list, manage_suppression_list, list_suppression_list, list_message_events, get_metrics, get_deliverability_metrics, create_webhook, list_webhooks, update_webhook, delete_webhook, get_webhook_status, create_subaccount, list_subaccounts, update_subaccount, create_inbound_domain, list_inbound_domains, delete_inbound_domain, create_relay_webhook, list_relay_webhooks, update_relay_webhook, delete_relay_webhook, create_ip_pool, list_ip_pools, update_ip_pool, delete_ip_pool, list_sending_ips, list_bounce_domains, get_account_info, send_email_smtp [9]documenter.getpostman.com/view/3967924/RW1YpgPzdevelopers.sparkpost.com/api/developers.sparkpost.com/api/transmissions/“The Transmissions endpoint lets you send email. Each transmission can send an email to a single recipient or thousands.”developers.sparkpost.com/api/templates/“Templates are a way to store and edit email content.”developers.sparkpost.com/api/sending-domains/“A sending domain is a domain that is used to indicate who an email is from via the "From:" header.”developers.sparkpost.com/api/smtp/“The SparkPost SMTP API offers an SMTP relay service with extended features available through the X-MSYS-API custom header.”developers.sparkpost.com/api/ab-testing/“An A/B test is a method of comparing templates to see which performs best.”

Regions

US, EU [10]developers.sparkpost.com/api/

Input types

JSON, SMTP [11]developers.sparkpost.com/api/developers.sparkpost.com/api/transmissions/“The Transmissions endpoint lets you send email. Each transmission can send an email to a single recipient or thousands.”developers.sparkpost.com/api/smtp/“The SparkPost SMTP API offers an SMTP relay service with extended features available through the X-MSYS-API custom header.”

Output types

JSON [12]developers.sparkpost.com/api/

Webhooks

✓ Yes [13]developers.sparkpost.com/api/documenter.getpostman.com/view/3967924/RW1YpgPz

Sandbox / test mode

✗ No [14]support.sparkpost.com/docs/faq/using-sink-server“Sink testing allows you to send messages through SparkPost for integration testing without the messages being attempted for delivery to actual email addresses.”developers.sparkpost.com/api/transmissions/

SDK languages

Node.js, Python, PHP, Java, Go, Elixir, C# [15]github.com/sparkpost/python-sparkpost“The official Python package for using the SparkPost API.”github.com/SparkPost/node-sparkpost“The official Node.js binding for your favorite SparkPost APIs!”github.com/SparkPost/gosparkpost“The official Go package for using the SparkPost API.”developers.sparkpost.com

MCP server

✗ No [16]mcp.pipedream.com/app/sparkpost“Use Pipedream's MCP server to connect your SparkPost account to AI tools like Cursor, Claude, and Windsurf.”github.com/ever-works/awesome-mcp-servers/blob/master/details/sparkpost-mcp-server.md“SparkPost MCP Server exposes SparkPost's email optimization and delivery capabilities to Model Context Protocol (MCP) clients.”

SOC 2

SOC 2 Type II [17]sparkpost.com/policies/security/bird.com/legal/dpa-previous-sparkpost“SparkPost's security framework is based on the SOC2 Type II attestation and includes the following trust services criteria: Security, Availability”sparkpost.com/messagesystems-momentum/

HIPAA

✓ Yes [18]sparkpost.com/messagesystems-momentum/hipaajournal.com/sparkpost-hipaa-compliant/“SparkPost is not HIPAA compliant because the terms and conditions of the now rebranded service prohibit violations of “any legal, regulatory, self-regulatory”hipaaguide.net/is-sparkpost-hipaa-compliant/“SparkPost does not support HIPAA-compliance. The platform can be used by healthcare organizations, just not in connection with any ePHI.”netsec.news/can-sparkpost-be-deemed-hipaa-compliant/“It is therefore no shock that SparkPost does not offer healthcare groups a business associate agreement (BAA) which is necessary for HIPAA compliance.”

GDPR

✓ Yes [19]sparkpost.com/messagesystems-momentum/sparkpost.com/policies/security/sparkpost.com/policies/dpa/“We are also registered with the Dutch Authority for Consumers and Markets.”

ISO 27001

✓ Yes [20]tools.sparkpost.com/spf/builder“ISO/IEC 27001: 2022. Certified.”sparkpost.com/policies/dpa/“All our hosting providers are ISO 27001 certified. We are also registered with the Dutch Authority for Consumers and Markets.”prnewswire.com/news-releases/sparkpost-achieves-iso-27001-certification-in-latest-commitment-to-global-security-301457957.html“The scope of the ISO 27001:2013 certificate for SparkPost comprises the Information Security Management System (ISMS) supporting the operations”

PCI DSS

– Unknown [21]sparkpost.com/policies/security/

Published SLA

✓ Yes [22]sparkpost.com/messagesystems-momentum/bird.com/legal/sla-previous-2023-05“Bird's May 2023 SLA archive provides a historical reference on service level commitments, uptime guarantees, and support response times.”media.sparkpost.com/uploads/2017/01/sparkpost-enhanced-support-options-datasheet.pdf“with 99.9% uptime SLA and guaranteed burst rates.”

Known restrictions

The sandbox sending domain (sparkpostbox.com) is limited to 5 emails for the lifetime of your account, You can only use the sandbox domain with the my-first-email template, The sandbox domain is not available for Enterprise accounts, The transmission content (text + html + attachments + inline images) is limited to 20 MBs, The scheduled start time cannot be more than 3 days in the future, Scheduled transmissions cannot be deleted if the transmission is within 10 minutes of the scheduled generation time, Starter plan: 10 templates max, 10 recipient lists max, 10 sending/bounce domains max, 5 tracking domains max, 2 webhooks max, Sink server messages count against your plan's message allowance [23]developers.sparkpost.com/api/transmissions/support.sparkpost.com/docs/faq/difference-between-starter-and-premier“The Starter plans are low-cost plans that make it easy for new or low-volume senders to get started.”support.sparkpost.com/docs/faq/using-sink-server“Sink testing allows you to send messages through SparkPost for integration testing without the messages being attempted for delivery to actual email addresses.”

• Docs
• API reference
• Changelog
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.sparkpost.com/api/v1

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key, basic

Error format

vendor-specific

SDKs

• Node.js sparkpost · repo · updated 2026-04 · 177★
• Python sparkpost · repo · updated 2023-05 · 91★
• PHP sparkpost/sparkpost · repo · updated 2023-10 · 191★
• Java com.sparkpost:sparkpost-lib · repo · updated 2023-08 · 41★
• Go github.com/SparkPost/gosparkpost · repo · updated 2023-10 · 62★
• Elixir sparkpost · repo · updated 2022-11 · 43★
• C# SparkPost · repo · updated 2026-03 · 58★

• Auth docs
• Quickstart
• Webhook events

Launched

2015-04-15

GA

2015-04-15

Notable customers

The New York Times, Zillow, Adobe, Booking.com

• Mailgun

  Mailgun is the all-in-one, intelligent email delivery platform trusted by businesses and loved by developers.

  Hybrid · free tier · public pricing · self-serve

• Mailjet

  The best email marketing software that's built for devs and loved by marketers.

  Hybrid · free tier · public pricing · self-serve

• Amazon Simple Email Service

  Amazon Simple Email Service (Amazon SES) is a cloud-based email service provider that can integrate into any application for high-volume email automation.

  Usage · public pricing · self-serve

• Brevo

  Brevo is the most intuitive all-in-one customer engagement platform: email and SMS marketing, automation, CRM, live chat, and transactional email.

  Hybrid · free tier · public pricing · self-serve

• SendGrid

  Email at scale, proven deliverability, and so much more

  Hybrid · public pricing · self-serve

• MailerSend

  MailerSend is a powerful transactional email system built for developers but designed so non-tech teams can contribute without coding.

  Hybrid · free tier · public pricing · self-serve

SparkPost alternatives · SparkPost vs Mailgun · All Email APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: developers.sparkpost.com
2. ↑Pricing model: bird.com · devtune.ai · capterra.com
3. ↑Published pricing: bird.com
4. ↑Free tier: support.sparkpost.com
5. ↑Free tier details: support.sparkpost.com
6. ↑Self-serve signup: support.sparkpost.com · support.sparkpost.com
7. ↑Requires sales call: support.sparkpost.com · support.sparkpost.com
8. ↑Enterprise plan: bird.com · media.sparkpost.com · capterra.com
9. ↑Supported actions: documenter.getpostman.com · developers.sparkpost.com · developers.sparkpost.com · developers.sparkpost.com · developers.sparkpost.com · developers.sparkpost.com · developers.sparkpost.com
10. ↑Regions: developers.sparkpost.com
11. ↑Input types: developers.sparkpost.com · developers.sparkpost.com · developers.sparkpost.com
12. ↑Output types: developers.sparkpost.com
13. ↑Webhooks: developers.sparkpost.com · documenter.getpostman.com
14. ↑Sandbox: support.sparkpost.com · developers.sparkpost.com
15. ↑SDK languages: github.com · github.com · github.com · developers.sparkpost.com
16. ↑MCP server: mcp.pipedream.com · github.com
17. ↑SOC 2: sparkpost.com · bird.com · sparkpost.com
18. ↑HIPAA: sparkpost.com · hipaajournal.com · hipaaguide.net · netsec.news
19. ↑GDPR: sparkpost.com · sparkpost.com · sparkpost.com
20. ↑ISO 27001: tools.sparkpost.com · sparkpost.com · prnewswire.com
21. ↑PCI DSS: sparkpost.com
22. ↑Published SLA: sparkpost.com · bird.com · media.sparkpost.com
23. ↑Known restrictions: developers.sparkpost.com · support.sparkpost.com · support.sparkpost.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-15 Score Agent Friendliness: 10 → 20
2. 2026-06-15 Score Docs Quality: 25 → 45
3. 2026-06-15 API Reference URL: (none) → https://developer.sparkpost.com/api/
4. 2026-06-15 Robots Allows Agents: (none) → Yes
5. 2026-06-15 Has Structured Data: (none) → No
6. 2026-06-09 Best For: Prototypes and side projects — free to start, no sales call, Regulated or enter… → Prototypes and side projects - free to start, no sales call, Regulated or enter…
7. 2026-06-09 Scoring Methodology: Scores are computed deterministically from this profile's published, sourced fi… → Scores are computed deterministically from this profile's published, sourced fi…
8. 2026-06-09 Score Trust Readiness: (none) → 90
9. 2026-06-09 Avoid If: (none) → You need transparent pricing up front
10. 2026-06-09 Best For: (none) → Prototypes and side projects — free to start, no sales call, Regulated or enter…
11. 2026-06-09 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
12. 2026-06-09 Score Procurement Friction: (none) → 80
13. 2026-06-09 Score Docs Quality: (none) → 25
14. 2026-06-09 Score Setup Speed: (none) → 85
15. 2026-06-09 Score Pricing Transparency: (none) → 55
16. 2026-06-09 Score Agent Friendliness: (none) → 10
17. 2026-06-08 Changelog URL: (none) → https://www.sparkpost.com/changelog
18. 2026-06-08 Docs URL: (none) → https://developer.sparkpost.com
19. 2026-06-08 Rendering: (none) → static
20. 2026-06-08 Llms Txt Present: (none) → No
21. 2026-06-08 Status Page URL: (none) → https://status.sparkpost.com
22. 2026-06-07 Summary Md: (none) → SparkPost is a developer-friendly email delivery platform for transactional and…
23. 2026-06-07 SDK Packages: Node.js, Python, PHP, Java, Go, Elixir, C# → Node.js, Python, PHP, Java, Go, Elixir, C#
24. 2026-06-07 Github Stars At: (none) → 2026-06-07T18:55:30.898Z
25. 2026-06-07 Github Stars: (none) → 177
26. 2026-06-07 Auth Methods: (none) → api_key, basic
27. 2026-06-07 SDK Languages: Node.js, Python, PHP, Java, Go, Elixir → Node.js, Python, PHP, Java, Go, Elixir, C#
28. 2026-06-07 Notable Customers: (none) → The New York Times, Zillow, Adobe, Booking.com
29. 2026-06-07 GA Date: (none) → 2015-04-15
30. 2026-06-07 Launched At: (none) → 2015-04-15
31. 2026-06-07 Free Tier Limit: (none) → 500 emails/month
32. 2026-06-07 Price Basis: (none) → month
33. 2026-06-07 Starting Price Usd: (none) → 20
34. 2026-06-07 Data Retention Policy URL: (none) → https://bird.com/en-us/legal/dpa
35. 2026-06-07 SLA URL: (none) → https://media.sparkpost.com/uploads/2017/01/sparkpost-enterprise-service-brief.…
36. 2026-06-07 Requires Verification: (none) → No
37. 2026-06-07 Webhook Events URL: (none) → https://developers.sparkpost.com/api/webhooks/
38. 2026-06-07 Error Format: (none) → vendor-specific
39. 2026-06-07 Quickstart URL: (none) → https://support.sparkpost.com/docs/getting-started/getting-started-sparkpost
40. 2026-06-07 SDK Packages: Node.js, Python, PHP, Java, Go, Elixir → Node.js, Python, PHP, Java, Go, Elixir, C#
41. 2026-06-07 Stability: (none) → ga
42. 2026-06-07 Versioning Scheme: (none) → url
43. 2026-06-07 API Version: (none) → v1
44. 2026-06-07 Base URL: (none) → https://api.sparkpost.com/api/v1
45. 2026-06-07 API Style: (none) → rest
46. 2026-06-07 Auth Docs URL: (none) → https://support.sparkpost.com/docs/getting-started/create-api-keys
47. 2026-06-07 SDK Packages: (none) → Node.js, Python, PHP, Java, Go, Elixir
48. 2026-06-07 Capabilities: {"smtp":true,"inbound":true,"analytics":true,"marketing":true,"templates":true,… → {"smtp":true,"inbound":true,"analytics":true,"marketing":true,"templates":true,…

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/sparkpost \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/sparkpost/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

All the ways to contribute →