| 1 |
Postmark |
|
10/10 |
1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 3 |
- Claude Haiku 5.5 (#1) Best deliverability for transactional mail, fast support, and clean, reliable message streams.
- GPT-6 Luna (#1) Outstanding transactional focus, dependable delivery, clear analytics, and unusually helpful support.
- Gemini 4 Argon (#1) Unmatched deliverability and speed by strictly separating transactional and promotional traffic.
- Qwen 3.8 Flash (#1) Best-in-class transactional deliverability and honest speed reporting.
- GLM-5.3 (#1) Best deliverability and support for transactional email; worth the premium price.
- Kimi K3 (#1) Best deliverability and speed focus; transactional-only model keeps inbox placement exceptional.
- MiniMax M3 (#1) Best deliverability, transparent pricing, fast reliable sending
- Mistral Large 4 (#1) Best deliverability, developer-first, transparent pricing for transactional email.
- DeepSeek V4 Pro (#2) Blazing fast delivery, clean UI, no marketing emails allowed, excellent deliverability.
|
| 2 |
SendGrid |
|
10/10 |
3 | 4 | 5 | 2 | 1 | 2 | 5 | 2 | 2 | 1 |
- DeepSeek V4 Pro (#1) Massive scale, robust APIs, generous free tier, deep analytics.
- Qwen 3.8 Flash (#2) Massive scale, strong APIs, widely supported by developers.
- GLM-5.3 (#2) Feature-rich standard with huge ecosystem, though support has slipped.
- MiniMax M3 (#2) Mature platform, strong APIs, scalable infrastructure
- Mistral Large 4 (#2) Tight Twilio integration, solid free tier, strong scale for growing teams.
- Claude Haiku 5.5 (#3) Mature, scalable API with broad features, though its interface and pricing can frustrate.
- GPT-6 Luna (#4) Mature infrastructure, broad integrations, and solid tooling suit businesses needing an established platform.
- Gemini 4 Argon (#5) Comprehensive tooling and proven enterprise scale, despite declining support and shared IP issues.
- Kimi K3 (#5) Mature, reliable, great APIs and analytics; scales from startups to enterprise.
|
| 3 |
Amazon SES |
|
10/10 |
2 | 2 | 3 | 3 | 4 | 3 | 2 | 4 | 4 | 4 |
- Claude Haiku 5.5 (#2) Extremely cheap at scale; requires more setup but dependable for developers.
- GPT-6 Luna (#2) Excellent deliverability and scale at very low cost; best when you can handle its technical setup.
- Kimi K3 (#2) Unbeatable price at scale with solid deliverability if you manage reputation carefully.
- Gemini 4 Argon (#3) Unbeatable dirt-cheap pricing and massive scale, though setup requires technical effort.
- Qwen 3.8 Flash (#3) Cheapest reliable option if you can manage deliverability yourself.
- GLM-5.3 (#3) Cheapest at scale, extremely reliable if you manage setup yourself.
- DeepSeek V4 Pro (#4) Unbeatable price per email, tight AWS integration, rock-solid infrastructure.
- MiniMax M3 (#4) Cheapest reliable sending at scale, AWS-native integration
- Mistral Large 4 (#4) Cheapest option by far, but you trade deliverability support for raw cost savings.
|
| 4 |
Mailgun |
|
10/10 |
4 | 5 | 4 | 4 | 3 | 4 | 4 | 3 | 3 | 2 |
- DeepSeek V4 Pro (#3) Developer-first, powerful email API, great for high-volume transactional sending.
- MiniMax M3 (#3) Developer-first API, solid deliverability, good logs
- Mistral Large 4 (#3) Flexible API, great for devs who need granular control and logs.
- Claude Haiku 5.5 (#4) Solid developer API, flexible routing, and strong logs for debugging delivery issues.
- Gemini 4 Argon (#4) Powerful routing rules, detailed logs, and rock-solid APIs built specifically for developers.
- Qwen 3.8 Flash (#4) Developer-friendly API with solid routing and logs.
- GLM-5.3 (#4) Strong API and logs; pricing changes have hurt its reputation.
- Kimi K3 (#4) Developer-friendly APIs, strong inbox placement, excellent logs and validation tools.
- GPT-6 Luna (#5) Flexible APIs and capable deliverability tools make it valuable for technical teams and complex sending.
|
| 5 |
Resend |
|
10/10 |
5 | 3 | 2 | 5 | 7 | 5 | 3 | 5 | 7 | 8 |
- Gemini 4 Argon (#2) Best-in-class developer experience with modern APIs and seamless React Email integration.
- GPT-6 Luna (#3) Modern developer experience, clean APIs, and fast integration make it a strong default for new apps.
- Kimi K3 (#3) Modern DX, clean API, react email support; best new option for developer-first teams.
- Claude Haiku 5.5 (#5) Modern developer experience with simple API and React email templates.
- Qwen 3.8 Flash (#5) Modern React-email DX that makes sending delightful.
- GLM-5.3 (#5) Modern developer experience with excellent APIs; new but excellent value.
- MiniMax M3 (#5) Modern DX, clean React Email integration, fast setup
- DeepSeek V4 Pro (#7) Developer darling, React Email compatible, elegant API, great deliverability.
- Mistral Large 4 (#7) Modern developer experience, rapidly gaining traction, React email built-in.
|
| 6 |
Brevo |
|
10/10 |
6 | 6 | 8 | 6 | 8 | 8 | 6 | 7 | 6 | 7 |
- Claude Haiku 5.5 (#6) Affordable all-in-one option with transactional API and marketing tools included.
- GPT-6 Luna (#6) Good-value transactional email with accessible tooling, especially for smaller teams and mixed email needs.
- Qwen 3.8 Flash (#6) Generous free tier plus email/SMS in one affordable plan.
- Kimi K3 (#6) Generous free tier and combines transactional with marketing at very fair prices.
- Mistral Large 4 (#6) Generous free tier with marketing features bolted on, decent all-rounder.
- MiniMax M3 (#7) Affordable, combines email/transactional/SMS in one
- Gemini 4 Argon (#8) Great value combining reliable transactional delivery with built-in marketing and CRM tools.
- DeepSeek V4 Pro (#8) Affordable all-in-one, transactional and marketing, strong SMTP and API features.
- GLM-5.3 (#8) Affordable all-in-one with generous transactional tier; less polished APIs.
|
| 7 |
SparkPost |
|
8/10 |
7 | 7 | 7 | | 5 | 6 | 7 | | 9 | 5 |
- DeepSeek V4 Pro (#5) Enterprise-grade deliverability, predictive analytics, 40% free tier of paid plan.
- GLM-5.3 (#6) Great deliverability heritage; uncertain roadmap after PowerMTA focus.
- Claude Haiku 5.5 (#7) Enterprise-grade deliverability and analytics, though pricing suits larger senders.
- GPT-6 Luna (#7) Strong deliverability analytics and proven scale appeal to high-volume, data-driven senders.
- Gemini 4 Argon (#7) Enterprise-grade analytics and predictive deliverability intelligence for massive volume senders.
- Kimi K3 (#7) Enterprise-grade deliverability analytics and high-volume performance at competitive pricing.
- Mistral Large 4 (#9) Strong deliverability analytics, but pricing and UX lag behind newer rivals.
|
| 8 |
Mandrill |
|
8/10 |
9 | | 10 | 9 | 9 | 7 | 8 | | 5 | 6 |
- Mistral Large 4 (#5) Formerly Mandrill, familiar brand, fine if you're already in Mailchimp's ecosystem.
- GLM-5.3 (#7) Solid Mailchimp add-on for Mailchimp users; awkward standalone choice.
- Kimi K3 (#8) Reliable delivery and natural fit for teams already using Mailchimp for marketing.
- Claude Haiku 5.5 (#9) Useful if already in the Mailchimp ecosystem, though it is less compelling standalone.
- Qwen 3.8 Flash (#9) Convenient add-on if you already live in Mailchimp.
- DeepSeek V4 Pro (#9) Formerly Mandrill, solid deliverability, deep Mailchimp ecosystem integration.
- Gemini 4 Argon (#10) Rock-solid reliability, but only worth paying for if you already use Mailchimp.
|
| 9 |
MailerSend |
|
4/10 |
| | 6 | | 6 | 9 | | | 10 | |
- Gemini 4 Argon (#6) Intuitive modern interface with excellent template builders for non-developers and developers alike.
- DeepSeek V4 Pro (#6) Modern UI, generous monthly free emails, excellent deliverability tools and templates.
- Mistral Large 4 (#10) Clean UI, good templates, affordable without sacrificing reliability.
|
| 10 |
Mailjet |
|
5/10 |
8 | 9 | | 7 | | 10 | | 9 | | |
- GPT-6 Luna (#9) Affordable transactional sending with useful collaboration features and a relatively approachable interface.
- GLM-5.3 (#10) Decent combined marketing/transactional option with good collaboration tools.
|
| 11 |
Customer.io |
|
2/10 |
| | | | | | | 6 | 8 | |
- MiniMax M3 (#6) Best for behavior-driven transactional and triggered flows
|
| 12 |
SMTP2GO |
|
3/10 |
| 8 | | | 10 | | 9 | | | |
- GPT-6 Luna (#8) Straightforward setup, reliable sending, and responsive support work well for small businesses.
- Kimi K3 (#9) Dependable deliverability with responsive support and straightforward, predictable pricing.
- DeepSeek V4 Pro (#10) Reliable worldwide delivery, real-time reporting, dead-simple setup, great support.
|
| 13 |
Elastic Email |
|
2/10 |
| 10 | | 8 | | | | | | |
- Qwen 3.8 Flash (#8) Budget-friendly volume sender with decent API tooling.
- GPT-6 Luna (#10) Low-cost option with broad functionality, though support and polish trail the strongest providers.
|
| 14 |
Knock |
|
1/10 |
| | | | | | | 8 | | |
- MiniMax M3 (#8) Excellent multi-channel notification infrastructure for product teams
|
| 15 |
Mailtrap |
|
1/10 |
| | 9 | | | | | | | |
|