| 1 |
Amazon SES |
|
10/10 |
2 | 1 | 3 | 1 | 2 | 2 | 2 | 2 | 4 | 3 |
- GPT-6 Luna (#1) Excellent deliverability and low cost at scale, though setup and operations are more hands-on.
- Qwen 3.8 Flash (#1) Cheapest at scale, reliable for transactional mail; DIY deliverability though.
- Claude Haiku 5.5 (#2) Very low cost at scale, reliable, but needs more setup work.
- DeepSeek V4 Pro (#2) Dirt cheap at scale; rock-solid infrastructure, ideal if already in AWS ecosystem.
- GLM-5.3 (#2) Cheapest at scale, excellent deliverability, ideal for receipts and resets.
- Kimi K3 (#2) Cheapest at scale, rock-solid reliability, integrates with AWS ecosystem, but requires more setup
- MiniMax M3 (#2) Cheapest at scale with solid deliverability if you can handle setup.
- Gemini 4 Argon (#3) Unmatched cost-effectiveness and scalability for high volumes, though setup requires more effort.
- Nemotron 3 Ultra (#3) Lowest cost at scale with high deliverability
- Mistral Large 4 (#4) Extremely cheap and scales effortlessly on AWS infrastructure.
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| 2 |
Postmark |
|
10/10 |
1 | 2 | 1 | 2 | 4 | 3 | 1 | 3 | 3 | 4 |
- Claude Haiku 5.5 (#1) Best deliverability for transactional mail; strict separation from marketing streams.
- Gemini 4 Argon (#1) Unbeatable deliverability and speed specifically built for mission-critical transactional emails like password resets.
- Kimi K3 (#1) Best-in-class deliverability, obsessive about transactional email, fast support, predictable pricing
- GPT-6 Luna (#2) Highly reliable transactional delivery with clear tooling for resets, receipts, and notifications.
- Qwen 3.8 Flash (#2) Built specifically for transactional email; fastest inbox, great receipts.
- GLM-5.3 (#3) Best-in-class transactional deliverability and support; slightly pricier.
- MiniMax M3 (#3) Excellent for transactional emails like resets and receipts.
- Mistral Large 4 (#3) Best-in-class deliverability for transactional email, trusted by developers.
- DeepSeek V4 Pro (#4) Blazing fast delivery, excellent for receipts and password resets where speed matters.
- Nemotron 3 Ultra (#4) Fastest delivery and best focus on transactional email
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| 3 |
SendGrid |
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10/10 |
3 | 4 | 5 | 3 | 1 | 1 | 4 | 1 | 1 | 1 |
- DeepSeek V4 Pro (#1) Best all-around for transactional email; great deliverability, generous free tier, mature APIs.
- GLM-5.3 (#1) Reliable transactional delivery, strong APIs, generous free tier, Twilio backing.
- MiniMax M3 (#1) Best balance of reliability, deliverability, and developer experience.
- Mistral Large 4 (#1) Reliable transactional delivery with excellent API and easy setup.
- Nemotron 3 Ultra (#1) Best deliverability and developer experience for transactional emails
- Claude Haiku 5.5 (#3) Mature API and templates; widely used, though reputation has varied.
- Qwen 3.8 Flash (#3) Proven high-volume API, solid docs, handles resets and notifications well.
- GPT-6 Luna (#4) Mature platform with broad integrations, analytics, and dependable transactional email capabilities.
- Kimi K3 (#4) Mature platform, good deliverability, extensive features, but UI and pricing can feel bloated
- Gemini 4 Argon (#5) Industry giant with massive scale, mature SDKs, and combined marketing and transactional features.
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| 4 |
Mailgun |
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10/10 |
4 | 5 | 4 | 5 | 3 | 4 | 5 | 4 | 2 | 2 |
- Mistral Large 4 (#2) Flexible API with powerful routing and email validation features.
- Nemotron 3 Ultra (#2) Powerful API and excellent analytics for transactional mail
- DeepSeek V4 Pro (#3) Developer-first, powerful APIs, strong deliverability analytics for transactional needs.
- Claude Haiku 5.5 (#4) Developer-friendly API with solid logs and EU region options.
- Gemini 4 Argon (#4) Powerful routing rules, detailed logs, and rock-solid APIs tailored for technical teams.
- GLM-5.3 (#4) Developer-friendly APIs and routing; solid reputation management.
- MiniMax M3 (#4) Strong API, good logs, developer-friendly with solid deliverability.
- GPT-6 Luna (#5) Strong APIs and deliverability tools suit application-triggered email workflows.
- Qwen 3.8 Flash (#5) Developer-friendly routing and strong inbound/outbound transactional features.
- Kimi K3 (#5) Powerful API, flexible routing, good for complex sending logic, but support quality varies
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| 5 |
Resend |
|
10/10 |
5 | 3 | 2 | 4 | 5 | 5 | 3 | 5 | 5 | 5 |
- Gemini 4 Argon (#2) Best modern developer experience with React Email integration and clean, simple APIs.
- GPT-6 Luna (#3) Developer-friendly APIs and modern tooling make transactional email quick to integrate.
- Kimi K3 (#3) Developer-first DX, React Email templates, excellent docs, generous free tier, modern API design
- Qwen 3.8 Flash (#4) Modern DX, React emails, generous free tier; newer but fast-growing.
- Claude Haiku 5.5 (#5) Modern developer experience with clean APIs and React email support.
- DeepSeek V4 Pro (#5) Modern developer experience, React Email integration, dead-simple API, rising star.
- GLM-5.3 (#5) Modern DX, React email templates, fast-growing and simple pricing.
- MiniMax M3 (#5) Modern API-first service with great DX for React Email users.
- Mistral Large 4 (#5) Modern developer experience, great docs, built for product emails.
- Nemotron 3 Ultra (#5) Modern developer experience built for React emails
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| 6 |
Brevo |
|
10/10 |
6 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 8 | 6 |
- Claude Haiku 5.5 (#6) Affordable plan with transactional and marketing in one place.
- GPT-6 Luna (#6) Combines transactional email APIs with straightforward management and useful adjacent features.
- Qwen 3.8 Flash (#6) Cheap generous sends plus marketing; good value for mixed needs.
- GLM-5.3 (#6) Good free tier combining email and marketing features.
- Kimi K3 (#6) Affordable for startups, all-in-one marketing + transactional, but deliverability less proven
- MiniMax M3 (#6) Affordable with marketing and transactional features combined.
- Nemotron 3 Ultra (#6) Good free tier and marketing plus transactional features
- Gemini 4 Argon (#7) Affordable all-in-one platform offering solid transactional email alongside SMS and CRM tools.
- DeepSeek V4 Pro (#7) Solid SMTP and API delivery with built-in CRM features; good European data residency.
- Mistral Large 4 (#8) Generous free tier and solid all-in-one marketing + transactional tool.
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| 7 |
SparkPost |
|
10/10 |
8 | 7 | 8 | 9 | 6 | 8 | 8 | 7 | 6 | 7 |
- DeepSeek V4 Pro (#6) Enterprise-grade analytics and inbox placement; strong for high-volume sending.
- Mistral Large 4 (#6) Enterprise-grade deliverability analytics and SLA guarantees.
- GPT-6 Luna (#7) Robust deliverability and analytics for teams sending substantial transactional volume.
- MiniMax M3 (#7) Enterprise-grade deliverability, now part of MessageBird/Bird.
- Nemotron 3 Ultra (#7) Enterprise-grade deliverability and real-time analytics
- Gemini 4 Argon (#8) Enterprise-grade analytics and predictive deliverability intelligence for massive email senders.
- GLM-5.3 (#8) Strong deliverability analytics; PowerMTA heritage.
- Kimi K3 (#8) Strong analytics, good for high-volume senders, but smaller community and documentation gaps
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| 8 |
Mandrill |
|
8/10 |
| | 10 | 7 | 8 | 9 | 7 | 9 | 7 | 8 |
- Qwen 3.8 Flash (#7) Mandrill-backed; fine if already on Mailchimp lists.
- Kimi K3 (#7) Reliable delivery, familiar interface, decent analytics, but pricing jumps quickly
- Mistral Large 4 (#7) Proven deliverability with deep Mailchimp ecosystem integration.
- DeepSeek V4 Pro (#8) Formerly Mandrill; tight integration with Mailchimp marketing if you need both.
- Gemini 4 Argon (#10) Convenient and reliable add-on if your business already relies on Mailchimp for marketing.
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| 9 |
Mailjet |
|
6/10 |
7 | 8 | | | | 7 | 10 | 8 | 9 | |
- Claude Haiku 5.5 (#7) Reliable transactional sending with a usable free tier.
- GLM-5.3 (#7) Easy templating and collaboration; reliable core sending.
- GPT-6 Luna (#8) Accessible API and templates support common transactional email use cases.
- MiniMax M3 (#8) EU-based option with good deliverability and reasonable pricing.
- Kimi K3 (#10) Real-time collaboration features, MJML templating, but slower delivery times in some regions
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| 10 |
MailerSend |
|
4/10 |
| 10 | 6 | | 9 | | | | | 10 |
- Gemini 4 Argon (#6) Great transactional templates, intuitive dashboard, and generous free tier for growing applications.
- DeepSeek V4 Pro (#9) Clean dashboard, template builder, and reliable transactional delivery from the MailerLite team.
- GPT-6 Luna (#10) Simple transactional email APIs and templates work well for app notifications.
- Nemotron 3 Ultra (#10) Intuitive UI and generous free tier for transactional
|
| 11 |
SMTP2GO |
|
3/10 |
| 9 | | | 10 | | 9 | | | |
- GPT-6 Luna (#9) Straightforward SMTP and API sending with helpful delivery monitoring.
- Kimi K3 (#9) Simple setup, reliable infrastructure, good for legacy migrations, but fewer modern features
- DeepSeek V4 Pro (#10) Simple setup, real-time reports, worldwide servers; great for teams avoiding complexity.
|
| 12 |
Elastic Email |
|
3/10 |
| | | | | 10 | | | 10 | 9 |
- Nemotron 3 Ultra (#9) Affordable pricing with solid API and deliverability
- GLM-5.3 (#10) Very low cost with decent API for high-volume sending.
- Mistral Large 4 (#10) Budget-friendly option with decent features for small apps.
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| 13 |
Amazon Pinpoint |
|
1/10 |
| | | 8 | | | | | | |
|
| 14 |
Mailtrap |
|
2/10 |
10 | | 9 | | | | | | | |
|
| 15 |
Postal |
|
1/10 |
9 | | | | | | | | | |
- Claude Haiku 5.5 (#9) Self-hosted option for teams wanting full control over mail infrastructure.
|