Amazon SES vs Plunk
Amazon SES and Plunk are both popular choices in the transactional email service space. Amazon SES has been around since 2011, giving it a 12-year head start over Plunk (founded 2023). Amazon SES is priced by usage, while Plunk starts at $1/1,000 emails. Their pricing is not measured the same way, so we don't rank them on price. Plunk offers a free plan (1,000 emails/month), while Amazon SES does not. Plunk has the edge with marketing automation, audience segmentation.
Quick Verdict
Amazon SES wins on rating, integrations.
Plunk wins on deliverability, free tier.
It's a close call — your choice depends on your specific needs.
Amazon SES
Cheapest email at scale on AWS infrastructure
Amazon SES is AWS's cloud-based email sending service that processes over a trillion emails annually for customers like Netflix and Duolingo. At just $0.10 per 1,000 emails with no minimum commitments, it is the most cost-effective option for developers and businesses already in the AWS ecosystem who need raw transactional email infrastructure at massive scale.
Plunk
The open-source email platform
Plunk is an open-source email platform that combines transactional emails, workflow automation, and campaign broadcasts in one tool. Built for developers, it offers a simple API, self-hosting capabilities, and transparent pay-per-email pricing.
Feature Comparison
| Feature | Amazon SES | Plunk |
|---|---|---|
| Rating | 4.4/5 | 3.8/5 |
| Starting Price | Usage-based | $1/1,000 emails |
| Free Plan | No free plan | 1,000 emails/month |
| Founded | 2011 | 2023 |
| Email Templates | 0 | 10 |
| Integrations | 50 | 10 |
| Deliverability Rate | 95% | 96% |
| Marketing Automation | No | Yes |
| A/B Testing | No | No |
| Landing Pages | No | No |
| Segmentation | No | Yes |
| Drag & Drop Editor | No | No |
| SMS Marketing | No | No |
| Ecommerce Features | No | No |
| API Access | Yes | Yes |
| Multi-Language | No | No |
| Web Push Notifications | No | No |
| Live Chat | No | No |
| Advanced Analytics | Yes | Yes |
Amazon SES: Pros & Cons
Pros
- + Extremely low cost at $0.10 per 1,000 emails, making it the cheapest option for high-volume sending
- + Native integration with AWS ecosystem including Lambda, SNS, CloudWatch, and IAM
- + Handles over a trillion emails per year with enterprise-grade reliability and uptime
- + Built-in support for SPF, DKIM, and DMARC email authentication out of the box
- + Flexible IP options including shared, dedicated ($24.95/mo), and managed dedicated IPs
Cons
- − Steep learning curve requiring AWS expertise for domain verification, DKIM, SPF, and IAM setup
- − No visual drag-and-drop email editor or built-in template builder included
- − Limited customer support; no phone support and documentation can be hard to navigate
- − Strict sending limits initially; requires a production access request to leave the sandbox
- − Advanced analytics like click tracking require additional services like Amazon Pinpoint at extra cost
Plunk: Pros & Cons
Pros
- + Open-source under AGPL-3.0 with self-hosting option
- + Transparent pricing at $0.001 per email with no contact limits
- + Combines transactional, workflow, and campaign emails in one platform
- + Developer-friendly with REST API, Node.js and Python SDKs
- + Open-source codebase allows self-hosting for full data control
Cons
- − Relatively new platform with smaller user base
- − Limited template library and no visual editor
- − No A/B testing, landing pages, or SMS
- − Community support via Discord rather than dedicated team
- − Early-stage product — feature set is still catching up to competitors
The Verdict
Amazon SES edges ahead with a 4.4/5 rating compared to Plunk's 3.8/5. The gap comes mainly from deliverability (4.6 vs 3.5) and support (4.4 vs 3.4). On deliverability, Plunk reports 96% compared to 95% for Amazon SES — a meaningful difference if inbox placement is critical for your campaigns.
| Criterion | Weight | Amazon SES | Plunk |
|---|---|---|---|
| Starting Price | 30% | Usage-based | $1/1,000 emails |
| Deliverability | 25% | 95% | 96% Winner |
| Rating | 25% | 4.4/5 Winner | 3.8/5 |
| Integrations | 10% | 50 Winner | 10 |
| Free Tier | 10% | No | Yes Winner |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose Amazon SES if…
- + You're a aws native developers
- + You're a high volume transactional senders
- + Extremely low cost at $0.10 per 1,000 emails, making it the cheapest option for high-volume sending
Choose Plunk if…
- + You need a free plan to get started
- + You need marketing automation
- + You're a developers
- + You're a startups