Why marketing email platforms are not built for cold outreach.
The Amazon SES vs Mailchimp comparison for cold email comes up frequently, but these are fundamentally different types of tools built for different use cases. Understanding the SES vs Mailchimp distinction before you commit to either saves you from running into compliance issues, deliverability problems, or unexpected costs down the road. One is raw sending infrastructure. The other is a marketing email platform. That difference matters enormously for cold outreach.
Amazon SES (Simple Email Service) is a cloud based email sending service from AWS. It provides the infrastructure to send email at scale but does not include campaign management, sequence builders, or any outreach workflow tools. Mailchimp is a marketing platform designed for newsletters, promotional emails, and automated marketing sequences sent to subscribers who have opted in to receive them.
This is the most important difference for anyone considering Mailchimp for cold email. Mailchimp's terms of service explicitly prohibit sending unsolicited email to people who have not opted in to your mailing list. Cold email, by definition, goes to people who have not subscribed. Using Mailchimp for cold outreach violates their terms and can result in immediate account suspension. This is not a gray area. Mailchimp actively monitors for cold email patterns and will shut down accounts that send it.
Amazon SES does not prohibit cold email outright, but they do require you to maintain low bounce rates (below 5 percent) and low complaint rates (below 0.1 percent). As long as you follow their guidelines, verify your lists, and send to legitimate business recipients, AWS SES for cold email is a viable and cost effective option.
| Factor | Amazon SES | Mailchimp |
|---|---|---|
| Cold email allowed | Yes, with compliance requirements | No, prohibited by terms of service |
| Pricing | $0.10 per 1,000 emails | Monthly plans based on contacts and features |
| Infrastructure type | Dedicated to your AWS account | Shared across Mailchimp users |
| Campaign management | No, sending infrastructure only | Yes, full campaign builder |
| Reputation control | Your own domain and account reputation | Shared reputation across platform |
| Setup complexity | Technical (DNS, SMTP, IAM) | Simple (web interface, drag and drop) |
Use Amazon SES when you need to send cold B2B outreach and want the lowest possible per email cost with infrastructure you control. SES requires a separate campaign management tool to handle sequences, follow ups, and reply tracking, but the sending cost of $0.10 per 1,000 emails is hard to beat at scale. You are responsible for your own authentication, warmup, and list quality, but in return you get dedicated infrastructure where your reputation depends only on your own behavior.
Use Mailchimp when you are sending marketing emails to subscribers who have opted in. Newsletters, product updates, promotional campaigns, and automated welcome sequences are exactly what Mailchimp is designed for. It handles campaign creation, list management, and analytics in one platform. But do not use it for cold email. The account suspension risk is real and the compliance conflict is clear.
EmailQo provides the campaign management layer that Amazon SES lacks. You connect your SES account to EmailQo, and the platform handles sequences, follow ups, sender rotation, and reply detection while SES handles the actual sending. AWS bills you directly at $0.10 per 1,000 emails with no markup from EmailQo. Built in warmup and pre send inbox health checks are included on every plan, covering the deliverability management that SES alone does not provide.