Build it or buy it
Amazon SES and Mailtrap both take an email from your app and deliver it. The difference is everything around that step. SES hands you the delivery primitive and a set of AWS hooks. Mailtrap hands you delivery plus a dashboard, logs and, as a separate product, an inbox for testing. Which one is right depends mostly on whether you want to build and run the tooling yourself.
More detail on each is in our Amazon SES comparison and Mailtrap comparison.
The money at three volumes
| Monthly emails | Amazon SES | Mailtrap Email API |
|---|---|---|
| 10,000 | About $1 | $15 (Basic) |
| 100,000 | About $10 | $30 (Basic) or $85 (Business with dedicated IP) |
| 1,500,000 | About $150 | From $750 (Enterprise) |
SES figures are sending fees only. Add $0.12 per GB for attachments and data transfer, $24.95 a month per standard dedicated IP, and whatever you spend on CloudWatch, storage or a log pipeline. Mailtrap's figures include logs, analytics and support at the plan's level.
The gap is real at scale. At 1.5 million emails a month you are looking at hundreds of dollars on SES against at least $750 on Mailtrap. At 10,000 a month, the difference is less than an hour of engineering time.
Pricing reality with a dedicated IP
Headline rates hide the extras, so here is a worked example at 100,000 emails a month where you want your own IP.
| Line item | Amazon SES | Mailtrap Email API |
|---|---|---|
| Sending 100,000 emails | About $10 | Included in plan |
| Data transfer (100,000 emails at roughly 20 KB each, about 2 GB) | About $0.24 | Included |
| Dedicated IP | $24.95 standard | Requires Business, $85/mo for 100,000 emails |
| Logs you can search | Your own storage and tooling | 15 days on Business |
| Approximate total | About $35 plus log tooling | $85 |
Without a dedicated IP, Mailtrap Basic at $30 is the comparison and SES is about $10. Either way SES is cheaper on the invoice. What you are really deciding is whether $50 to $75 a month is more or less than the engineering time to build and run log storage, dashboards and alerting on AWS.
What "build it yourself" means on SES
SES gives you sending, domain verification with Easy DKIM, an account-level suppression list, configuration sets and event publishing. Getting a working email operation takes a few more pieces:
- Production access. New accounts start in the SES sandbox, limited to 200 emails a day to verified addresses. You request production access and explain how you handle bounces and complaints.
- Event pipeline. Publish bounce, complaint, delivery, open and click events from a configuration set to SNS, Kinesis Data Firehose, CloudWatch or EventBridge, then store them somewhere you can query.
- Logs and search. SES does not keep a searchable message log. If support needs to answer "did this customer get the reset email," you build that lookup.
- Deliverability monitoring. CloudWatch metrics plus the optional Virtual Deliverability Manager add-on.
None of this is hard for an AWS-comfortable team, and it lets you keep data where you want. It is a project, though, not a setting.
What Mailtrap packages instead
Mailtrap's Email API covers sending with a dashboard that shows each message, its events and delivery stats, with logs kept 3 days on Free up to 30 days on Enterprise. It separates transactional and bulk streams, offers official SDKs, and gives you a dedicated IP on Business.
Its best-known product is separate: Email Sandbox. You point staging, preview apps or CI at a Sandbox SMTP inbox, and every email your app sends is captured instead of delivered. You can inspect HTML, check spam scores and headers, and share inboxes with QA. SES has nothing similar; its mailbox simulator addresses let you test bounce and complaint handling, not see what your template looked like.
Mailtrap also sells an Email Marketing product with contacts and campaigns. It is priced separately from the Email API and Sandbox, so check which of the three you actually need before comparing costs.
Account health rules
Both providers protect shared infrastructure, but SES is unusually explicit about it, and that matters for how you operate.
New SES accounts start in the sandbox and must request production access, explaining how they collect addresses and handle bounces and complaints. After that, AWS tracks your reputation continuously. An account goes under review when bounces exceed 5% or complaints exceed 0.1%, and sending can be paused at 10% bounces or 0.5% complaints. Because these are account-wide, one bad import from a marketing experiment can pause your password resets too. Teams that run SES seriously set CloudWatch alarms below those thresholds and keep marketing traffic in a separate configuration set or account.
Mailtrap runs a compliance check on new sending domains and monitors accounts under its own sending policy. You see bounces, spam complaints and suppressions in its dashboard rather than configuring your own alarms, which is less control but less to build.
Who is behind each tool
SES is an AWS service. It is priced, supported and secured like the rest of AWS: IAM for access, your AWS Support plan for help, and your AWS bill for payment. For companies with AWS procurement and security reviews already done, that is a real advantage.
Mailtrap is built by Railsware, a software company that started it as an internal testing tool before turning it into a product. That history shows: the testing Sandbox is its most distinctive product, and the sending, analytics and marketing products grew around it.
The common hybrid
Many teams do not choose. They use Mailtrap Email Sandbox in development, staging and CI, and SES in production. That gets you safe testing and the cheapest delivery, at the cost of two vendors and two sets of credentials. If you go this way, make sure staging credentials can never point at production SES, and test SES bounce handling with the mailbox simulator before launch.
Migration checklist
Moving production sending between the two is mostly plumbing.
| Step | SES to Mailtrap | Mailtrap to SES |
|---|---|---|
| Account readiness | Create the Mailtrap account and pass the domain compliance check | Request SES production access before cutover, not after |
| DNS | Add Mailtrap's DKIM and return-path records beside the SES records | Enable Easy DKIM and a custom MAIL FROM domain |
| Credentials | Swap SMTP host and credentials or API client per environment | Create IAM-scoped SMTP credentials or SDK access |
| Suppressions | Export the SES list with ListSuppressedDestinations and import it | Export Mailtrap suppressions and add them to the SES account-level list |
| Events | Replace SNS or EventBridge consumers with Mailtrap webhooks | Publish events from a configuration set and build the consumers |
| Logs | Nothing to build | Decide where message events are stored and searched |
| Warm-up | Ramp a new dedicated IP over a few weeks | Same, or start on the shared pool |
Decision checklist
- Is anyone on the team already fluent in AWS? If yes, SES's setup cost is low and its price advantage compounds. If no, the first bounce storm will cost more than a year of Mailtrap.
- Does support need to look up individual emails? Mailtrap's log search answers that on day one. On SES it is something you build.
- Is broken staging email your actual problem? Then the purchase is Mailtrap Email Sandbox, and the production sender is a separate decision.
- Are you above a million emails a month? SES's per-email price starts to matter more than dashboard convenience.
- Do you need to receive email? SES has inbound receipt rules. Mailtrap's Email API does not process inbound mail.
Use-case matchups
| Need | Better fit | Why |
|---|---|---|
| 5 million receipts a month from an AWS-hosted app | Amazon SES | Per-email price and AWS-native operations |
| Two developers who need logs for support on day one | Mailtrap | Searchable logs and analytics without building them |
| Catching staging and CI email before it reaches users | Mailtrap Email Sandbox | Captures and inspects test email |
| Processing inbound replies with Lambda | Amazon SES | Receipt rules with S3, SNS and Lambda actions |
| Sending before an approval step completes | Mailtrap | No SES-style sandbox to exit |
| Onboarding and billing emails a marketer can edit | Sequenzy | Lifecycle automation and campaigns on top of sending |
Where Sequenzy fits
Sequenzy is not a cheaper SES or a replacement for Mailtrap Sandbox. It sits a layer up. If your SES or Mailtrap setup is surrounded by homegrown code that decides when to send onboarding, trial-ending or failed-payment emails, Sequenzy moves that logic into a visual automation builder triggered by app events and Stripe, and sends transactional email from the same account. Marketers can edit the copy without a deploy.
At 100,000 emails a month Sequenzy costs more than SES alone, because you are paying for campaigns, automation and analytics rather than delivery only. Keep Mailtrap Sandbox for staging if you use it; Sequenzy does not replace it.
