The Mailtrap Insider’s Guide
Everything we know about Mailtrap in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Mailtrap
The Insider’s Guide
Email API and SMTP for sending, with a sandbox for testing emails
Every plan, grade, refund rule and rival among email sending services, read from Mailtrap’s own pages.
Made by Railsware · checked Oct 18, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Mailtrap’s own pages, its app-store listings and our grades. Every fact in it is on Mailtrap’s page too, where it is kept up to date. Checked Oct 18, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.6
GPA, above 6 of the 11 other email sending services we grade
Mailtrap, from Railsware, sends transactional and bulk email through an API or SMTP, and is also known for its Email Sandbox, which catches test emails from development and staging so they never reach real people. It adds inbound email for apps and AI agents, a separate bulk stream and analytics by mailbox provider. Sending plans are priced by emails a month, with 4,000 a month free.
To get you started, here are 9 things to know about Mailtrap, taken from its own pages and our grades.
- 1
Best for testing and sending email from one provider
Mailtrap is best known for its sandbox, which catches test emails from development so they never reach real people, and it sends real email too, by API or SMTP.
- 2
Paid plans start at $15 a month
As its pricing page puts it: $15 per month for 10,000 emails.
- 3
There is a free plan
4,000 emails a month, limited to 150 a day, 1 user, 1 sending domain and 3 days of email logs, through the API or SMTP.
- 4
It runs on Web
Web.
- 5
Email API and SMTP
Send through a REST API with SDKs for Python, PHP, Ruby, Node.js and Java, or through SMTP, with hosted templates and webhooks for opens, clicks and bounces.
- 6
Bulk stream
Bulk and marketing email goes out on a separate stream, by API or SMTP, so it does not affect the reputation of transactional sending.
- 7
Email Sandbox
A fake SMTP server catches emails from dev, QA and staging, with HTML and spam checks, sold as separate plans from free for 50 test emails a month.
- 8
A 2.6 GPA, above 6 of 11
That is against the other email sending services we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace Mailtrap you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one.
Mailtrap at a glance
- Pricing
- Free plan, from $15 per month for 10,000 emails
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- Railsware
- Category
- Email Sending Services
- Our grade
- 2.6 GPA, good
The report card
Best for testing and sending email from one provider
Mailtrap is best known for its sandbox, which catches test emails from development so they never reach real people, and it sends real email too, by API or SMTP. 50,000 emails is $20 a month on Basic, among the cheapest at that volume. The sandbox and marketing are priced separately, and dedicated IPs wait for the $85 Business plan.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | B | Graded on 50,000 emails a month: Basic is $20 at that volume, in the cheaper quarter of this category, with 3 users and 5 domains. There's no yearly discount on sending, and dedicated IPs, SSO and live chat need Business at $85. |
| Free plan and trial | C | Free for good: 4,000 emails a month, but only 150 a day, with 1 user, 1 domain and 3 days of logs, and no extra emails allowed. Handy for a side project, tight for a live app. |
| Features | B | API and SMTP with SDKs, templates, webhooks, a separate bulk stream, inbound email, analytics by mailbox provider and a sandbox for test emails. It covers the whole job, though the sandbox is a separate plan and no address validation is on record. |
| Ease of use | C | Judged on how fast a developer sends a first email: SDKs for five languages and SMTP, once a domain is verified, and the sandbox lets you test without emailing anyone. No rating on record. |
| Platforms and integrations | B | Web, with an API, SMTP and SDKs, plus Supabase, Vercel, Claude, Cursor, Windsurf and Antigravity. No desktop or phone app, so B is the top. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Mailtrap is for
- Great if you want to test emails in staging and send them for real from one place
- Handy when you're moving from SendGrid, Mailgun or Amazon SES
- Good for side projects sending up to 4,000 emails a month for nothing
Who it is not for
- Pricey if you need a dedicated IP, which starts with Business at $85 a month
- Tight if you send far past your plan, as overages are capped and you're told to upgrade
- Not for you if you want newsletters included, since Email Marketing is priced separately
Good to know
Good for
- Developers who want testing and sending from one provider
- Small teams sending up to 4,000 emails a month for free
- Companies moving from SendGrid, Mailgun or Amazon SES
Worth knowing
- Basic has no dedicated IP and keeps 5 days of logs; dedicated IPs, SSO and live chat support start with Business at $85 a month.
- The free plan caps sending at 150 emails a day and allows no overage.
- Email Sandbox for testing and Email Marketing for campaigns are priced separately; marketing starts at $15 a month for 10,000 contacts.
- Overages are capped, so senders far above their plan's volume are told to upgrade.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$15
A month to start. There is a free plan too
Mailtrap has a free plan. Paid plans start at $15 per month for 10,000 emails.
Handy for a side project, tight for a live app.
Free
$0
4,000 emails a month and 150 a day, 1 user, 1 domain, 3 days of logs, no extra emails.
Basic
$15
per month for 10,000 emails
3 users, 5 domains, 5 days of logs, email support on weekdays. Extra emails $1 per 1,000. $20 a month at 50,000 emails and $30 at 100,000.
Business
$85
per month for 100,000 emails
100 users, 100 domains, 15 days of logs, dedicated IP with warm-up, SSO, subaccounts, 24/7 chat. Extra emails $0.88 per 1,000.
Enterprise
$750
per month for 1,500,000 emails
Unlimited users and domains, 30 days of logs, priority support. Extra emails $0.55 per 1,000; $1,250 at 2.5 million, custom above.
The free plan
4,000 emails a month, limited to 150 a day, 1 user, 1 sending domain and 3 days of email logs, through the API or SMTP.
Read from mailtrap.io on Oct 18, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Email API and SMTP for sending, with a sandbox for testing emails. Here is what it does, as its own site describes it, and what it covers: public API, email campaigns, transactional email.
It covers the whole job, though the sandbox is a separate plan and no address validation is on record.
- Email API and SMTP
- Send through a REST API with SDKs for Python, PHP, Ruby, Node.js and Java, or through SMTP, with hosted templates and webhooks for opens, clicks and bounces.
- Bulk stream
- Bulk and marketing email goes out on a separate stream, by API or SMTP, so it does not affect the reputation of transactional sending.
- Email Sandbox
- A fake SMTP server catches emails from dev, QA and staging, with HTML and spam checks, sold as separate plans from free for 50 test emails a month.
- Inbound email
- Dedicated inbound addresses, real-time webhooks and API access let your app or AI agents receive email.
- Deliverability analytics
- Stats for each mailbox provider, bounce categories and feedback-loop complaint data, with reputation alerts and dedicated IPs from Business.
- Security and accounts
- Two-factor sign-in and API key permissions on every plan, IP allowlisting from Basic, and SSO and subaccounts from Business.
Where it runs
- Web
What it works with
- Supabase
- Vercel
- Claude
- Cursor
- Windsurf
- Antigravity
Mailtrap is made by Railsware.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
6/11
Other email sending services it is graded above
Mailtrap's GPA of 2.6 is higher than 6 of the 11 other email sending services we grade, and level with 4.
It stands best on value for money (B, above 6 of 11) and worst on ease of use (C, above 0).
Its paid plans start at $15 a month, against a middle price of $15 for the category: 2 of the 10 others that charge start lower.
On features, ease of use and platforms it scores 2.7 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 12 email sending services we grade, cut by the letter each got. Mailtrap’s own letter is outlined.
- BValue for moneyAbove 6 of 11
- CFree plan and trialAbove 1 of 11
- BFeaturesAbove 2 of 11
- CEase of useAbove 0 of 11
- BPlatforms and integrationsAbove 0 of 11
Price against what you get
Each dot is one of 11 email sending services. Further left costs less; higher up scores better on features, ease of use and platforms. Mailtrap is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace Mailtrap you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one.
It costs $180 a year.
What you could not
- Mail servers with a good name among inbox providers.
- Newsletters sent to thousands of people that still reach the inbox.
- It plugs into other products, Supabase, Vercel and Claude among them, and has an API.
- What a company asks for before it lets staff use something: single sign-on and roles and permissions.
- The depth: we grade its features B, which means it covers the whole job.
What this rests on. Mailtrap’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Twilio SendGrid, Mailgun, Postmark, Resend and MailerSend
The 5 tools Mailtrap is most often weighed against, with where each one differs from it.
- 2.6GPA
Twilio SendGrid
Free trial · from $19.95/mo
Twilio's email API and SMTP service, priced by monthly email volume.
- Mailtrap has a free plan. Twilio SendGrid does not, though it has a free trial.
- Mailtrap also covers email campaigns.
- Twilio SendGrid also covers email verification.
- 2.4GPA
Mailgun
Free plan · from $15/mo
Email API and SMTP relay for developers, with list validation.
- Mailtrap also covers email campaigns.
- Mailgun also covers email verification.
- 2.2GPA
Postmark
Free plan · from $15/mo
Transactional email API and SMTP, with broadcasts on a separate stream.
- Mailtrap also covers email campaigns.
- Postmark also covers dMARC.
- 2.6GPA
Resend
Free plan · from $20/mo
- 2.4GPA
MailerSend
Free plan · from $6.30/mo
Transactional email and SMS API from the team behind MailerLite.
- Mailtrap also covers email campaigns.
- MailerSend also covers business texting, whatsApp messaging, email verification and dMARC.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Mailtrap free?
Mailtrap has a free plan. 4,000 emails a month, limited to 150 a day, 1 user, 1 sending domain and 3 days of email logs, through the API or SMTP.
How much does Mailtrap cost?
Mailtrap lists 4 plans. Free: $0.
What platforms does Mailtrap work on?
Mailtrap is available on Web.
Does Mailtrap have an Android app?
No Android app was listed when its pages were read on Oct 18, 2026. Mailtrap is listed for Web.
Does Mailtrap have an iPhone app?
No iPhone app was listed when its pages were read on Oct 18, 2026. Mailtrap is listed for Web.
Is Mailtrap open source?
Mailtrap is not described as open source on its own site, as read on Oct 18, 2026.
Does Mailtrap have an API?
Yes. Mailtrap offers a public API, according to its own site.
What does Mailtrap integrate with?
Mailtrap's listing names Supabase, Vercel, Claude, Cursor, Windsurf and Antigravity.
Who makes Mailtrap?
Mailtrap is made by Railsware.
What are the alternatives to Mailtrap?
The closest alternatives to Mailtrap in our directory are Twilio SendGrid, Mailgun, Postmark, Resend and MailerSend.
How does Mailtrap compare with other email sending services?
Mailtrap's GPA of 2.6 is higher than 6 of the 11 other email sending services we grade, and level with 4.
Is Mailtrap good value for money?
ToolGPA grades Mailtrap B for value for money. Its paid plans start at $15 a month, against a middle price of $15 for the category: 2 of the 10 others that charge start lower.
Could I make my own version of Mailtrap?
To replace Mailtrap you would be making mail servers with a good name among inbox providers.
Where this guide comes from
The prices, plans, platforms and features were read from Mailtrap’s own pages on Oct 18, 2026, and the grades were given on Oct 18, 2026. Graded from this listing, whose facts were read from Mailtrap's own pages on 18 October 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Railsware. Prices change, so check mailtrap.io before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
2,281
Tools graded, in 73 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
ToolGPA is free to read. It may earn a commission from affiliate links and it works with sponsors, but anything paid for is labelled and no one can pay for a grade. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
2,281
tools graded
73
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Mailtrap, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/mailtrap
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Mailtrap: The Insider's Guide", checked Oct 18, 2026. https://toolgpa.com/tools/mailtrap
Know someone choosing between email sending services?
Send them this guide: toolgpa.com/tools/mailtrap/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded email sending services after Mailtrap, each with an Insider's Guide of its own.
- Email Sending Services Insider's GuideEvery one of the 12 email sending services we grade, compared
- Amazon SES Insider's GuideAWS email sending and receiving, paid per 1,000 emails2.8 GPA
- Bird Email Insider's GuideSparkPost's successor: Bird's email API, paid from a prepaid balance2.6 GPA
- Elastic Email Insider's GuideLow-cost email API and SMTP relay priced by monthly email volume2.6 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Mailtrap’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. ToolGPA uses affiliate links and may earn a commission from them, and it works with sponsors; anything paid for is labelled, and no one can pay for a grade. Mailtrap is a trademark of its owner, and this guide is not made, paid for or approved by Railsware. Prices and plans change: check mailtrap.io before you buy.