Reliable SMTP2GO alternative that’s easy to scale
Meet MailerSend, the SMTP2GO alternative you can easily scale as your business grows without compromising on deliverability and reliability.
Flexible plans & pricing
Professional
For agencies and white-label resellers sending at scale
Starter
For growing startups and small businesses
Hobby
For personal projects and side hustles
Free
For occasional email testing and sending
- 500 emails /month
- 10 email verification credits
- Email threads support
- Drag & Drop email builder
Deliverability that holds up at scale
MailerSend doesn’t just get your emails sent; it gets them delivered. Our precision-engineered infrastructure, built-in authentication, and continuous reputation monitoring keep placement high as your volume scales.
Reliability you can build on
Your password resets and order confirmations are only as reliable as the platform behind them. MailerSend is built for consistent sending, with a 100% uptime track record, 99.5% uptime SLA, and always-transparent system status.
Easy integration with a powerful API
curl -X POST \
https://api.mailersend.com/v1/email \
-H 'Content-Type: application/json' \
-H 'X-Requested-With: XMLHttpRequest' \
-H 'Authorization: Bearer {place your token here without brackets}' \
-d '{
"from": {
"email": "your@email.com"
},
"to": [
{
"email": "your@client.com"
}
],
"subject": "Hello from MailerSend!",
"text": "Greetings from the team, you got this message through MailerSend.",
"html": "Greetings from the team, you got this message through MailerSend.
"
}'
use MailerSend\MailerSend;
use MailerSend\Helpers\Builder\Recipient;
use MailerSend\Helpers\Builder\EmailParams;
$mailersend = new MailerSend(['api_key' => 'key']);
$recipients = [
new Recipient('your@client.com', 'Your Client'),
];
$emailParams = (new EmailParams())
->setFrom('your@email.com')
->setFromName('Your Name')
->setRecipients($recipients)
->setSubject('Subject')
->setHtml('Greetings from the team, you got this message through MailerSend.
')
->setText('Greetings from the team, you got this message through MailerSend.');
$mailersend->email->send($emailParams);
php artisan make:mail ExampleEmail
Mail::to('you@client.com')->send(new ExampleEmail());
const Recipient = require("mailersend").Recipient;
const EmailParams = require("mailersend").EmailParams;
const MailerSend = require("mailersend");
const mailersend = new MailerSend({
api_key: "key",
});
const recipients = [new Recipient("your@client.com", "Your Client")];
const emailParams = new EmailParams()
.setFrom("your@email.com")
.setFromName("Your Name")
.setRecipients(recipients)
.setSubject("Subject")
.setHtml("Greetings from the team, you got this message through MailerSend.
")
.setText("Greetings from the team, you got this message through MailerSend.");
mailersend.send(emailParams);
package main
import (
"context"
"fmt"
"time"
"github.com/mailersend/mailersend-go"
)
var APIKey string = "Api Key Here"
func main() {
ms := mailersend.NewMailersend(APIKey)
ctx := context.Background()
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
subject := "Subject"
text := "Greetings from the team, you got this message through MailerSend."
html := "Greetings from the team, you got this message through MailerSend.
"
from := mailersend.From{
Name: "Your Name",
Email: "your@email.com",
}
recipients := []mailersend.Recipient{
{
Name: "Your Client",
Email: "your@client.com",
},
}
variables := []mailersend.Variables{
{
Email: "your@client.com",
Substitutions: []mailersend.Substitution{
{
Var: "foo",
Value: "bar",
},
},
},
}
tags := []string{"foo", "bar"}
message := ms.NewMessage()
message.SetFrom(from)
message.SetRecipients(recipients)
message.SetSubject(subject)
message.SetHTML(html)
message.SetText(text)
message.SetSubstitutions(variables)
message.SetTags(tags)
res, _ := ms.Send(ctx, message)
fmt.Printf(res.Header.Get("X-Message-Id"))
}
from mailersend import MailerSendClient, EmailBuilder
ms = MailerSendClient()
email = (EmailBuilder()
.from_email("sender@domain.com", "Your Name")
.to_many([{"email": "recipient@domain.com", "name": "Recipient"}])
.subject("Hello from MailerSend!")
.html("Hello World!
")
.text("Hello World!")
.build())
response = ms.emails.send(email)
require "mailersend-ruby"
# Intialize the email class
ms_email = Mailersend::Email.new
# Add parameters
ms_email.add_recipients("email" => "your@client.com", "name" => "Your Client")
ms_email.add_recipients("email" => "your@client.com", "name" => "Your Client")
ms_email.add_from("email" => "your@domain.com", "name" => "Your Name")
ms_email.add_subject("Hello!")
ms_email.add_text("Greetings from the team, you got this message through MailerSend.")
ms_email.add_html("Greetings from the team, you got this message through MailerSend.")
# Send the email
ms_email.send
Build workflows around every event
Use Webhooks for 22 types of events, including delivered, bounced, deferred, and spam complaints, to push data straight to your endpoints in real time.
Advanced inbound email routing
Enable 2-way conversations with customers and add advanced functionality to your app or website with inbound routing. MailerSend receives emails on your behalf and forwards the content into your application.
More integrations for a seamless setup
45+ ready-made transactional email templates
Get a head start with our growing gallery of professionally designed, responsive email templates. Easily customize the design and content of your chosen templates in the drag & drop editor.
Built-in email split testing
No extra tooling needed:use a/b testing to test up to 5 variants of the same template and learn which content, subject lines and CTAs perform the best to improve results.
Deliverability tools out of the box
-
Learn more
DMARC monitoring
Start receiving reports about your domains’ sending activity in your MailerSend account to quickly identify authentication issues and unauthorized sending sources. -
Learn more
Blocklist monitoring
Add your sending domains and IPs with a click to run automated checks against the most impactful email blocklists. Get notified about listings with tips on how to get removed. -
Learn more
Email verification
Identify invalid email addresses in your recipient list and add them to your suppressions to reduce bounces, improve deliverability, and maintain a healthy sender reputation.
Award-winning customer support
Our friendly, knowledgeable support team is available 24/7 via email and live chat to help you with getting started, advanced features, troubleshooting, and technical issues.
In-depth analytics and activity tracking
Gain valuable insights into account performance and monitor key metrics via custom reports and in real-time. Plus, use webhooks and events to integrate data into your other apps.
Go beyond email with multichannel messaging
Reach more recipients across the entire customer lifecycle with high-volume, toll-free SMS (USA & Canada) and global WhatsApp business messaging (coming soon).
One account, multiple platforms
Use SSO to connect MailerSend and MailerLite and manage marketing and transactional emails under one account. Keep all sending activity separate and benefit from better deliverability, reporting and compliance.
Manage transactional emails with your AI tool
Connect Claude, VSCode, Cursor, ChatGPT or Gemini to your MailerSend account with our hosted email MCP. Manage domains, send emails, create API tokens, and more.
How MailerSend prices compare to SMTP2GO
|
|
|
|---|
|
|
|
|
|---|---|---|
| 5,000 emails/month | $7 | |
| 10,000 emails/month | $14.50 | $15 |
| 50,000 | $35 | $30 |
| 100,000 | $68 | $75 |
| 250,000 | $162.50 | $170 |
| 500,000 | $325 | $280 |
How MailerSend features compare to SMTP2GO
|
|
|
|---|
|
|
|
|
|---|---|---|
| API daily requests limit | 100,000 | No fixed limit |
| SMS API | ||
| Email Marketing SSO | ||
| Inbound routing | ||
| Bulk email | ||
| Suppression list management | ||
| Hosted MCP | Third-party | |
| Email split testing | ||
| Email activity export | ||
| Drag & drop template builder | ||
| Rich text template editor | ||
| HTML template editor | ||
| Dedicated IP address | Available for high-volume senders | Available for high-volume senders |
| Deliverability consultation | For Professional and Enterprise | |
| IP allowlist | ||
| DMARC reporting | ||
| Blocklist monitoring | ||
| iOS app | ||
| Email verification | ||
| Slack integration | ||
| 24/7 email support | ||
| Live chat support | Available for Starter, Professional and Enterprise | |
| Multiple users | ||
| User roles | 4 roles and custom user | 3 roles |
| Multiple domains |
Frequently Asked Questions
What are the limitations of SMTP2GO?
Although SMTP2GO has no fixed API limit, restrictions may be placed on an ad-hoc basis if SMTP2GO decides that too many requests are being sent or there is an excessive amount of errors. You can find information about MailerSend’s rate limits in our documentation.
Does MailerSend offer a free plan for testing and small projects?
Yes, you can sign up to MailerSend for free and send your first email in minutes with a trial plan and domain. You can then subscribe to the Free plan to get 500 emails/month or upgrade for as little as $7 for more volume and features.
Is there a limit on the number of domains I can add to my account?
Hobby plans can add up to 1 domain, Starter plans have 10 domains included and can purchase additional domains for $4 per domain/month. Professional plans have unlimited domains included.
How do I send an email with MailerSend?
The first step is to create an account and then verify a domain. You’ll then need to plug in your domain’s SMTP credentials, or generate an API token to start sending emails. Read our guide to find more information on how to start sending emails with MailerSend.
Can my non-technical team members edit email templates without touching code?
Yes, our drag & drop and rich text builders are designed for no-code template building.
Does MailerSend support transactional SMS alongside email?
Yes, transactional SMS is currently available for businesses in the USA and Canada.