About MailerSend
Overview
MailerSend is a team-friendly transactional email API for modern apps, offering email, WhatsApp, and SMS that you can set up in minutes and deliver in seconds. Built by the team behind MailerLite, it is a United States-registered company that uses MailerSend for its own transactional email across all its products.
Developers send through a clean REST API or a standard SMTP relay, with official SDKs for cURL, Node.js, PHP, Laravel, Python, Ruby, Go, and Java. The service guarantees 99.5% uptime and is GDPR compliant, running on EU data centers with ISO 27001 certification.
Key Benefits
- Fast API integration with SDK libraries for eight programming languages plus a drop-in SMTP relay.
- Real-time email activity tracking that follows every step of the message journey with mail server responses.
- Automatic suppression management for bounces, unsubscribes, and spam complaints.
- Webhooks for key email and SMS events to trigger workflows and monitor delivery.
- Drag & Drop and HTML template builders with split testing to create and optimize emails.
- Team-friendly controls with RBAC, 2FA, and SSO for managing access.
How It Works
You sign up for a free account, add and verify your sending domain, then send messages through the API or SMTP credentials using your preferred language SDK. MailerSend handles delivery, tracks activity in real time, and you can create reports filtered by domain and tags while webhooks notify your app of send events.
Use Cases
- E-commerce teams send order confirmations, shipping notifications, and delivery updates at scale.
- SaaS operations deliver onboarding emails, billing notices, password resets, and OTPs.
- Agencies onboard multiple clients via domain or sender identity and manage their transactional email in a single account.
- Companies reach customers with global WhatsApp transactional messaging where they chat.
- Developers verify recipient addresses in bulk or real time to keep databases clean.
Why Choose This Product
MailerSend pairs 24/7 technical support with a 14-day free Professional trial and a permanent free tier of 500 emails per month. Its MCP server lets AI agents such as Claude, Cursor, and ChatGPT integrate, test, and troubleshoot sending directly.
MailerSend Pros & Cons
- Free tier with 500 emails/month
- SDK libraries for 8 programming languages
- WhatsApp Business API and toll-free SMS channels
- Real-time activity tracking and webhooks
- 99.5% guaranteed uptime with 24/7 support
- SMS and WhatsApp available in the USA and Canada only
- Billing invoices charged in USD only; EUR and GBP prices are informational
- Dedicated IPs only for Enterprise accounts sending over 100K emails/week
Key Features
Email API
Send transactional emails through a REST API with official SDKs for Node.js, PHP, Python, Ruby, Go, Java, and more.
WhatsApp Business API
Deliver transactional WhatsApp messages globally through the WhatsApp Business API.
SMS API
Send and receive toll-free transactional SMS using your own dedicated phone number.
SMTP relay
Send email through standard SMTP credentials without writing any API code.
Real-time activity tracking
Follow every step of the message journey with mail server responses to spot deferrals and bounces.
Webhooks
Receive notifications for key email and SMS events to trigger workflows and monitor delivery.
Drag & Drop builder
Build transactional emails using pre-built templates or the drag-and-drop and HTML editors.
Suppression management
Automatically suppress bounces, unsubscribes, and spam complaints on your behalf.
Email verification
All plansVerify recipient addresses in bulk or real time via the API or in-app to keep deliverability high.
Team management
Manage team access with roles, 2FA, and SSO across your whole organization.
MailerSend Pricing
View full pricing →- 500 emails/month
- Email API and SMTP relay
- Drag & Drop email builder
- Email threads support
- 10 email verification credits
- 5,000 emails/month
- User roles & permissions
- Bulk emailing
- 1 domain and 10 templates
- 1,000 daily API requests
- 100 email verification credits
- 50,000 emails/month
- 100 SMS/month
- Sender identities
- Remove MailerSend logo
- SMS API (USA and Canada)
- 100,000 daily API requests
- 50,000 emails/month
- 150 SMS/month
- Dedicated Account manager
- Deliverability consultation
- 7-days API logs retention
- 500,000 daily API requests
| Feature | Free Free | Hobby $7.00/mo | Starter $35.00/mo | Professional $110.00/mo |
|---|---|---|---|---|
| 500 emails/month | ||||
| Email API and SMTP relay | ||||
| Drag & Drop email builder | ||||
| Email threads support | ||||
| 10 email verification credits | ||||
| 5,000 emails/month | ||||
| User roles & permissions | ||||
| Bulk emailing | ||||
| 1 domain and 10 templates | ||||
| 1,000 daily API requests | ||||
| 100 email verification credits | ||||
| 50,000 emails/month | ||||
| 100 SMS/month | ||||
| Sender identities | ||||
| Remove MailerSend logo | ||||
| SMS API (USA and Canada) | ||||
| 100,000 daily API requests | ||||
| 150 SMS/month | ||||
| Dedicated Account manager | ||||
| Deliverability consultation | ||||
| 7-days API logs retention | ||||
| 500,000 daily API requests |
Pricing extracted from the product website and may change. Check the source for current details.
Frequently asked questions about MailerSend
What payment methods are available?
You can pay for your MailerSend subscription via credit/debit card or PayPal. The option to pay via bank transfer is available for Professional and Enterprise plans; contact the support team to arrange it.
Are there any limits to the free trial?
The free trial includes 500 emails/month, 100 API requests/day, and 1 day of log retention, while giving you access to all MailerSend Professional plan features for 14 days. It does not automatically convert to a paid subscription when it ends.
What is the trial domain?
The trial domain is a free domain you can use to test MailerSend before adding and verifying your own domain, so you can start sending right after signup.
Do you offer discounts for nonprofits?
Yes, nonprofit organizations are eligible for a 30% discount on paid plans. Sign up for the free trial and contact customer support with documentation proving nonprofit status to request the discount.
Is MailerSend free?
MailerSend offers a free plan with optional paid upgrades. See the pricing section for what's included in each tier.
How much does MailerSend cost?
MailerSend offers the following plans: Free, Hobby, Starter, Professional. See the pricing section for what's included in each tier and any per-seat or usage-based costs.