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What is SMTP Senpai?

MailSenpai's SMTP Senpai acts as a reliable SMTP relay for all your email needs, including sign-ups, password resets, order confirmations, notifications, and contact forms generated by your applications, websites, and tools. You can easily connect using standard SMTP on port 2525 or 587 with STARTTLS, a REST API that delivers JSON responses, or a specialized form endpoint that works seamlessly with web forms, even on static websites. All outgoing emails are authenticated with DKIM using your domain, and we provide the necessary DNS records while verifying them for you. We automatically manage bounced addresses, keep a comprehensive 90-day log of all sent emails, and deliver an in-depth weekly report for your records. Instead of suspending your account when you exceed a specific limit, we offer warnings and guidance on how to address any issues that arise. Our operations and servers are located in the EU, and we provide customer support in both Italian and English through ticketing and email systems. You can explore our offerings with a 14-day free trial that requires a credit card for registration (cancellation is available at any time), and after the trial, you can choose a subscription plan starting at €12.90 per month for up to 10,000 emails annually. With this service, you can enjoy dependable email delivery while benefiting from the flexibility and support tailored to enhance your communication requirements. Additionally, our commitment to data security and compliance further strengthens our service's reliability.

What is Mailtrap?

Mailtrap is a modern email delivery platform for developer and product teams sending emails at scale. It provides a flexible RESTful API and SMTP service with a focus on high inboxing rates, fast delivery, and 24/7 technical support from deliverability experts. Mailtrap ensures 99.99% uptime with dedicated IPs, auto warm-up, and sender reputation protection through multi-tenant accounts. Quick integration is available via ready-to-use code snippets and SDKs for major programming languages, with 30-day access to email logs. Trusted by over 150,000 monthly active users, including Yelp, PayPal, Atlassian, and Adobe.

Media

Media

Integrations Supported

Laravel
Node.js
Supabase
n8n
Django
Magento
PrestaShop
WooCommerce

Integrations Supported

Laravel
Node.js
Supabase
n8n
AccessOwl
Claude
Claude for Legal
Elixir
Heroku
Java
Lovable
Python
Symfony
Tabular
Visual Studio Code
Zapier

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Permanent free plan: 5,000 emails per calendar month, up to 200 per day and 30 in the preceding hour; one verified sender domain; 7-day sending logs; no card or expiry. Paid annual plans start at EUR 12.90/month plus VAT for 10,000 emails/month, with 90-day sending logs. The free plan does not automatically become a paid subscription.
Free Version

Pricing Information

$15/month
Mailtrap offers transparent and flexible plans to cover the needs of your business, separated into Email API/SMTP, Email Sandbox, and Email Marketing

Email API/SMTP - send transactional emails
- Free: 4,000 emails included
- Basic: from $15/mo and from 10,000 emails
- Business: from $85/month and from 100,000 emails
- Enterprise: from $750/month and from 1.5 million emails
- Custom: Tailored for high-volume senders with dedicated support.

Email Sandbox - test your emails
- Free: 50 test emails included
- Basic: $17/mo (or $14/mo, billed annually)
- Team: $42/mo (or $34/mo, billed annually)
- Business: $123/mo (or $99/mo, billed annually)
- Enterprise: $498/mo (or $399/mo, billed annually)

Email Marketing - send promo campaigns
- Free: 500 contacts included
- Essentials: $15/mo (or $12/mo, billed annually)
- Pro: $59/mo (or $47/mo, billed annually)
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS
Mac

Customer Service / Support

Web-Based Support

Customer Service / Support

24 Hour Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Online Training

Company Facts

Organization Name

MailSenpai

Date Founded

2016

Company Location

Italy

Company Website

en.mailsenpai.com/smtp-senpai/

Company Facts

Organization Name

Railsware

Date Founded

2007

Company Location

United States

Company Website

mailtrap.io

Categories and Features

Email APIs

Not specified

Email Deliverability

Not specified

SMTP

Not specified

Transactional Email

SMTP Senpai facilitates the delivery of transactional emails for applications, websites, e-commerce platforms, and business applications. This includes communications such as registration confirmations, password recovery messages, order confirmations, invoices, alerts, and inquiries via standard SMTP on ports 2525 or 587, as well as through a REST API or form endpoint. The service includes DKIM authentication using your own domain, a 90-day email activity log, automatic handling of bounces and complaints, and ensures that all servers and data storage are located within the EU.

Email Monitoring
Reporting/Analytics

Categories and Features

Email APIs

Not specified

Email Deliverability

DMARC Analytics
Deliverability Alerts
Deliverability Reporting
Email Address Verification
Email Content Testing
Email Previewing
IP Blacklist Monitoring
Inbox Placement Testing
Reputation Reporting

Email Testing

Accessibility Testing
DMARC Analytics
Deliverability Rates
HTML Validation
IP Blacklist Checking
Improvement Recommendations
Pre-Send Email Testing
Preview Across Browsers & Devices
Reporting / Analytics
Sender Reputation Scoring
Spam Testing

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