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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 Mailfully?

Mailfully acts as a versatile hosted transactional email API specifically designed for developers who want to send and receive messages seamlessly from their applications. This platform enables teams to dispatch various types of communications such as receipts, password resets, sign-in links, and alerts through a REST API or Node.js SDK, while also allowing for the verification of unique sending domains and the use of customizable templates that include dynamic variables. It provides detailed logs for each message that document delivery events, and its webhooks can communicate information about deliveries, bounces, complaints, opens, and clicks back to an application endpoint. Additionally, Mailfully incorporates an automatic suppression system to exclude addresses that have previously bounced or filed complaints from future email campaigns. Beyond outbound email capabilities, the service supports inbound messages via both a webhook and API, along with domain and message management through a command-line interface. Users have access to analytics that track delivery performance and can utilize an MCP server that integrates with compatible AI coding tools for sending messages and monitoring their statuses. A test mode is also included, which directs test messages to a simulator prior to live sending, ensuring a smooth user experience. The platform provides a free plan along with several paid monthly options to accommodate varying requirements. With its extensive array of features, Mailfully is an excellent choice for developers aiming to improve their email communication approaches and increase efficiency. Furthermore, the emphasis on user-friendly tools makes it accessible even for those who may be new to email API integration.

Media

Media

Integrations Supported

Django
Laravel
Magento
Node.js
PrestaShop
Supabase
WooCommerce
WordPress
n8n

Integrations Supported

Claude Code
Cursor
Grok
Model Context Protocol (MCP)

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

$5/month
Free plan includes 3,000 sent emails/month and 100 received emails/month at a hosted address. Starter is $5/month for 10,000 emails/month; paid-plan overage is $0.40 per 1,000 emails. Test sends do not count toward the allowance.
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

MailSenpai

Date Founded

2016

Company Location

Italy

Company Website

en.mailsenpai.com/smtp-senpai/

Company Facts

Organization Name

Even Flow Solutions LLC

Date Founded

2025

Company Location

United States

Company Website

mailfully.com

Categories and Features

Email APIs

Not specified

Email Deliverability

Not specified

SMTP

Not specified

Transactional Email

Email Monitoring
Reporting/Analytics

Categories and Features

Email APIs

Not specified

Transactional Email

Not specified

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