SMTP Senpai

SMTP Senpai

MailSenpai
lfr

lfr

Anonyfox
+
+

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About

SMTP Senpai is MailSenpai's EU-hosted SMTP relay and REST email API for password resets, order confirmations, notifications and website forms. Connect via SMTP on port 2525 or 587 with STARTTLS, the REST API, or a form endpoint for static sites. DKIM signing uses your verified sender domain, with SPF/DKIM/DMARC checks and automatic suppression of bounced addresses. The permanent free plan includes 5,000 emails per calendar month, up to 200 per day and 30 in the preceding hour, one verified sender domain and 7-day sending logs. No card or expiry. Paid annual plans start at EUR 12.90 per month plus VAT for 10,000 emails per month and 90-day logs. An email report is sent weekly on Monday. Official WordPress and Drupal plugins and open-source SDKs support integration. Written support is available in English and Italian. MailSenpai is the separate newsletter and email marketing platform.

About

lfr is self-hosted mail-server and newsletter software packaged as a single Go binary for Linux and macOS servers. It lets developers, self-hosters, and small teams host mailboxes for their domains, manage aliases and forwarding, search and reply to messages, and configure domain mail records. Newsletter tools support double-opt-in signup lists, Markdown-based issues, hosted archives and signup websites, one-click unsubscribe, bounce and complaint handling, and delivery through a configurable SMTP relay when direct sending is unavailable. The command-line interface runs locally or over SSH, with setup and diagnostic commands for server, DNS, and mail delivery tasks. lfr is distributed under the MIT license; the software itself is free, while users arrange and pay for their own server and any optional relay service.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, SaaS and app makers, web agencies and small businesses that need reliable transactional email

Audience

Developers, self-hosters and small teams who want to run their own mail server and newsletters

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

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 Supported
Free Trial Not Supported

Pricing

$0
The software is free and MIT-licensed. Users provide their own server; optional SMTP relay services are billed separately by their providers.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

MailSenpai
Founded: 2016
Italy
en.mailsenpai.com/smtp-senpai/

Company Information

Anonyfox
Germany
lfr.email/

Alternatives

SMTP.com

SMTP.com

Ziff Davis

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Grace Mail

Profit Visions s.r.o. (LINK-V)
Hermes SEG

Hermes SEG

Black Fish Networks LLC
SendGrid

SendGrid

Twilio SendGrid

Categories

Email APIs Supported
SMTP Supported

SMTP Senpai sends the transactional emails of apps, websites, online stores and business software (sign-ups, password resets, orders, invoices, notifications, contact forms) through standard SMTP on port 2525 or 587, a REST API or a form endpoint. DKIM on your own domain, 90-day sending log, automatic suppression of bounces and complaints, servers and data in the EU.

Categories

Mail Servers Supported

Transactional Email Features

A/B Testing Not Supported
Contact Database Not Supported
Dynamic Content Not Supported
Email Monitoring Supported
Mailing List Management Not Supported
Reporting/Analytics Supported
Spam Check Not Supported
Template Management Not Supported

Integrations

Amazon SES Not Supported
Django Supported
Laravel Supported
Magento Supported
Node.js Supported
PrestaShop Supported
SMTP2GO Not Supported
Supabase Supported
WooCommerce Supported
WordPress Supported
n8n Supported

Integrations

Amazon SES Supported
Django Not Supported
Laravel Not Supported
Magento Not Supported
Node.js Not Supported
PrestaShop Not Supported
SMTP2GO Supported
Supabase Not Supported
WooCommerce Not Supported
WordPress Not Supported
n8n Not Supported
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