SMTP Senpai

SMTP Senpai

MailSenpai
Unitpost

Unitpost

Work Reactor Inc.
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About

SMTP Senpai is the SMTP relay by MailSenpai for the emails your apps, websites and tools send: sign-ups, password resets, order confirmations, notifications and contact forms. Connect it via standard SMTP (port 2525, STARTTLS), a REST API with JSON responses, or a form endpoint for website forms, including static sites. Emails are signed with DKIM on your own domain: we provide the DNS records and check them for you. Bounced addresses are suppressed automatically, every email stays in a 90-day sending log and you get a weekly report. We don't suspend your account because a threshold was exceeded: you get a warning and we tell you what to fix. Servers and data in the EU. Human support in Italian and English, by ticket and email. 14-day trial at €0 (card required, cancel anytime), then from €12.90/month for 10,000 emails on the annual plan.

About

Unitpost is an end-to-end customer communications platform. You describe the workflow you want (a welcome series, shipping updates, a win-back campaign, etc.) and Unitpost builds it for you: ready to run across email, text, and WhatsApp. Today we support transactional + marketing email with a hybrid template system (visual + code), contacts, segments, campaigns and automations. The foundation is built horizontally from day one: one contact model, one event system, one pricing model (shared sending balance), and every action works the same way in the UI, via API, and through our agent (Ask Unit). We are not building another email tool. We are building the messaging layer that replaces the pile of tools teams currently stitch together and can be prompted for result, not manually built.

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 Not Supported
Linux Supported
Cloud Supported
On-Premises Not 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

Startups, Enterprises, Small Businesses, Developers, Marketers, Founders

Support

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

Support

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

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

€12.90/month
Prices in euro, VAT excluded. 14-day free trial: 0 EUR today, card required, up to 100 emails a day. Annual plan: 10,000 emails/month at 12.90 EUR/month; 20,000 at 22.90; 50,000 at 35.02; 100,000 at 43.10. 3-month plan: 10,000 emails at 25.80 EUR/month. Extra blocks of 1,000 emails with a spending cap you set. Dedicated IP from 15 EUR/month (included from 150,000 emails a month).
Free Version Not Supported
Free Trial Supported

Pricing

$10/month
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

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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
www.mailsenpai.com/smtp-senpai/

Company Information

Work Reactor Inc.
Founded: 2022
United States
www.unitpost.com

Alternatives

SMTP.com

SMTP.com

Ziff Davis

Alternatives

BlueFox Email

BlueFox Email

Innovaris Group
SendGrid

SendGrid

Twilio SendGrid
Mailjet

Mailjet

Sinch

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, 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

Email APIs Supported
Email Marketing 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

Claude Not Supported
Cursor Not Supported
Django Supported
Laravel Supported
Magento Supported
Model Context Protocol (MCP) Not Supported
Node.js Supported
PrestaShop Supported
Supabase Supported
WooCommerce Supported
WordPress Supported
n8n Supported

Integrations

Claude Supported
Cursor Supported
Django Not Supported
Laravel Not Supported
Magento Not Supported
Model Context Protocol (MCP) Supported
Node.js Not Supported
PrestaShop Not Supported
Supabase Not Supported
WooCommerce Not Supported
WordPress Not Supported
n8n Not Supported
Claim SMTP Senpai and update features and information
Claim SMTP Senpai and update features and information
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Claim Unitpost and update features and information