Average Ratings 0 Ratings
Average Ratings 0 Ratings
Description
SMTP Senpai, offered by MailSenpai, serves as the SMTP relay for emails generated by your applications, websites, and tools, handling everything from sign-ups and password resets to order confirmations, notifications, and contact forms.
You can connect using standard SMTP (port 2525 or 587 with STARTTLS), a REST API that provides JSON responses, or a dedicated form endpoint suitable for web forms, even on static sites.
All outgoing emails are DKIM-signed using your own domain, for which we supply the necessary DNS records and verify them on your behalf.
Automatically, we suppress bounced addresses, maintain a 90-day log of all sent emails, and provide you with a comprehensive weekly report.
Rather than suspending your account upon exceeding a certain threshold, we issue a warning and guide you on what needs to be addressed.
Our servers and data operations are based in the EU, and we offer support in both Italian and English through tickets and email.
Try us out with a 14-day free trial that requires a card for registration (you can cancel anytime), and then continue with plans starting at €12.90 per month for up to 10,000 emails on an annual subscription.
This service ensures reliable email delivery while offering flexibility and support for your communication needs.
Description
SuperMailOS provides managed business email services on your own domain, specifically designed for small teams. You simply provide your domain while SuperMailOS takes care of the mail server and ensures optimal deliverability through SPF, DKIM, DMARC, IP reputation management, and warmup, guaranteeing that your emails reach the inbox instead of being marked as spam.
The setup process is quick and user-friendly; you can verify your domain in seconds using one-click DNS with platforms like Cloudflare and DigitalOcean, or follow simple copy-paste instructions with any registrar, then invite your team members and begin sending emails immediately. Each user receives a genuine mailbox, with the added benefit of unlimited and free aliases, such as hello@ and support@.
The webmail interface is designed to be as intuitive as Gmail, featuring threaded conversations, instant search capabilities, keyboard shortcuts, labels, and dark mode, alongside support for IMAP and SMTP, enabling compatibility with any email application. Additionally, SuperMailOS provides a real-time deliverability dashboard to monitor where your emails land.
Pricing is straightforward with a flat rate per mailbox: the Pro plan costs $3 per month when billed annually and includes 10 GB of storage and three domains, while the Business plan is priced at $5 per month, offering 30 GB of storage and unlimited domains, along with customizable options for larger teams of 50 or more. A 14-day free trial is available with no credit card required, allowing you to experience the service risk-free.
API Access
Has API
Yes
API Access
Has API
No
Screenshots View All
No images available
Integrations
Django
Yes
Laravel
Yes
Magento
Yes
Node.js
Yes
PrestaShop
Yes
Supabase
Yes
WooCommerce
Yes
WordPress
Yes
n8n
Yes
Integrations
Django
No
Laravel
No
Magento
No
Node.js
No
PrestaShop
No
Supabase
No
WooCommerce
No
WordPress
No
n8n
No
Pricing Details
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 Trial
No
Free Version
Yes
Pricing Details
$3/month per mailbox
Free Trial
Yes
Free Version
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
MailSenpai
Founded
2016
Country
Italy
Website
en.mailsenpai.com/smtp-senpai/
Vendor Details
Company Name
SuperMailOS
Founded
2026
Website
supermailos.com
Product Features
Email Deliverability
DMARC Analytics
No
Deliverability Alerts
No
Deliverability Reporting
No
Email Address Verification
No
Email Content Testing
No
Email Previewing
No
IP Blacklist Monitoring
No
Inbox Placement Testing
No
Reputation Reporting
No
Transactional Email
A/B Testing
No
Contact Database
No
Dynamic Content
No
Email Monitoring
Yes
Mailing List Management
No
Reporting/Analytics
Yes
Spam Check
No
Template Management
No