SMTP Senpai

SMTP Senpai

MailSenpai
InboxGreen SMTP Senpai

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InboxGreen:

About

InboxGreen is a free email deliverability checker that tests SPF, DKIM and DMARC records for any domain instantly, no account required. It shows exactly which DNS records pass, fail, or are missing, and explains what each result means for inbox placement. The platform includes 28 free DNS tools: DMARC analyzer, DMARC policy tester, SPF generator, SPF tester, DKIM generator, DKIM checker, DKIM selector finder, blacklist checker, email header analyzer, MX lookup, TXT lookup, WHOIS lookup, reverse DNS, DNS propagation checker, SMTP port checker, IP address info, and more. For teams that need to fix issues, the FixKit provides step-by-step DNS fix instructions for every problem found. The Monitoring plan watches up to 5 domains and sends alerts the moment SPF, DKIM or DMARC breaks. The Agency plan covers up to 30 domains with white-label PDF reports. Built for developers, marketers, and anyone who sends email and needs it to actually reach the inbox.
SMTP Senpai:

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.
InboxGreen:

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
SMTP Senpai:

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
InboxGreen:

Audience

Developers, email marketers, SaaS companies, digital agencies, IT administrators, and small business owners who send email and need to verify their DNS authentication records are correctly configured.
SMTP Senpai:

Audience

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

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
SMTP Senpai:

Support

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

API

Offers API Not Supported
SMTP Senpai:

API

Offers API Supported
InboxGreen:

Screenshots and Videos

No images available
SMTP Senpai:

Screenshots and Videos

InboxGreen:

Pricing

$19
Free Version Supported
Free Trial Not Supported
SMTP Senpai:

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
InboxGreen:

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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SMTP Senpai:

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
InboxGreen:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
SMTP Senpai:

Training

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

Company Information

InboxGreen
Founded: 2025
Sweden
inboxgreen.email
SMTP Senpai:

Company Information

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

Alternatives

SMTP Senpai:

Alternatives

SMTP.com

SMTP.com

Ziff Davis
1.0 out of 5 stars
InboxGreen:
SMTP Senpai:
InboxGreen:
SMTP Senpai:
turboSMTP

turboSMTP

3.3 out of 5 stars
InboxGreen:
GoDMARC

GoDMARC

Neuailes Global Technologies
5.0 out of 5 stars
SMTP Senpai:
SendGrid

SendGrid

Twilio SendGrid
3.9 out of 5 stars
InboxGreen:
SMTP Senpai

SMTP Senpai

MailSenpai
SMTP Senpai:
InboxGreen:

Categories

SMTP Senpai:

Categories

Email APIs Supported
SMTP Supported
SMTP Senpai:

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
InboxGreen:

Integrations

Django Not Supported
Laravel Not Supported
Magento Not Supported
Node.js Not Supported
PrestaShop Not Supported
Supabase Not Supported
WooCommerce Not Supported
WordPress Not Supported
n8n Not Supported
SMTP Senpai:

Integrations

Django Supported
Laravel Supported
Magento Supported
Node.js Supported
PrestaShop Supported
Supabase Supported
WooCommerce Supported
WordPress Supported
n8n Supported
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SMTP Senpai:
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