SMTP Senpai

SMTP Senpai

MailSenpai
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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

WillItInbox is an email deliverability and validation platform for SaaS teams, developers, agencies, marketers, and newsletter operators that depend on outbound email. Teams can generate a unique test inbox, send a real message from their app or ESP, and receive a practical deliverability report across SPF, DKIM, DMARC, BIMI, DNS, reverse DNS, blocklists, TLS, headers, content, links, reputation, and sender infrastructure. WillItInbox also validates individual emails and bulk CSV lists using syntax, DNS/MX, disposable, role, typo, provider, catch-all, SMTP, suppression, and confidence signals. It includes domain monitoring, DMARC report analysis, sending source visibility, provider reputation checks, API keys, webhooks, scheduled checks, incident diagnostics, inbox placement checks, team workspaces, and exportable reports. Paid plans start at $39/month. PAYG credits are available for extra email validation and deliverability testing usage.

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 Not 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

SaaS teams, developers, agencies, marketers, newsletter operators, e-commerce teams, IT teams, and founders who send transactional, lifecycle, billing, onboarding, support, or marketing emails.

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 Not Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

€12.90/month
Free Version Not Supported
Free Trial Supported

Pricing

$39/month
Free Version Supported
Free Trial 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

WillItInbox
Founded: 2026
India
willitinbox.com

Alternatives

SMTP.com

SMTP.com

Ziff Davis

Alternatives

Categories

Categories

Integrations

No info available.

Integrations

No info available.
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