Mailtrap vs. SMTP Senpai Comparison


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About Mailtrap is an email delivery platform for developers and product teams, providing a flexible RESTful API and SMTP service to send emails at scale. The platform is built with a focus on high inboxing rates, fast delivery, and 24/7 technical support from deliverability experts. Mailtrap ensures 99.99% uptime with dedicated IPs, auto warm-up, and sender reputation protection. Developers can integrate quickly using SDKs for major languages (Python, Ruby, PHP, etc.) and manage high-volume sending with a customizable API. The platform provides industry-best analytics with helicopter-view dashboards to monitor key metrics and 30-day logs for easy debugging. Trusted by over 150,000 monthly active users including Yelp, PayPal, Atlassian, and Adobe.	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 monthly 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.
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 Digital products’ dev and marketing teams that send high-volume emails with a focus on high deliverability.	Audience Developers, SaaS and app makers, web agencies and small businesses that need reliable transactional email
Support Phone Support Not Supported 24/7 Live Support Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $15/month Mailtrap offers transparent and flexible plans to cover the needs of your business, separated into Email API/SMTP (includes Email Marketing) and Email Sandbox. Email API/SMTP - send transactional & promo emails - Free: 3,5K emails/mo - Basic: from $15/mo and from 10,000 emails - Business: from $85/month and from 100,000 emails - Enterprise: from $750/month and from 1.5 million emails - Custom: Tailored for high-volume senders with dedicated support. Email Sandbox - test your emails - Free: 50 test emails/mo - Basic: $17/mo (or $14/mo, billed annually) - Team: $42/mo (or $34/mo, billed annually) - Business: $123/mo (or $99/mo, billed annually) - Enterprise: $498/mo (or $399/mo, billed annually) Free Version Supported Free Trial Not Supported	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
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 Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Railsware Founded: 2007 United States mailtrap.io	Company Information MailSenpai Founded: 2016 Italy en.mailsenpai.com/smtp-senpai/
Alternatives Debug Mail DebugMail.io	Alternatives SMTP.com Ziff Davis
MailHog	turboSMTP
MaxBulk Mailer Maxprog	Maileroo
Maileroo	SendGrid Twilio SendGrid
SendGrid Twilio SendGrid View All	Netcore Email API Netcore View All
Categories Email APIs Supported Email Deliverability Supported Email Testing Supported	Categories Email APIs Supported Email Deliverability Supported SMTP Supported Transactional Email 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.
Email Deliverability Features Deliverability Alerts Supported Deliverability Reporting Supported DMARC Analytics Supported Email Address Verification Supported Email Content Testing Supported Email Previewing Supported Inbox Placement Testing Supported IP Blacklist Monitoring Supported Reputation Reporting Supported Show More Features Email Testing Features A/B Testing Not Supported Accessibility Testing Supported Deliverability Rates Supported DMARC Analytics Supported HTML Validation Supported Improvement Recommendations Supported IP Blacklist Checking Supported Pre-Send Email Testing Supported Preview Across Browsers & Devices Supported Reporting / Analytics Supported Sender Reputation Scoring Supported Spam Testing Supported	Show More Features 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 Laravel Supported Node.js Supported Supabase Supported n8n Supported AccessOwl Supported Bolt.new Supported Claude Supported Elixir Supported Java Supported MaxBulk Mailer Supported PrestaShop Not Supported Retool Supported Ruby Supported Ruby on Rails Supported Stripo.email Supported Symfony Supported Vercel Supported Visual Studio Code Supported WooCommerce Not Supported v0 Supported Show More Integrations View All 26 Integrations	Integrations Laravel Supported Node.js Supported Supabase Supported n8n Supported AccessOwl Not Supported Bolt.new Not Supported Claude Not Supported Elixir Not Supported Java Not Supported MaxBulk Mailer Not Supported PrestaShop Supported Retool Not Supported Ruby Not Supported Ruby on Rails Not Supported Stripo.email Not Supported Symfony Not Supported Vercel Not Supported Visual Studio Code Not Supported WooCommerce Supported v0 Not Supported Show More Integrations View All 9 Integrations
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