Cloudflare Email ServiceCloudflare
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SMTP SenpaiMailSenpai
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Related Products
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About
Cloudflare Email Service is a cloud email platform for developers building applications, automated workflows, and AI agents. It combines outbound transactional email delivery with inbound email routing and programmable processing. Applications can send through a Workers binding, REST API, or SMTP, while incoming messages can be routed to Cloudflare Workers for validation, transformation, forwarding, and workflow automation. The service supports domain onboarding with SPF, DKIM, and DMARC configuration, and provides delivery logs and account-level controls. Developers can use it to send notifications, account and transaction messages, receive replies, process inbound messages, and connect email events to application logic. It requires Cloudflare DNS and uses the Cloudflare Workers platform for service access and billing; it is not a hosted mailbox or general-purpose email client.
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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.
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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
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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
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Audience
Developers and engineering teams that want to add transactional email sending, inbound email routing, or programmable email processing to applications and automated workflows.
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Audience
Developers, SaaS and app makers, web agencies and small businesses that need reliable transactional email
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$5/month
Email Routing is available on Workers Free and Workers Paid plans, with unlimited inbound emails. Sending to verified destination addresses is free on all plans. Sending to other recipients requires Workers Paid, which includes 3,000 outbound emails per account per month; additional email is $0.35 per 1,000. Workers Paid has a $5 monthly account minimum. Workers usage, including Email Routing Workers, is billed separately under Workers pricing.
Free Version
Supported
Free Trial
Not Supported
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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
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationCloudflare
Founded: 2009
United States
www.cloudflare.com/products/email-service/
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Company InformationMailSenpai
Founded: 2016
Italy
en.mailsenpai.com/smtp-senpai/
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Categories |
CategoriesSMTP 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 or 587, 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. |
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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
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Integrations
Cloudflare Workers
Supported
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
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Integrations
Cloudflare Workers
Not Supported
Django
Supported
Laravel
Supported
Magento
Supported
Node.js
Supported
PrestaShop
Supported
Supabase
Supported
WooCommerce
Supported
WordPress
Supported
n8n
Supported
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