SMTP Logic!

Scalable email delivery for transactional emailSendGrid transparently handles DKIM, SPF, ISP rate limits, content inspection, bounces, and spam reports to help users achieve higher deliverability. SendGrid integrates in minutes by just changing three SMTP settings.

Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your website or application.

Elastic Email offers an SMTP Relay, HTTP API, and fully featured browser based UI for managing marketing and transaction email.

Cloud Emailing by Mailjet. Create, send and track your marketing and transactional emails. Easy SMTP integration & cheap rates: boost your deliverability now!

Postmark removes the headaches of delivering and parsing transactional email for webapps with minimal setup time and zero maintenance. Send API and SMTP interface.

Send emails and know when they were opened. Keep detaile email logs to who they were sent and when. A memo system to help organizations notify thier employees and keep everyone on the same page. Simple and easy to use email memo service.

turboSMTP is a world-leading SMTP provider.Our outgoing mail server guarantees secure SMTP relays and it's ideal to send transactional emails. It also provides an amazing SMTP API for developers of cloud applications and a free SMTP server service.

SMTP2GO is an email service provider, performing the task of reliably delivering transactional and marketing emails, and providing reporting tools to track and visualize what is happening with outgoing emails.

Get 3 months free "Unlimited Transactional Emails" with Pepipost.

outMail providing a secure and trusted email relay (also known as SMTP Smart Host or mail proxy)

A simple API and Dashboard to manage and optimize emails sent by your application to your customers.

In the simplest terms AuthSMTP is an outgoing SMTP email server, it can be used to send email from any program, application or device that can connect to an SMTP server and authenticate with a username and password.

CritSend's full SMTP relay service and API ensures inbox delivery for your transactional mails. Never worry about email compliance, deliverability, IP reputation or blacklisting. Free email service from CritSend.

If e-mail marketing is important to you and you would like your emails to reach the inbox of your customers, we are there for you! As a major sender you are too often depending on the software your company chose years ago. We are an alternative. We are an independent SMTP relay service able to connect to many email campaign systems. We are open and accessible company and use a modern API, suitable for everyone. Great deliverability is important for your email campaigns. This is why we are always available for you whenever you have a question. We proactively monitor your email traffic and support you with advice and solid delivery reports. And all of this and more, for a competitive price. Many senders worldwide rely on InboxRoad. On a daily base we deliver millions of emails in the inbox of receivers. This number is growing fast! So improve your email marketing success and join us! »