SMTP, Relay and Deliverability

A list of SMTP, Email Relay and deliverability providers that matter

Looking for the right software to send your email and get it delivered? Below is our hand-curated list of SMTP, Email Relay and deliverability companies that matter, making it easier to go through and pick the best email send provider to get your emails delivered to the inbox

Bouncer


Email Verification and Validation Service
Bouncer is an email verification and email validation provider to help keep their email lists clean and deliverability high.
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EmailSuccess


High Performance Mail Transfer Agent (MTA)
EmailSuccess is an enterprise level SMTP Server and MTA (Mail Transfer Agent) solution for high volume email. EmailSuccess is fit for senders of any size: ESPs and Marketing Automation Companies.
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Flowmailer


Email delivery platform
Flowmailer makes sure every email gets delivered. Professional automated transactional email, notification and more types of messages. With redefined delivery from a highly reliable SMTP relay.
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Inboxroad


SMTP Service & Email Delivery service
Inboxroad outbound mail servers provide a solid foundation to ensure the highest inbox rates for your email.
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Mailgun is an SMTP relay service to send marketing and transactional emails. Developper focussed, they offer API email sending and managed email delievrability services.
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Mailjet


Powerful Emailing Service and Effective Email Solution
Mailjet is a powerful email service provider that ensures maximum insight and deliverability results for marketing and transactional emails.
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mySMTP


Global SMTP service
mySMTP.eu provides a cloud based SMTP sending system over dedicated and shared IPs.
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Ongage


Platform for email and Performance Marketers
Ongage is the first email marketing front-end platform that connects to multiple Email providers, ESPs and SMTP relays to increase deliverability and ROI
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Postmastery


Email infrastructure, deliverability & monitoring
Postmastery provides ‘best in class' tools & services for email infrastructure, email delivery optimization and email monitoring. Deliverability tools and services created for and by email deliverability experts.
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SendForensics


Email deliverability monitoring solution
SendForensics is a global provider of unique pre-emptive deliverability and network management solutions for email marketers, agencies, ESPs and enterprise-level high-volume senders.
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