CritSend

CritSend is a SMTP relay for developers.

20 Alternatives To CritSend

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250ok

250ok offers a SaaS-based platform to monitor and measure the deliverability of email networks.

AuthSMTP

AuthSMTP is the outgoing SMTP email service for e-commerce websites, mailing lists or email applications.
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BriteVerify

Email Validation & Email Verification reduces bounce rates up to 98%. Rapidly verifying email addresses has never been easier, just drag drop and deliver!

Email on Acid

Save time and drive revenue by testing your email before you hit send.

Google Cloud Platform

Google Cloud provides flexible infrastructure, end-to-security, modern productivity, and intelligent insights engineered to help your business thrive.

InboxFirst

InboxFirst is an email service provider.

Inboxman

Inboxman is an email delivery tool to maximize the deliverability.
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Litmus

litmus tests and tracks your email campaigns, so you can always put your best design forward.
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MailChimp

MailChimp is the best way to design, send, and share email newsletters.

MailMonitor

MailMonitor provides email marketers with tools to track, test, and improve the deliverability rates of email broadcasts.

Postmark

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

PowerMTA

PowerMTA is an industrial-strength software for high-volume email delivery.

Return Path

Inbox placement solutions from Return Path helps improve email deliverability and increases email marketing ROI.

SMTP2GO

SMTP2GO is the scalable, reliable email deliverability solution. Worldwide servers, a robust API, and powerful reporting set us apart. Try our free plan!

SendInBlue

Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.

SocketLabs

Marketing & transactional email delivery platform

VoloMP

VoloMP is an email marketing platform for high-volume emailers. Ideal for affiliate marketers mailing to 500K+ a day.
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Bounce

Store your bags/luggage in local hotels & shops
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eDataSource

eDataSource offers competitive and inbox deliverability intelligence and email design visualization tools.
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turboSMTP

turboSMTP is a reliable, powerful, easy-to-use SMTP server that maximizes the deliverability of all…