Email Infrastructure services

Cartika

Operational

Last checked Nov 3, 2026 6:22 AM UTC

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Cartika is an email delivery and SMTP relay service that helps businesses send transactional and marketing emails reliably with high deliverability rates. It provides email infrastructure solutions with monitoring, analytics, and technical support for email campaigns.

Helios

Operational

Last checked Nov 3, 2026 6:36 AM UTC

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Helios is an email delivery and management platform that helps businesses send, track, and optimize transactional and marketing emails at scale. It provides reliable email infrastructure with detailed analytics and deliverability monitoring.

Loops

Operational

Last checked Nov 3, 2026 6:14 AM UTC

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Loops is an email infrastructure and transactional email service that helps developers and companies send, track, and manage email communications programmatically.

MailChannels

Operational

Last checked Nov 3, 2026 6:25 AM UTC

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MailChannels is an email delivery and management platform that helps organizations send, deliver, and monitor transactional and marketing emails at scale. It provides infrastructure and tools to optimize email deliverability and prevent abuse.

Red Sift UK

Operational

Last checked Nov 3, 2026 6:10 AM UTC

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Red Sift is an email security and threat intelligence platform that protects organizations from email-based attacks, phishing, and credential compromise through advanced monitoring and threat detection. It provides visibility into email infrastructure risks and helps organizations secure their email supply chain.

SMTP2GO

Operational

Last checked Nov 3, 2026 6:55 AM UTC

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SMTP2GO is a transactional email delivery service that provides reliable SMTP infrastructure for sending emails at scale with detailed tracking and analytics. It enables developers and businesses to reliably deliver application-generated emails with high deliverability rates.

Unosend

Major Outage

Last checked Nov 3, 2026 6:36 AM UTC

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Unosend is an email delivery and communication platform that helps businesses send transactional and marketing emails reliably at scale. It provides email infrastructure services with deliverability optimization and tracking capabilities.

Warmbase

Operational

Last checked Nov 3, 2026 6:39 AM UTC

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Warmbase is an email warming and deliverability platform that helps improve email sender reputation and inbox placement by gradually increasing email volume with engagement signals. It enables businesses to establish trust with email providers before launching large-scale campaigns.