Cllavio — Email Marketing & SMTP API for Startups (Free Plan)
Twilio SendGrid's cloud-based email infrastructure relieves businesses of the cost and complexity of maintaining custom email systems. Twilio SendGrid provides reliable delivery, scalability & real-time analytics along with flexible API's. | Email marketing that actually lands: campaigns + SMTP API, deliverability guardrails (SPF/DKIM/DMARC), analytics, and transparent pricing. Start free. |
Open Tracking;Click Tracking;Unsubscribe Tracking;SMTP Relay;SMTP API;Web API;DKIM;SPF;Reputation Monitoring;ISP Monitoring;Domain Level Load Balancing;ISP Deliverability Outreach;Return Path Certified Partner;Support via Phone, Chat, Email, Online Support Portal | email marketing, campaigns, transaction emails, simple prices |
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