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Sending.ac is a cold email infrastructure platform built to simplify and accelerate high-volume email outreach. Unlike traditional infrastructure setups that rely on rotating multiple domains and mailboxes to preserve deliverability, Sending.ac allows users to send thousands of emails per day from a single domain. The platform automates the technical setup - including DNS authentication (SPF, DKIM, DMARC) - and drastically reduces warm-up times, enabling teams to launch and scale campaigns with speed and efficiency.

Designed for lead generation agencies and high-output outbound teams, Sending.ac offers a streamlined approach to cold outreach infrastructure, removing the complexity of mailbox juggling while preserving high deliverability. It’s a unique solution for senders who want to scale quickly without the typical operational overhead.

Key Features

  • High-Volume Sending on a Single Domain: Send thousands of emails per day from one domain, eliminating the need for multi-domain rotation.
  • Unlimited Mailbox Creation: Generate as many mailboxes as needed under a single domain to support sequencing and scale.
  • Automated Setup in Seconds: Fully automates inbox provisioning and authentication record setup in approximately 14 seconds.
  • Accelerated Warm-Up Engine: Cuts warm-up time down to days instead of weeks, enabling faster campaign launches.
  • Optimized Deliverability: Infrastructure is engineered to maintain inbox placement despite high daily send volumes.
  • Simplified Management: Reduces the need for complex infrastructure planning and monitoring, making outreach operations more efficient.

Pricing

Custom pricing.

Pros

  • Simplified Email Management: Consolidates email outreach operations, reducing the need for multiple domains and mailboxes.​
  • Time Efficiency: Automated setup and rapid warm-up processes save significant time compared to traditional methods.​
  • Scalability: Supports rapid scaling of email campaigns without the logistical challenges of managing numerous domains.​

Cons

  • Limited Public Information: Lack of detailed feature descriptions and user reviews may make it challenging for potential users to assess suitability.​
  • Undisclosed Pricing: Absence of transparent pricing information requires direct inquiry, which may be inconvenient for some users.​

Want Cold Outreach That Performs Like This?

UniteSync didn’t just get replies - they built a high-conversion growth engine with Salesforge and Mailforge. If you’re serious about cold email, this is how you scale it.
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