SMTP Mailboxes

Boost your outbound with high-deliverability, reliable mailboxes!

Why Choose SMTP

IP rotation

We use IP rotation and send your campaigns from many different IP addresses, which makes your emails less visible to spam filters — if an IP stops working, we automatically swap it for a new one.

IP rotation

We use IP rotation and send your campaigns from many different IP addresses, which makes your emails less visible to spam filters — if an IP stops working, we automatically swap it for a new one.

Self-healing mailboxes

Did your mailboxes burn out? Not a problem!


We automatically pause them for 14 days — just enough time for them to recover — and then bring them back into rotation.

Self-healing mailboxes

Did your mailboxes burn out? Not a problem!


We automatically pause them for 14 days — just enough time for them to recover — and then bring them back into rotation.

Send links right away

Thanks to our Global Customer Domain Tracking technology, your links and images are automatically replaced with safe, trusted substitutes. This means you can include any images and links (for example, to Сal.com or Calendly) directly in your first email — without hurting deliverability.

Send links right away

Thanks to our Global Customer Domain Tracking technology, your links and images are automatically replaced with safe, trusted substitutes. This means you can include any images and links (for example, to Сal.com or Calendly) directly in your first email — without hurting deliverability.

Be sure your setup really works!

We run inbox placement tests every 3 days and display each mailbox's health score.

Learn more

Be sure your setup really works!

We run inbox placement tests every 3 days and display each mailbox's health score.

Learn more

Best pricing on the market

We offer SMTP mailboxes at the lowest prices — starting at just $1.9. And if you need higher volume, we’ll be happy to put together a custom offer for you.

Book a Demo with Our Experts

Book a Demo with Our Experts