SMTP & API

Sender Rotation

Distribute your email sending across multiple accounts and providers automatically. OutSends rotates between your configured senders to maximize volume and protect reputation.

Sender Rotation Volume Scaling Multi-Provider

How it works

Get started with sender rotation in a few simple steps.

Configure senders

Add multiple senders from any combination of Gmail, SMTP, and API providers.

Set rotation rules

Choose between round-robin, percentage-based, or priority-based rotation.

Set daily caps

Configure individual daily limits per sender to protect each account.

Launch and scale

Launch campaigns and let OutSends handle the rotation automatically.

Why OutSends for sender rotation

Everything you need, integrated in one workspace.

  • Scale sending volume beyond any single account's limits
  • Protect sender reputation by distributing volume
  • Automatic failover between senders ensures delivery
  • Mix Gmail, SMTP, and API providers in one rotation

Related features

Explore more capabilities that work alongside sender rotation.

Frequently asked questions

Can I mix Gmail and SMTP senders in one rotation?

Yes, OutSends supports rotating between any combination of Gmail, SMTP, and API senders.

How does OutSends handle sender failures?

If one sender fails, OutSends automatically retries with the next available sender in the rotation.

Can I see which sender was used for each email?

Yes, campaign analytics show the sender used for each email in the delivery log.

Start Free

Ready to try sender rotation?

Create a workspace, connect a sender, and launch your first campaign \u2014 free, no credit card.