Campaign Limits Explained: Domains, Accounts & Volume

Understand how SalesTarget controls domain limits, email account capacity, and sending volume to protect deliverability and sender reputation.

Published on Apr 6, 2026 · 5 min read

Campaign limits in SalesTarget.ai exist to protect deliverability, prevent spam issues, and keep email sending safe and predictable.

Why Campaign Limits Exist

Email providers closely monitor sending behavior. Sending too fast or from too few accounts can damage sender reputation.

SalesTarget.ai applies limits to:

• Keep sending patterns natural and human-like
• Protect inbox placement
• Prevent sudden volume spikes
• Reduce bounces and spam flags

Limits are not restrictions — they are safety controls that help you get better results over time.

Domain Limits

A domain is the part after the @ in your email address — for example, yourdomain.com.

How domains work in campaigns:

• Campaigns send emails from email accounts connected to a domain
• One domain can have multiple email accounts
• Each domain has its own reputation with email providers

Domain limits in SalesTarget.ai:

• One domain can have up to 5 email accounts
• You can connect or purchase multiple domains
• Campaign volume is spread across domains to reduce risk

Sending too many emails from one domain can lower inbox placement, increase spam complaints, and cause domain-level blocks. Using multiple domains helps isolate risk and scale safely.

Email Account Limits

An email account is a single inbox — for example, name@yourdomain.com.

How email accounts work in campaigns:

• Campaigns send emails through connected email accounts
• Each account has its own daily sending capacity
• Accounts can be rotated across campaigns

Recommended sending volume per account:

Around 30 emails per day per account (recommended). Sending gradually helps maintain a healthy sender reputation.

Sending too many emails from one inbox can trigger spam filters, increase bounce rates, and cause temporary or permanent blocks.

Campaign Sending Volume

Campaign volume is calculated using the number of active email accounts, sending limits per account, and the campaign schedule and gaps between emails.

Example calculation:

• 1 domain
• 5 email accounts
• ~30 emails per account per day

Safe daily send: ~150 emails per day across that campaign

To increase volume safely, add more email accounts and more domains — not higher per-account volume.

How Volume Is Handled Automatically

SalesTarget.ai automatically:

• Distributes emails across connected accounts
• Respects daily sending limits per account
• Applies gaps between emails
• Stops follow-ups when a lead replies

You do not need to manually calculate or manage sending limits. The system handles it.

What Happens If You Exceed Limits?

If daily limits are reached:

• Emails are queued — not dropped
• Sending continues gradually as capacity opens
• Deliverability protection remains active

This prevents sudden volume spikes and keeps sending safe and predictable.

Best Practices

• Start with low volume and increase gradually as your sender reputation builds
• Use multiple email accounts per domain (up to 5)
• Avoid sending high volume from a single inbox
• Separate campaigns by domain if you are scaling outreach
• Monitor bounces and replies regularly to catch deliverability issues early

Quick Summary

• Domains — control reputation at a higher level; up to 5 accounts per domain
• Email accounts — control daily sending capacity; ~30 emails/day recommended per account
• Campaign volume — total safe output across all accounts in the campaign
• Limits exist to protect deliverability, not slow you down

Final Takeaway

If you want to scale campaigns safely: increase accounts and domains — not per-account volume.

Campaign limits are the framework that lets you grow outreach while keeping inboxes healthy and replies coming.

Scale Outreach Without Burning Inboxes

SalesTarget.ai manages sending limits automatically — so you get volume and deliverability, not one or the other.