How many new conversations can I start per line each day?

Last updated: April 12, 2026

Last Updated: April 12, 2026

Customer-Facing Guide

Short answer

A practical Sendblue best-practice target is about 50 new conversations per line per day.

What that means

  • This is about net new conversations / brand-new contacts on that line.

  • Existing conversations are a different case and do not behave the same way as brand-new outreach.

  • A good working rule is to keep brand-new outreach paced thoughtfully instead of clustering it all at once.

Helpful companion rule

As a broader best-practice guideline, total daily conversations per line are often safest around roughly 150 or fewer, with new-contact outreach spread across the day.

Why this matters

  • Too much new outreach too quickly can hurt line health.

  • The problem is not just the daily total — it is also the pacing and spacing of those sends.

What to do if you need more capacity

  • Spread traffic across more lines.

  • Space messages out more gradually through the day.

  • Review whether your workflow is overloading one line instead of distributing traffic sanely.

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