Send time optimization chooses when to deliver each message, either by segment (time zone, historical engagement windows) or per recipient using predicted open behavior.
What good looks like#
- Done: Capture time zone at signup or infer from engagement.
- Done: Analyze past click timestamps by segment.
- Done: Use your platform's per-recipient optimization if available.
- Done: Spread large sends over hours to avoid rate limiting.
What bad looks like#
- Seen in audits: Sending everything at 9 a.m. in your own time zone.
- Seen in audits: Blasting the full list in one minute and tripping provider throttles.
How to move from bad to good#
Work through the good list in order and re-verify after each change. Most teams find one or two items from the bad list already present; fixing those usually produces the largest improvement.
Frequently asked questions#
What is the best time to send marketing emails?
There is no universal answer; mid-morning local time performs well for many B2B lists, but your own data beats benchmarks.