Agencies send on behalf of many client domains and must isolate reputation per client.
What email send time optimization is#
Send time optimization chooses when to deliver each message, either by segment (time zone, historical engagement windows) or per recipient using predicted open behavior.
Why it matters#
Arriving when a person is actually checking mail lifts engagement, and engagement lifts reputation.
Implementation plan for marketing agencies#
- Capture time zone at signup or infer from engagement.
- Analyze past click timestamps by segment.
- Use your platform's per-recipient optimization if available.
- Spread large sends over hours to avoid rate limiting.
Priorities specific to marketing agencies#
Agencies send on behalf of many client domains and must isolate reputation per client. Weight your effort toward the steps above that address this constraint first, and measure with metrics that match how marketing agencies generate value from email.
Common mistakes#
- Sending everything at 9 a.m. in your own time zone.
- Blasting the full list in one minute and tripping provider throttles.
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.