SequenzySend Time Optimization

Send emails when people actually read them

Stop guessing the best time to send. Our AI learns when each subscriber opens emails and delivers at the perfect moment for maximum engagement.

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SOC 2 Compliant
99.9% Uptime
Sub-second Delivery

Why Sequenzy for Send Time Optimization?

Built for developers who want reliability without complexity.

Per-Subscriber Timing

Every subscriber has a different schedule. We learn when each person is most active and send accordingly.

Machine Learning Models

Our models analyze open patterns across time zones, days of the week, and historical engagement to predict the best send time.

Higher Open Rates

Emails that arrive when people are checking their inbox get opened. Simple as that.

Set It and Forget It

Enable STO once and it works automatically for all your campaigns. No manual scheduling required.

How it works

Get started with Sequenzy in just a few steps.

1

We analyze engagement data

Our models look at when each subscriber opens emails, clicks links, and engages with your content.

2

Build per-subscriber profiles

We create a timing profile for each contact based on their historical behavior and timezone.

3

Queue your campaign

When you send a campaign with STO enabled, we queue it for delivery over a window you specify.

4

Deliver at the optimal time

Each subscriber receives your email when they're most likely to be active, spread across your delivery window.

Built for real-world use cases

See how SaaS teams use Sequenzy send time optimization.

Global Audiences

If your subscribers span multiple time zones, STO ensures everyone gets your email at a reasonable local time. No more sending at 3am for half your list.

Example

Campaign sent at 9am local time for each subscriber, regardless of where they are.

B2B Email Marketing

Business users often check email at predictable times. STO learns these patterns and catches people when they're at their desk.

Example

Decision makers receive your email Tuesday morning when they're planning their week.

Newsletter Optimization

Newsletters compete for attention in crowded inboxes. Sending at the right time means you're at the top when they open their email app.

Example

Weekly newsletter arrives right before each subscriber's typical reading time.

Product Announcements

Big launches deserve maximum visibility. STO spreads delivery to catch each subscriber at their peak engagement window.

Example

Feature launch email gets 23% higher open rate with STO enabled.

How Sequenzy STO compares

Not all send time optimization is created equal

Feature
Sequenzy
Others
Per-subscriber timing
Partial
Machine learning models
Works with sequences
Rare
Custom delivery windows
Limited
Timezone awareness
No extra cost
—
Simple, transparent pricing

Start free, scale as you grow

One price for everything. No per-email fees, no hidden costs.

MonthlyYearly
Free Plan
$0/month
Up to 100 subscribers in sequences
2k emails/month
100100k+
100 subscribers in sequences2k emails/month

Free includes:

  • Up to 100 subscribers in sequences
  • 2,000 emails/month
  • Email campaigns
  • Email sequences
  • Advanced analytics
  • Advanced segments
  • Stripe integration(Segment by LTV & MRR)
  • API access
  • "Built by Sequenzy" branding
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Frequently Asked Questions

Everything you need to know about Sequenzy Send Time Optimization.

STO analyzes when each subscriber historically opens and clicks emails. Using this data plus timezone information, we predict the optimal send time for each person. When you send a campaign with STO enabled, emails are delivered over your specified window, reaching each subscriber at their best time.

STO works best with historical data. For new subscribers, we use aggregate patterns and timezone-based defaults. After a few email interactions, the model has enough data to make personalized predictions. Most subscribers have useful data within 2-4 emails.

Yes. When enabling STO, you specify a window (like 24 hours or 48 hours). Emails will be distributed across that window based on optimal timing. You can also set constraints like "only during business hours."

Yes. You can enable STO on individual emails within a sequence. Delay timers count from the optimized send time, not the original trigger time, so your sequence flow stays logical.

For new subscribers, we use smart defaults based on their timezone and aggregate patterns from similar users. The model improves as they interact with your emails.

STO spreads delivery over your chosen window. If you need immediate delivery for time-sensitive announcements, you can disable STO for that campaign. For most marketing emails, the higher engagement is worth the spread.

No. Send Time Optimization is included in all Sequenzy plans. You get smarter sending without paying extra.

Yes. The campaign report shows the distribution of send times and how they correlated with opens and clicks. You can see which timing patterns work best for your audience.

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