Definition
Email scheduling is the process of preparing an email campaign in advance and setting a specific date and time for it to be sent automatically. Instead of sending immediately, the email is queued to deploy at the scheduled time.
Email scheduling is a fundamental feature of every email marketing platform. It allows marketers to prepare campaigns during work hours while sending at the optimal time for their audience, including weekends, holidays, and overnight deliveries.
Scheduling Methods
| Method | Description | Best For |
|---|---|---|
| Manual date/time | Fixed send time for entire list | Broadcast campaigns, newsletters |
| Timezone-based | Sends at the same local time per timezone | Geographic audiences |
| Individual STO | Each subscriber receives at their optimal time | Behaviour-based STO |
| Recurring schedule | Same time every day/week/month | Regular newsletters |
| Queue-based | Campaign enters a queue sent over hours | Large lists, rate limiting |
Scheduling Best Practices
- Test before scheduling: Always send a test email to yourself before scheduling. Check links, images, and mobile rendering while there is still time to make changes.
- Build in buffer time: Schedule campaigns to send at least 24 hours before any deadline. This gives you time to react to unexpected issues.
- Consider timezone differences: If your audience spans multiple timezones, use timezone-based scheduling or choose a time that works across regions.
- Avoid peak inbox hours: Monday morning and Friday afternoon are the most crowded inbox times. Tuesday-Thursday mornings generally have less competition.
- Use send-time optimisation: If your ESP supports it, let the platform determine the optimal send time per subscriber based on their historical engagement patterns.
Average Benchmarks
| Scheduling Approach | Open Rate Impact |
|---|---|
| Batch send (same time to all) | Baseline |
| Timezone-based scheduling | +8-15% |
| Individual send-time optimisation | +15-30% |
Was this useful?
Related Glossary Terms
A/B Testing
A/B testing in email marketing is the practice of sending two variations of an email to a small sample of your list to determine which version performs better before sending the winner to the remaining subscribers.
Abandoned Cart Email
An abandoned cart email is a triggered message sent to online shoppers who added items to their cart but did not complete the purchase.
Abandoned Cart Sequence Flow
An abandoned cart sequence is an automated flow of emails that reminds shoppers who left items in their cart, over several sends, to return and complete their purchase.
Abandoned Cart Email
An abandoned cart email is an automated message sent to customers who added items to their online shopping cart but left without completing the purchase. It is one of the highest-converting email types in ecommerce.
AI Email Summary
An AI email summary is a short, machine-generated overview of an email's key points, shown by Gmail, Outlook and Apple Mail before a recipient opens the message. It is reshaping how email marketers think about subject lines, preview text and open rates.
AI Inbox Summary
An AI inbox summary is an AI-generated digest that condenses unread email — often highlighting news, actions and senders — changing how clearly your marketing email reaches and engages subscribers.
Frequently Asked Questions
Schedule 24-48 hours in advance for standard campaigns to allow for last-minute testing and approval. Schedule 1-2 weeks in advance for major campaigns. Avoid scheduling more than 30 days ahead as subscriber data and market conditions can change.
Most ESPs allow you to cancel a scheduled campaign up to the moment sending begins. Cancellation options are typically available in the campaign dashboard. Act quickly — once sending starts, you may not be able to stop it.
Automated sequences are triggered by subscriber actions, not scheduled times. However, individual emails within a sequence can be scheduled with delays (e.g. "send this email 3 days after the trigger").
Scheduling itself does not affect deliverability, but the send time you choose does. Sending when your audience is most likely to engage (and stay engaged) improves open rates, which indirectly supports good deliverability.
Tuesday through Thursday, 8-11am in the recipients local timezone, are the most consistently effective send windows. Test different times for your specific audience.