Before launching your campaign, review and configure the sending limits below. These rules help protect your sender reputation, keep you compliant with anti-spam regulations, and prevent contacts from being over-emailed.
All settings are configured under Settings → Email Sending Rules.
1. Per-User Hourly Cap
Limit how many emails each user can send per hour.
How to configure:
- Go to Settings → Email Sending Rules.
- Locate Per-User Hourly Cap.
- Enter the maximum number of emails allowed per hour.
- Click Save.
This prevents spam-like sending behavior and protects your domain's sender reputation.
2. Per-Contact Cooldown
Set how many days must pass before the same contact can be emailed again.
How to configure:
- In Email Sending Rules, find Per-Contact Cooldown.
- Enter the number of days required between emails to the same contact.
- Click Save.
This ensures contacts aren't over-emailed and supports healthier long-term engagement.
3. Hourly Cap Per Contact
Drip rules can now cap emails on an hourly basis per contact, not just per user — limiting how many emails a single contact can receive within a given hour, as an added layer of protection against over-communication.
How it works:
- The system applies an hourly send cap per contact.
- A cooldown period prevents repeat sends too close together.
- Sending is controlled within a defined time window.
4. Allowed Sending Hours
Restrict outbound emails to specific hours, so messages don't go out at night or during off-hours.
How to configure:
- Go to Email Sending Rules.
- Set your Allowed Sending Hours (e.g., 8:00 AM – 6:00 PM).
- Click Save.
Important: Sending time windows are based on the sender's time zone, not the recipient's. This ensures proper time zone compliance, schedules messages within the sender's working hours, and keeps delivery timing consistent across campaigns.
Example: If a sender is in EST and sets allowed hours of 8 AM–6 PM, emails will send during that EST window — even if the recipient is in a different time zone.
5. Campaign End Date
Stop a campaign from sending any further emails once a campaign's end date has passed — this applies to every recipient on the campaign, including anyone added after the end date was originally set.
How to configure:
- Open the campaign you want to set an end date for.
- Click Set End Date.
- Choose the date you want the campaign to stop sending.
- Click Save.
Important: Once the end date passes, sending stops completely — no exceptions. If you add new recipients to a campaign that already has an end date, remember to update the end date as well, or those new recipients won't receive any messages at all. Emails that have already been sent are not affected; this only prevents future sends.
6. Link a Contact Group to a Campaign
Automatically enroll contacts into a campaign when they're added to a selected group, instead of requiring recipients to be added manually one at a time.
How to configure:
- Open the campaign's Recipients settings.
- Select Link a Contact Group.
- Choose the group you want to link to this campaign.
- Click Save.
Once a group is linked, every contact added to that group is automatically added to the campaign as a recipient. This pairs especially well with a Lead Magnet button on a microsite: when a visitor clicks the button and is added to the linked group, they're automatically enrolled in the campaign — no manual step required.