How to set and update account sending limits

Learn about default sending limits for Gmail, Outlook, and SMTP accounts, how to edit them, when daily limits reset, and how sending intervals work.

Default sending limits

Change sending limits

Set a timezone for limit reset

Sending intervals

Next steps

Snov.io automates your outreach but doesn't send emails from its own servers. Your email provider sends them from your connected mailboxes. Before you start, connect a mailbox using this guide.

Default sending limits after connection

The sending limit directly affects deliverability. When you first connect a mailbox, it gets safe starting limits to avoid spam filters. 

Here are the starting limits we set based on your provider and connection type:

Our recommended starting limits per mailbox are:

• Gmail API or Google Workspace SMTP: 15 emails/day
• Microsoft Outlook: 5 emails/day
• SMTP (custom or any provider): 50 emails/day

These limits are safe for starting targeted, personalized cold outreach.

50 emails/day is not recommended for cold campaigns. Above this threshold, higher volume directly hurts deliverability and engagement.

The limits you may see in provider docs, like 2,000 per day, are the maximums for regular business email. Spam filters react to cold email at much lower volumes.

Keep the default limits at first to protect your domain reputation, then raise your volume gradually with a ramp-up schedule (see our scaling guide).

Edit account sending limits

You can update the limit for one mailbox or for multiple at once if the limit will be the same.

Change the limit for one mailbox

Go to Email Accounts and click Edit. Open the Daily sending limit tab and enter a value in Messages per day.

Change the limit in bulk

Select the accounts with the checkboxes and click Edit at the top. Change the settings in the left-side panel.

Set a timezone for limit reset

When a mailbox reaches its daily limit, campaigns pause for that account until the limit resets the next day.

Snov.io resets each mailbox limit once a day. By default, the reset occurs at 00:00 UTC.

How to choose your reset timezone

Match the reset timezone to your campaign’s schedule.

This ensures your daily limit resets right before the start of your sending window.

If your active sending window crosses midnight UTC with a default reset timezone, your daily campaign stats may show twice the sending limit.

A reset timezone change takes effect after the emails already scheduled in active campaigns finish sending in the original timezone.

Sending interval

By default, Snov.io sends emails at a random interval of 600 to 900 seconds (10 to 15 minutes).

This helps you avoid spam filters, because emails sent close together look like bulk sending. For the same reason, don't set short intervals.

If you need a predictable sending window, you can set a Fixed interval instead.

Make sure your campaign schedule is long enough to send the full daily limit. For example, 30 emails per day take about 6 hours.

Next steps

After you set the limits, go to Email Warm-up to start preparing your mailboxes.