Sending Test emails is a great way to make sure your campaign looks the way it should. While it is a convenient tool, it has some limitations. This article discloses why those limits exist, how big they are, and what can be done once the limit is reached.

As test emails can be sent to contacts that are not on the contact list, this allows scammers to abuse the system. We apply sending limits to ensure such activities don't occur.

We limit the number of test emails you can send per 24-hour period. Limits do not depend on the number of tested campaigns — the limit is global for the account. When multiple email addresses are included in a test, each one of them counts towards the total number of test emails used per account and per 24-hour period.
​For example, if you send one test to five email addresses, this counts as five test emails sent out.

The specific limits depend on the pricing plan you use:

If you have reached your daily test emails limit, consider using the Preview feature for your campaign. Our Preview allows you to see how the email will be rendered on both desktop and mobile devices.

What can I do if my test email isn't delivered? Firstly, check all the folders; the test emails are sent through the sender's test domains and have a few other differences compared to the real emails that you send that might get caught by spam filters (e.g. [Preview] is added to the subject line of test emails and this word gets caught by most of the email clients' spam filters). If the test email isn't in your inbox and you're sure you haven't run into the daily test limit, most likely this has happened because of the sender's email address you use. What you can do is change the sender's email address in case you use an email address on one of the default domains like Gmail, Yahoo, etc. Also, a test email may not be delivered if you use a sender's email on a custom domain (e.g. @storename.com) and send a test email to the email on the same sender's domain (or even to the same email address that you've used as your sender's email), in this case, just try sending a test email to an email address on any other domain and it should be delivered.