Frequently Asked Questions

What is mailboxlayer?
Who runs the mailboxlayer API?
How accurate is the SMTP Check?
Why wouldn't I send email to free email addresses like "Gmail"?
What's wrong with disposable email addresses like ""?
Is the mailboxlayer API service secure?
API Access & Features
How do I get an API Access Key?
What is an API request?
What happens if I exceed my API Request volume?
What is the API's uptime?
Plans, Pricing & Payment
What is the difference between Free and Paid Subscriptions?
Which Subscription Plan fits my needs?
Which payment methods are supported?
Can I also pay yearly?
How can I change my payment frequency?

Any more questions?