Using Mailgun with NodeMailer: How to send emails without a custom domain?

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1

Hey everyone,

I’m stuck trying to send emails with Mailgun and NodeMailer. Google’s recent changes to Gmail’s security made me switch to Mailgun, but now I’m encountering issues.

I set up my Mailgun account with Business verification, but when I attempt to send emails, I receive a ‘URL not found’ error. I suspect this might be because I haven’t configured a custom domain yet.

Can anyone guide me on how to test sending emails using Mailgun’s sandbox domain with NodeMailer? Your help would be greatly appreciated!

Thanks in advance,
José

2

I encountered a similar issue when transitioning to Mailgun. The key is to use Mailgun’s sandbox domain for testing. In your NodeMailer configuration, ensure you’re using the sandbox domain provided by Mailgun, not your custom domain. The sandbox domain usually looks like ‘sandbox[random-string].mailgun.org’. Also, double-check that you’re using the correct API key - Mailgun provides a separate key for the sandbox environment. Remember to verify recipient email addresses in your Mailgun dashboard when using the sandbox domain, as it has limitations on who can receive emails. Once you’ve got it working with the sandbox, moving to a custom domain is straightforward.

3

Hey jose, been there! quick tip: use mailgun’s sandbox domain for testing. it’s like sandbox123.mailgun.org. in nodemailer config, swap your custom domain with this. don’t forget to whitelist recipient emails in mailgun dashboard for sandbox. that should fix the url error. lmk if u need more help!

4

I’ve dealt with similar issues with Mailgun and NodeMailer before. In my experience, the ‘URL not found’ error usually stems from the domain configuration. Even for testing purposes, it’s important to correctly set up the sandbox domain provided in your Mailgun dashboard. Make sure you update your SMTP settings in NodeMailer with the sandbox details and use the corresponding API key. Also, remember that sandbox domains require you to authorize any recipient email before testing, which can prevent unexpected errors. Once your configuration is solid, moving to a custom domain becomes a straightforward upgrade.