Which SMTP server to use for my site?
Click here if you are looking for SMTP settings for your email client
If you need to send emails from your website, you can use localhost or 127.0.0.1 on port 25 to send your emails, without authentication.
If you are using PHP, you can also use the mail() function directly.
In both cases, make sure the sender matches your domain name and actually exists (e.g.: contact@mapetitentreprise.re and not noreply@mapetitentreprise.re). An invalid sender or one not hosted on your server (e.g.: mapetiteentreprisee@gmail.com) may be blocked by our antispam or the recipient's antispam.
Go further:
- How to improve the deliverability of your emails?
- Use a service like mail-tester to check if your email is properly formatted to avoid being flagged as spam
Updated on: 14/02/2026
Thank you!