Secure SMTP authentication.
Connect your systems safely. Mailpro's SMTP authentication gives you your own username and password, so your relay can only be used by you — never exploited to send mail maliciously. Copy, paste, and start sending in minutes.
Simple, safe, and under your control
SMTP authentication is the simple and secure way to configure your platforms to a dedicated SMTP server that handles all your transactional email activity — quickly and safely. In your account you'll find your username and password to copy and paste directly into your application or program, along with the available ports and your maximum sending limit.
Authentication that just works
Your own username & password
Find your credentials in Settings → SMTP and paste them straight into your app — no code needed.
Regenerate on demand
Generate a new password whenever you integrate another system, keeping every connection secure.
Protected from misuse
Authentication ensures your SMTP server can't be used maliciously to send mail in your name.
Add unsubscribe links
Optionally add an unsubscribe link to your messages so recipients can opt out — configurable in the same settings.
Pair authentication with SPF and DKIM for maximum deliverability. Questions? Our support team is here to help.
Frequently asked questions
What is SMTP authentication?
Where do I find my SMTP credentials?
Can I regenerate my SMTP password?
Send securely through Mailpro's SMTP relay
Create your account, grab your credentials and connect in minutes — Swiss-hosted, no credit card.