SMTP setup and configuration
Many apps and devices need an SMTP server to send email: your website, invoicing software, printers and scanners, custom systems. Set up badly, those emails bounce, go to spam, or leave an open door for spammers.
The short answer
SMTP is the standard way programs send email. We set up a reliable, authenticated SMTP service for your business, either through a professional sending provider or on your own server, with its own credentials, encryption (TLS), SPF, DKIM and DMARC for your domain, and correct settings in every app and device that sends.
What’s included
- Choosing the right SMTP option: your email provider’s SMTP, a dedicated sending service, or your own server.
- Authenticated sending with separate credentials per system, so one leak doesn’t expose everything.
- Encryption (TLS) on every connection.
- SPF, DKIM and DMARC for the SMTP service, aligned with your domain.
- Configuration in each app, website and device.
- Sending limits and logs, so you can see what was sent and spot abuse.
How we do it
- List everything that needs to send email.
- Choose the SMTP service to fit your volume and budget.
- Set up credentials, DNS and authentication.
- Configure each sender and test.
- Document the settings for future changes.
Custom SMTP solutions
For businesses with special needs (several brands, very high volume, strict data rules, or systems that can’t use modern authentication), we design a custom SMTP setup: relay rules, IP restrictions, dedicated sending domains and monitoring. See also business mail server setup.
Common questions
Can’t we just use our normal email account for SMTP?
For low volumes, sometimes. But providers limit how much you can send, and sharing a staff mailbox’s password with systems is a security risk. A dedicated sending setup is safer.
What SMTP port should we use?
Usually 587 with STARTTLS or 465 with TLS. Port 25 is for server-to-server delivery and is often blocked for sending from apps.
Our printer and scanner can’t send email any more. Can you help?
Yes. Older devices often stopped working when providers turned off simple password sign-in; we set up a relay that works with them.