n8n SMTP: the Send Email node with your domain
Alerts, form replies and automated reports: n8n’s Send Email node sends through SMTP Senpai, from your own domain.
- 14-day free trial
- Servers and data in the EU
- A log of every delivery
User: your-username Password: your-password Host: relay.mailsenpai.com Port: 2525 SSL/TLS: off (STARTTLS starts automatically) Disable STARTTLS: no
Four details, and your emails go out
They are the same for every program: you also find them, already filled in, in your customer area.
The sender must be on a domain verified in your area: otherwise the server refuses to send. For SPF, DKIM and DMARC records, use the free email DNS checker.
Three steps
Create the credential
In n8n: Credentials › New › SMTP, with the details shown here.
Add the node
Send Email, with From Email on a domain verified in SMTP Senpai.
Run the workflow
The SMTP Senpai log shows each delivery line by line.
Frequently asked questions
Why leave SSL/TLS off?
That option is for port 465. On 2525 the connection is secured with STARTTLS, which n8n starts automatically.
Does it work on n8n cloud and self-hosted?
Yes, on both.
Can I use Make or Zapier?
Yes: their SMTP modules also take server, port, username and password.
More integration guides
Try SMTP Senpai with your own software
A 14-day trial: connect your software, send your real emails and check the log line by line. Then decide.