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Documentation Index

Fetch the complete documentation index at: https://documentation.idenfy.com/llms.txt

Use this file to discover all available pages before exploring further.

By default, all emails sent by iDenfy go out from iDenfy’s own mail server. Custom SMTP lets you route a subset of those emails through your own mail server so they arrive from your domain.
Custom SMTP cannot be enabled from the dashboard. Contact iDenfy support and provide the credentials listed below.

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What Uses Your Custom SMTP

Not all email types are routed through partner custom SMTP. The split is as follows. Sent via your custom SMTP when configured:
  • Verification link emails sent to clients during KYC and KYB flows
  • Verification URL dispatch
  • KYB “request more info” emails and expiration extension reminders
  • Custom ad-hoc emails sent via the notification/admin APIs
Always sent via iDenfy’s mail server, regardless of your SMTP config:
  • Verification result notifications (approved, declined, expired, resubmitted)
  • AML monitoring alerts
  • Document and company expiration reminders
  • Webhook failure alerts
  • Finance reports and internal admin notifications

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What to Provide to Support

All four fields are required. Providing only some of them will not activate custom SMTP — the system falls back to iDenfy’s mail server silently.
FieldDetails
SMTP hostYour mail server address (e.g. smtp.yourdomain.com)
PortPort number, 0–65535. Standard TLS ports: 25, 587, 2587
UsernameSMTP authentication username
PasswordSMTP authentication password
TLS is enabled by default. If you use a non-standard port, the connection will still be attempted but may produce a warning.

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Prerequisites

Before reaching out to support, make sure the following are in place. Sender email address Your account must have a sender email address configured — this becomes the From address on outgoing emails. Without it, custom SMTP will not activate even if credentials are correct. Provide this address to iDenfy support when requesting setup. All four SMTP credentials There is no partial configuration. If any single field (host, port, username, or password) is missing, the system falls back to iDenfy’s global SMTP automatically.

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Fallback Behavior

If your SMTP server fails to deliver an email, iDenfy automatically retries using its own mail server. This is transparent — no action is needed on your part. The email will be delivered, but it will come from iDenfy’s address for that attempt.

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Checklist Before Contacting Support

  1. SMTP host, port, username, and password are all confirmed and ready to share
  2. TLS is supported on the port you plan to use (standard ports: 25, 587, 2587)
  3. You have a sender email address ready to provide — this will be used as the From address
  4. All four credential fields are available — partial credentials will not activate custom SMTP