---
id: object/interface/smtp-auth
type: object
title: Interface "SMTP Auth"
summary: Interface "SMTP Auth" in Email - SMTP API (System.Email). 1 public procedures. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - interface
  - email - smtp api
versions:
  introduced: "29"
  last_changed: null
  deprecated: null
review:
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generated:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/Email%20-%20SMTP%20API/app/src/Authentication/SMTPAuth.Interface.al
    title: src/Apps/W1/Email - SMTP API/app/src/Authentication/SMTPAuth.Interface.al (releases/29.x)
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    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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object_type: interface
object_id: null
name: SMTP Auth
namespace: System.Email
app: Email - SMTP API
extends: null
first_version: "29"
last_version: "30"
present_in:
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
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counts:
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---

# Interface "SMTP Auth"

> Interface "SMTP Auth" in Email - SMTP API (System.Email). 1 public procedures. Introduced in BC29, still in BC30.

Email - SMTP API · System.Email · BC29-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/Email%20-%20SMTP%20API/app/src/Authentication/SMTPAuth.Interface.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Internal |

## Procedures

- `Authenticate(SmtpClient: DotNet SmtpClient; var SMTPAuthentication: Codeunit "SMTP Authentication")`: Authenticate the SMTP client with the SMTP account.

## Implemented by

- [Codeunit 4616 "OAuth2 SMTP Auth"](../codeunit/4616.md)
- [Codeunit 4617 "Basic SMTP Auth"](../codeunit/4617.md)
- [Codeunit 4618 "Anonymous SMTP Auth"](../codeunit/4618.md)
- [Codeunit 4619 "NTLM SMTP Auth"](../codeunit/4619.md)
- [Enum 4611 "SMTP Authentication Types"](../enum/4611.md)

## Across versions

- Present in: BC29-30
- Changed (declaration) in: none

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). The call sections above are our own, per object, from the BC29 call graph. For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "interface", object_name: "SMTP Auth")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.