---
id: object/codeunit/4620
type: object
title: Codeunit 4620 "SMTP Authentication"
summary: Codeunit 4620 "SMTP Authentication" in Email - SMTP API (System.Email). 10 public procedures, 1 events. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - email - smtp api
versions:
  introduced: "29"
  last_changed: null
  deprecated: null
review:
  state: derived
  by: null
  at: null
  flags: []
generated:
  at: "2026-10-11T00:31:51.816Z"
  pipeline: 0.2.0
  prompts: {}
  input_hash: f00cc771dd732302d722f9d091e89f37ef1ec871bab3f66ffc9b8a4f78d56c20
evidence:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/Email%20-%20SMTP%20API/app/src/Authentication/SMTPAuthentication.Codeunit.al
    title: src/Apps/W1/Email - SMTP API/app/src/Authentication/SMTPAuthentication.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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object_type: codeunit
object_id: 4620
name: SMTP Authentication
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
countries: []
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counts:
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  procedures: 11
  events: 1
  subscribers: 0
relations:
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  pages: 0
  extended_by: 0
  event_subscribers: 1
  calls: 0
  called_by: 5
  implements: 0
---

# Codeunit 4620 "SMTP Authentication"

> Codeunit 4620 "SMTP Authentication" in Email - SMTP API (System.Email). 10 public procedures, 1 events. 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/SMTPAuthentication.Codeunit.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Public |

## Events published

- `OnSMTPOAuth2Authenticate(var Handled: Boolean; var SMTPAuthentication: Codeunit "SMTP Authentication"; SMTPServer: Text)` (integration): Provide the credentials for SMTP Setup to authenticate using OAuth 2.0.
  - subscribers: [Codeunit 4516 "OAuth2 SMTP Authentication"](../codeunit/4516.md) OnSMTPOAuth2Authenticate

## Procedures

- `SetServer(Url: Text)`: Set the server url.
- `SetBasicAuthInfo(User: Text; Pass: SecretText)`: Set the username and password for authentication
- `SetOAuth2AuthInfo(User: Text[250]; Token: SecretText)`: Set the OAuth information for authentication
- `SetBasicAuthInfo(User: Text; Pass: SecretText; UserAccountId: Guid)`: Set the username and password for authentication
- `SetOAuth2AuthInfo(User: Text[250]; Token: SecretText; UserAccountId: Guid)`: Set the OAuth information for authentication
- `GetServer(): Text[250]` (internal)
- `GetUserName(): Text[250]` (internal)
- `GetPassword(): SecretText` (internal)
- `GetAccessToken(): SecretText` (internal)
- `GetAccountId(): Guid` (internal)

## Called by

From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete.

- [Codeunit 4616 "OAuth2 SMTP Auth"](../codeunit/4616.md) (4 calls: `Authenticate → GetAccessToken`, `Authenticate → GetServer`, `Authenticate → GetUserName`, …)
- [Codeunit 4513 "SMTP Connector Impl."](../codeunit/4513.md) (2 calls: `Send → SetBasicAuthInfo`, `Send → SetServer`)
- [Codeunit 4516 "OAuth2 SMTP Authentication"](../codeunit/4516.md) (2 calls: `OnSMTPOAuth2Authenticate → GetAccountId`, `OnSMTPOAuth2Authenticate → SetOAuth2AuthInfo`)
- [Codeunit 4617 "Basic SMTP Auth"](../codeunit/4617.md) (2 calls: `Authenticate → GetPassword`, `Authenticate → GetUserName`)
- [Codeunit 4619 "NTLM SMTP Auth"](../codeunit/4619.md) (2 calls: `Authenticate → GetPassword`, `Authenticate → GetUserName`)

## Implemented by

- [Codeunit 4517 "Dummy SMTP Authentication"](../codeunit/4517.md)
- [Enum 4511 "SMTP Authentication"](../enum/4511.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: "codeunit", object_name: "SMTP Authentication")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.