# Provider transports

> Per-provider seams: the settings schema and validation each transport exposes to the admin UI, the delivery modes it offers, and the API-mode send and probe seams the Pro add-on implements.

| Hook | Kind | Tier | Since | Summary |
| --- | --- | --- | --- | --- |
| [`boolean_smtp_google_delivery_modes`](/hooks/boolean_smtp_google_delivery_modes/) | filter | B | 1.0.0 | Filters the delivery modes available for the Google/Gmail transport. |
| [`boolean_smtp_google_probe_one_click`](/hooks/boolean_smtp_google_probe_one_click/) | filter | B | 1.0.0 | Filters the result of a Google One Click connection probe. |
| [`boolean_smtp_google_send_one_click`](/hooks/boolean_smtp_google_send_one_click/) | filter | B | 1.0.0 | Filters the result of a Google One Click send. |
| [`boolean_smtp_google_settings_schema`](/hooks/boolean_smtp_google_settings_schema/) | filter | B | 1.0.0 | Filters the Google/Gmail connection settings schema before it is returned to the admin UI. |
| [`boolean_smtp_google_validate_settings`](/hooks/boolean_smtp_google_validate_settings/) | filter | B | 1.0.0 | Filters validation errors for a Google/Gmail connection using a delivery mode not implemented by the free transport. |
| [`boolean_smtp_google_validation_rules`](/hooks/boolean_smtp_google_validation_rules/) | filter | B | 1.0.0 | Filters the validation rules for Google/Gmail connection settings. |
| [`boolean_smtp_microsoft_graph_base_url`](/hooks/boolean_smtp_microsoft_graph_base_url/) | filter | B | 1.0.0 | Filters the Microsoft Graph API base URL. |
| [`boolean_smtp_outlook_delivery_modes`](/hooks/boolean_smtp_outlook_delivery_modes/) | filter | B | 1.0.0 | Filters the delivery modes available for the Outlook transport. |
| [`boolean_smtp_outlook_probe_app_permission`](/hooks/boolean_smtp_outlook_probe_app_permission/) | filter | B | 1.0.0 | Filters the result of an Outlook Application Permission connection probe. |
| [`boolean_smtp_outlook_probe_one_click`](/hooks/boolean_smtp_outlook_probe_one_click/) | filter | B | 1.0.0 | Filters the result of an Outlook One Click connection probe. |
| [`boolean_smtp_outlook_send_app_permission`](/hooks/boolean_smtp_outlook_send_app_permission/) | filter | B | 1.0.0 | Filters the result of an Outlook Application Permission send. |
| [`boolean_smtp_outlook_send_one_click`](/hooks/boolean_smtp_outlook_send_one_click/) | filter | B | 1.0.0 | Filters the result of an Outlook One Click send. |
| [`boolean_smtp_outlook_settings_schema`](/hooks/boolean_smtp_outlook_settings_schema/) | filter | B | 1.0.0 | Filters the Outlook connection settings schema before it is returned to the admin UI. |
| [`boolean_smtp_outlook_validate_settings`](/hooks/boolean_smtp_outlook_validate_settings/) | filter | B | 1.0.0 | Filters validation errors for an Outlook connection using a delivery mode not implemented by the free transport. |
| [`boolean_smtp_outlook_validation_rules`](/hooks/boolean_smtp_outlook_validation_rules/) | filter | B | 1.0.0 | Filters the validation rules for Outlook connection settings. |
| [`boolean_smtp_ses_settings_schema`](/hooks/boolean_smtp_ses_settings_schema/) | filter | B | 1.0.0 | Filters the Amazon SES connection settings schema before it is returned to the admin UI. |
| [`boolean_smtp_transport_settings_schema`](/hooks/boolean_smtp_transport_settings_schema/) | filter | B | 1.0.0 | Filters a transport's connection settings schema before the admin UI renders it. |