> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin/trigger-nodes/n8n-nodes-base.gmailtrigger/poll-mode-options.md).

# Poll mode options

Use the [Gmail Trigger node's](/integrations/builtin/trigger-nodes/n8n-nodes-base.gmailtrigger.md) **Poll Time** parameter to set how often to trigger the poll. Your **Mode** selection will add or remove relevant fields.

## Poll mode options <a href="#poll-mode-options" id="poll-mode-options"></a>

Refer to the sections below for details on using each **Mode**.

#### Every Hour mode <a href="#every-hour-mode" id="every-hour-mode"></a>

Enter the **Minute** of the hour to trigger the poll, from `0` to `59`.

#### Every Day mode <a href="#every-day-mode" id="every-day-mode"></a>

* Enter the **Hour** of the day to trigger the poll in 24-hour format, from `0` to `23`.
* Enter the **Minute** of the hour to trigger the poll, from `0` to `59`.

#### Every Week mode <a href="#every-week-mode" id="every-week-mode"></a>

* Enter the **Hour** of the day to trigger the poll in 24-hour format, from `0` to `23`.
* Enter the **Minute** of the hour to trigger the poll, from `0` to `59`.
* Select the **Weekday** to trigger the poll.

#### Every Month mode <a href="#every-month-mode" id="every-month-mode"></a>

* Enter the **Hour** of the day to trigger the poll in 24-hour format, from `0` to `23`.
* Enter the **Minute** of the hour to trigger the poll, from `0` to `59`.
* Enter the **Day of the Month** to trigger the poll, from `0` to `31`.

#### Every X mode <a href="#every-x-mode" id="every-x-mode"></a>

* Enter the **Value** of measurement for how often to trigger the poll in either minutes or hours.
* Select the **Unit** for the value. Supported units are **Minutes** and **Hours**.

#### Custom mode <a href="#custom-mode" id="custom-mode"></a>

Enter a custom **Cron Expression** to trigger the poll. Use these values and ranges:

* Seconds: `0` - `59`
* Minutes: `0` - `59`
* Hours: `0` - `23`
* Day of Month: `1` - `31`
* Months: `0` - `11` (Jan - Dec)
* Day of Week: `0` - `6` (Sun - Sat)

To generate a Cron expression, you can use [crontab guru](https://crontab.guru). Paste the Cron expression that you generated using crontab guru in the **Cron Expression** field in n8n.

**Examples**

If you want to trigger your workflow every day at 04:08:30, enter the following in the **Cron Expression** field.

```
30 8 4 * * *
```

If you want to trigger your workflow every day at 04:08, enter the following in the **Cron Expression** field.

```
8 4 * * *
```

**Why there are six asterisks in the Cron expression**

The sixth asterisk in the Cron expression represents seconds. Setting this is optional. The node will execute even if you don't set the value for seconds.

|   \*   |   \*   |  \*  |      \*      |   \*  |      \*     |
| :----: | :----: | :--: | :----------: | :---: | :---------: |
| second | minute | hour | day of month | month | day of week |


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