Notification Provider specifies the method of informing users about their SLAs. It may be defined as a communication channel.

These include configuring an already existing mail provider, creating a new custom SMS provider, and adding Slack or Hipchat as notification providers.

Adding a Provider:

1. Log in as a user with the Jira Administrators global permission.
2. Choose the cog icon> Add-ons. Select SLA PowerBox > Notification Providers to open the SLA Notification Providers page.
   Tip: Keyboard shortcut: g + g + start typing notification providers...
3. Click the Add Provider button.  
4. Select you Provider type. There are four options available. 
   
   
   
   
5. Confirm your choice with the Next button. 
6. You will be redirected to the Create Notification Provider page. Follow the configuration steps specified for each Provider type. 

Editing a Provider:

1. Log in as a user with the Jira Administrators global permission.
2. Choose the cog icon> Add-ons. Select SLA PowerBox > Notification Providers to open the SLA Notification Providers page.
   Tip: Keyboard shortcut: g + g + start typing notification providers...
3. Select Edit in the Operations section
4. Confirm with the Save button.

Deleting a Provider:

1. Log in as a user with the Jira Administrators global permission.
2. Choose the cog icon> Add-ons. Select SLA PowerBox > Notification Providers to open the SLA Notification Providers page.
   Tip: Keyboard shortcut: g + g + start typing notification providers...
3. Select Delete in the Operations section. 
4. Confirm with the Delete button. 

Disabling a Provider:

1. Log in as a user with the Jira Administrators global permission.
2. Choose the cog icon> Add-ons. Select SLA PowerBox > Notification Providers to open the SLA Notification Providers page.
   Tip: Keyboard shortcut: g + g + start typing notification providers...
3. Select Disable in the Operations section.   
4. Confirm with the Disable button. 

Sending a text notification using a Provider:

1. Log in as a user with the Jira Administrators global permission.
2. Choose the cog icon> Add-ons. Select SLA PowerBox > Notification Providers to open the SLA Notification Providers page.
   Tip: Keyboard shortcut: g + g + start typing notification providers...
3. Select Send test notification in the Operations section. 
4. Configure your test Notification fields.
5. Confirm with the Send button.

By selecting this option, you check if the notifications are sent properly. 

Below you can find different configuration screens. They may vary depending on the previously chosen Provider. 

Sms test notification

Slack test notification

Mail test notification

Useful links: www.twilio.com, www.support.twilio.com, www.slack.com/get-started/, www.clxcommunications.com, www.smsapi.pl, www.stride.com, https://confluence.atlassian.com/adminjiraserver075/configuring-jira-s-smtp-mail-server-to-send-notifications-935391635.html