You can connect with Folderly through SendGrid API if you use SendGrid as a main tool for email marketing communications.
First, you need to obtain a SendGrid API key, which will grant Folderly access to SendGrid mailing functionality.
You should create a new API key. Please, do not reuse the previously created API key!
To do so, create an API Key (Settings > API Keys) with appropriate permissions:
Click the [Create API Key] button.
Give your new API key a descriptive name.
Choose permissions level. We advise you to select a Restricted Access option.
Scroll down the permissions list and give full access to the Mail Send option.
Scroll further down and click the [Create & View] button.
In the next step SendGrid will display your newly created API Key, which you should definetely copy, as it is shown only once for security reasons.
Now you can connect a domain and mailbox with Folderly. To do so, on your Folderly home page click [Add mailbox] button and select "SendGrid" in the email service providers list. Click [Next step].
Put the API Key you copied from SendGrid in the "API Key" field.
In the next step fill in the "Email address" field with the SendGrid-connected email and "Sender Name".
Click the [Next step] button to connect your mailbox.