From the left panel menu, select the Settings tab near the bottom:
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Next, under the SETTINGS in-panel menu, select Carriers:
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To add a carrier, click Add Carrier:
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From the EIZ Select Carrier menu, select Sendle:
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Finally, to link your current Sendle account, enter your credentials including: Account, API Key (generated on your Sendle portal), and click Next. It is as easy as that! If you get stuck, contact support@eiz.com.au to assist you through the process.