Make sure you're logged into:
Once you're logged into both accounts, here's how to set up the Singulate<>Zapier integration and create your first singulated Zap flow:
Important note: When creating Singulate campaigns that you intend to send via Zapier <> Gmail, click Campaigns, click Create new, and under the “Sending with” dropdown, select Zapier as the sending with option.
That way your singulated campaigns will send properly via Gmail.