Other Resources
How can I disable double opt-in confirmation? Watch video
To disable double opt-in, locate the field labeled your current campaign in the upper right corner. Click the down arrow to select a campaign and click the gear icon to the right of the campaign name.

In the Permission tab, uncheck boxes under Enable confirmed opt-in section to disable double opt-in for email and web form subscriptions. If you leave the boxes checked the confirmation messages will be sent. Import subscriptions are set by default to single opt-in (no confirmation message is sent).

You can also request single opt-in settings for API subscriptions, to do that please email our Compliance team: gr-compliance@cs.implix.com and provide them answers to questions listed here.
Note: Before the list is imported to your campaign it will be run against multiple algorithms that estimate the list quality. Depending on the results of the evaluation the list can be approved or rejected.