Does 2Do support IFTTT?

Yes, indirectly. Point IFTTT at your private Mail to 2Do address and anything it sends there becomes a task. Anywhere you can route email becomes a capture pipe, including Slack messages, starred email, RSS items, smart-home triggers, and more.

Mail to 2Do works on Mac, iPhone, and iPad, and each device gets its own private address. 2Do for Android does not include it; there, use Toodledo's own email-to-task feature if you sync through Toodledo. On Mac you can also automate with URL Schemes and the macOS Shortcuts app.