Frequently Asked Questions about Chuck

What is Chuck?

Chuck is the fast, fun, and efficient way to process your inbound email on the go. Install the Chuck iOS app, connect Chuck to your email and then Delete, Archive and Move messages by the hundreds, or thousands. You can also star, unstar, and perform several other operations on any message or messages in your inbox.

What does Chuck cost?

Chuck comes packed with everything you need to clean up your inbox for free.

If you need more, subscribe to Chuck Pro ($2.99/mo) to unlock our advanced features. You will get:

• Smart Select: Chuck will automatically preselect unimportant messages in Multiple Selection mode, based on your behavior

• Advanced filters: You’ll be able to browse messages easily with advanced filtering options and dynamic cleanup suggestions.

Can I use Chuck with Apple iCloud email?

You can use Chuck with any,, or email address provided by Apple. However, Apple now requires the use of app-specific passwords. To learn more about app-specific passwords with Chuck, go here. Once you have created a password for Chuck, just enter it when you add your iCloud account. You may use any of the supported iCloud domain names (,, when you enter your username.

Can I use Chuck with a generic IMAP account?

Yes. Chuck supports most standard IMAP email services, in addition to most popular email providers. To add a generic IMAP Account, select "Add Another Account" and then choose "More >", and then select "IMAP - Other Provider." After entering your email address and password, you can enter detailed account settings if necessary. Or if Chuck can infer your settings from your email address, it will connect immediately!

Is Chuck dependent on Mailstrom?

No. Chuck and Mailstrom (Chuck's sibling at 410 Labs) are totally independent from each other, but you can easily use both tools. Chuck can process several thousand messages at once, while Mailstrom can handle millions at a time.

How does Chuck compare to Mailstrom?

Chuck does everything directly on your device, while Mailstrom runs on the web and in the cloud. So Chuck is faster, uses gestures very efficiently and has a different experience. Mailstrom was not designed for use on mobile devices. On the other hand, iOS devices simply do not have as much capacity as is available in Mailstrom's cloud environment, so for people with massive inboxes, the web service can load their entire inbox, whereas Chuck can only load the most recent several thousand messages at a time. Also, Mailstrom and Chuck have different features; Mailstrom allows for creating rules and blocking, while Chuck works with Read/Unread and Stars. In short, the two products are a nice complement.

How does Chuck interact with my email?

When you connect your email to Chuck, Chuck downloads certain information about your recent email messages including the subject line and other metadata (sender, date, subject, etc.). You can also use Chuck to read individual email messages.

When you take actions with Chuck (such as deleting or moving messages to a different folder) Chuck instructs your email service to carry out those actions. You can usually see those changes reflected in your connected email service within seconds.