Terms of use

Last updated: 2026-11-10.

These terms are between you and Tenhatch (“we”), 26500 W Agoura Rd, Ste 102 #549, Calabasas, CA 91302, USA, support@tenhatch.com. By installing or using SendLull you agree to them. If you install it for your organization, you agree for the organization.

What SendLull does

When you press Send, SendLull sets the message’s delivery time a few minutes later (1 to 10 minutes, your choice), so you can still change or delete it in your Drafts folder. Outlook and your organization’s mail server hold and deliver the message; SendLull cannot get back a message that has already been delivered.

SendLull depends on Outlook and Microsoft 365. If SendLull cannot load, Outlook sends your message as normal; if it cannot set a hold, Outlook asks whether to send anyway. In classic Outlook for Windows and on phones it does not hold mail. It runs by itself only where an admin deployed it. Please do not rely on it as the only check on mail that must never go out by mistake.

Free trial and Pro

• Every feature is free for 14 days from the first time SendLull runs for your mailbox.
• After that, SendLull Pro is $2 a month or $20 a year per person, paid in advance on Stripe’s checkout. Sales tax may be added where the law requires.
• An organization plan covers everyone at your organization’s email domain. Buy one seat for each person who uses SendLull, and change the number of seats when that changes.
• Plans renew automatically. You can cancel at any time from “Manage my subscription” in SendLull, or by writing to us; Pro then stays on until the end of the period you paid for.
• Refunds within 14 days of a charge, no questions asked: write to support@tenhatch.com.

Microsoft

SendLull is an independent product by Tenhatch. It is not made, endorsed or supported by Microsoft, and Microsoft is not responsible for maintaining, updating or supporting SendLull. SendLull uses Microsoft’s Office JavaScript library, which Microsoft licenses separately, and runs within Microsoft’s own terms for Outlook and Microsoft 365. Microsoft and Outlook are trademarks of the Microsoft group of companies.

Fair use

Use SendLull only for your own or your organization’s mail and within the law. Do not try to get around its plans, copy or resell it, or interfere with sendlull.tenhatch.com.

No warranty, and limits

SendLull is provided as is. We work to keep it working with Outlook as Microsoft changes it, but we make no promise that it holds every message or works without interruption. To the extent the law allows, we are not liable for indirect or consequential losses, and our total liability is limited to what you paid us for SendLull in the 12 months before the claim.

Changes and law

We may update these terms; when we do, the date at the top changes. These terms are governed by the laws of California, USA.