Privacy policy
Last updated: 2026-11-10. Applies to the SendLull add-in for Outlook and to sendlull.tenhatch.com.
In short: SendLull never reads your message’s subject, text or attachments, and nothing about your messages leaves your mailbox. Its settings are kept in your own mailbox. If you buy Pro, Stripe handles the payment.
Who we are
SendLull is made by Tenhatch (“we”). Contact: support@tenhatch.com, or by post at 26500 W Agoura Rd, Ste 102 #549, Calabasas, CA 91302, USA.
What SendLull reads, inside Outlook
When you press Send, SendLull reads, inside Outlook and only for that message:
- the delivery time already set on the message (so a time you set with Schedule send is kept);
- the addresses of its recipients, only when “Only hold messages that go outside my organization” is on, to compare their domains with yours.
It then sets the message’s delivery time a few minutes later. Outlook and your organization’s mail server hold and deliver the message; SendLull does not receive a copy. It never reads the subject, the text or the attachments, and sends nothing about the message anywhere.
What SendLull keeps
| What | Where | Why |
|---|---|---|
| Your settings: on or off, the hold time, “only outside my organization” and the domains you listed, the reminder on or off | Outlook’s add-in settings for your mailbox (“roaming settings”), stored by Microsoft with your mailbox | So your hold time follows you to every Outlook you sign in to |
| The day your free trial started, and the last answer about your plan (whether Pro is active, until when, and when it was checked) | The same roaming settings | To count the trial and to avoid asking about your plan on every message |
| If you buy Pro: your email address, plan, number of seats, payment records, and a one-way hash of your address (or of your organization’s domain, for an organization plan) | Stripe, in Tenhatch’s Stripe account | Billing, and so SendLull can find your plan again |
We have no database of our own for SendLull and keep no copy of any of this on our servers.
The plan check
Once Pro is on sale, SendLull asks sendlull.tenhatch.com whether your mailbox has Pro: at most about once a day, and when you choose “Check again”. It sends two one-way SHA-256 hashes, one made from your email address and one from its domain, never the address itself. Our server asks Stripe and answers yes or no, with the end date; it keeps nothing. Like any web request, this also shows our host, Vercel, your IP address, which Vercel may keep in its request logs.
Payments
You pay on Stripe’s own checkout page, in your browser. Your card details go to Stripe, under Stripe’s privacy policy, and never reach SendLull or us. We can see the email address, plan and seats of people who pay, to run billing and answer support questions.
Microsoft
SendLull runs inside Outlook and uses Microsoft’s Office add-in library, loaded from Microsoft’s servers. Your mailbox, your messages and the settings above are held by Microsoft under your Microsoft 365 or Outlook terms and Microsoft’s privacy statement.
What we never do
- No ads, no tracking, no analytics, no cookies.
- We never sell or share data about you.
- No person at Tenhatch reads your mail: SendLull never sees it.
Your choices
- Turn SendLull off in its settings, or remove it from Outlook (your admin can also remove it for everyone). Then it stops reading anything.
- To have your billing records deleted, or to ask what we hold about you, write to support@tenhatch.com. We keep payment records as long as tax law requires.
Changes
If this policy changes, the date at the top changes.