What we store
When you subscribe, we record exactly these fields in our SQLite database:
- Your email address — to deliver the daily edition.
- Your arXiv category list — to filter what lands in your edition.
- Your keyword filter, if you provided one — for finer filtering within those categories.
- Your daily cap (default 4) — to size each edition.
- A signed token tied to your address — so management links in emails resolve to your account without a password.
What we don't store
- Your name, location, IP address, browser fingerprint, or any analytics.
- The papers you opened, replied with, or didn't read.
- Any tracking pixels in emails — the digest ships as plain HTML with no remote images and no read receipts.
- Cookies. The site sets none. Your subscription state lives in your email inbox, not your browser.
Third parties
We use three free-tier services to operate. Each receives the minimum data needed:
- MyMemory — receives paper titles and abstracts to translate to Spanish. Does not receive your email or any identifying information.
- Brevo (SMTP relay) — receives the outbound email body and your address to deliver it. Does not see your category list.
- Mailsac (reply inbox) — receives inbound replies containing your address and the paper numbers you sent. Polled every 10 minutes.
Your rights
You can:
- Edit your categories, keywords, or cap at any time via the manage link in any email.
- Unsubscribe with one click in any email, or reply STOP.
- Delete your record completely by replying DELETE — your row is purged within 24 hours.
- Audit what we run — the entire codebase is on GitHub, MIT-licensed.
Contact
This is a hobby project, not a company. Issues and questions go in the repo issue tracker. The maintainer is reachable through that channel.
Last updated: 20 Jul 2026.