# Seline

Seline (seline.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index.

- Page: https://thirdpartyindex.com/vendors/seline
- Documents last verified: 2026-10-06
- Transparency rating: 76/100 (how much it publishes, not how secure it is): Subprocessor list 30/30; Processing locations 8/8; Purposes 7/7; Data processing addendum 12/12; Trust center 0/8 (not found); Privacy policy 6/6; security.txt 0/6 (not found); Security page 0/5 (not found); Status page 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8
- Supply chain: relies on 3 tracked vendors directly, 21 within two hops, 142 within three; 1 tracked vendors rely on it directly, 2 within two hops, 2 within three
- Cite as: Seline, Third Party Index, https://thirdpartyindex.com/vendors/seline (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Subprocessor list | https://seline.com/dpa#subprocessors | 2026-10-06 | 2026-10-06 |
| Data processing addendum | https://seline.com/dpa | 2026-10-05 | 2026-10-05 |
| Privacy policy | https://seline.com/privacy | 2026-10-05 | 2026-10-05 |
| Terms | https://seline.com/terms-and-conditions | 2026-10-05 | 2026-10-05 |
| Status page | https://status.seline.com/ | 2026-10-05 | 2026-10-05 |

## Subprocessors (3)

As its own list states them.

| Subprocessor | Purpose | Location | Listed since |
|---|---|---|---|
| [Hetzner](https://thirdpartyindex.com/vendors/hetzner-online.md) | Hosting and databases | EU (Germany) | 2026-10-06 |
| [Postmark](https://thirdpartyindex.com/vendors/postmark.md) | Transactional email | GDPR-compliant; see Postmark's EU privacy information | 2026-10-06 |
| [Stripe](https://thirdpartyindex.com/vendors/stripe.md) | Payment processing | GDPR-compliant; see Stripe's GDPR documentation | 2026-10-06 |

Read from ([evidence](https://thirdpartyindex.com/evidence/50766)). CSV: https://thirdpartyindex.com/vendors/seline/subprocessors.csv

## Subprocessor of (1)

Tracked vendors whose own subprocessor lists name it, and what they say they use it for.

- [Buttondown](https://thirdpartyindex.com/vendors/buttondown.md): Privacy-focused website analytics

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Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api