toSend

Transactional email delivery API and SMTP service for developers, agencies and WordPress sites.

Used as a subprocessor by 1 company →

Subprocessors (5)

List updated Oct 13, 2026 · Checked Oct 27, 2026 · source disclosure ↗

vendor	purpose	evidence
Amazon Web Services Amazon Web Services, Inc. United States, Germany	Email delivery via Amazon SES.	“Amazon Web Services, Inc. \| United States; Germany (European Union)”
Cloudflare Cloudflare, Inc. European Union	Email data plane and hosting for the public marketing website.	“Cloudflare, Inc. \| European Union for the database and message-body storage”
Fly.io Fly.io, Inc. Germany	Routing for the SMTP relay.	“Fly.io, Inc. \| Germany (European Union)”
Hetzner Hetzner Online GmbH Germany	Hosting for the customer dashboard.	“Hetzner Online GmbH \| Germany (European Union)”
Stripe Stripe, Inc. United States	Payment processing, subscription billing, and credit purchases.	“Stripe, Inc. \| United States”

Amazon Web Services
United States, Germany

Email delivery via Amazon SES.

“Amazon Web Services, Inc. | United States; Germany (European Union)”
Cloudflare
European Union

Email data plane and hosting for the public marketing website.

“Cloudflare, Inc. | European Union for the database and message-body storage”
Fly.io
Germany

Routing for the SMTP relay.

“Fly.io, Inc. | Germany (European Union)”
Hetzner
Germany

Hosting for the customer dashboard.

“Hetzner Online GmbH | Germany (European Union)”
Stripe
United States

Payment processing, subscription billing, and credit purchases.

“Stripe, Inc. | United States”