Use cases / Digital agencies
Email for agencies
Multi-tenant by design: one account, many client domains
Digital agencies juggle dozens of clients. Sendersy lets you add any client domain, scope API keys per project, and run the whole agency on one subscription.
Pain points
- 1.Every client wants to send from their own domain, with their own DKIM/SPF. Using one ESP account mixes reputations.
- 2.Billing per-client is hard to split. Sendersy lets you run 1 account + per-API-key analytics.
- 3.Ready-made templates for common emails (welcome, contact form, newsletter) accelerate project kickoff.
How Sendersy solves it
- Unlimited custom domains on one subscription. Each domain gets its own DKIM, SPF, MTA-STS — isolated reputation.
- Per-API-key analytics in the dashboard. Track sends and delivery per client project.
- 6 production-grade templates in the gallery, plus a drag-and-drop editor to rebrand per client.
What the integration looks like
sh
# Add a client domain
curl -X POST https://api.sendersy.com/v1/domains \
-H "Authorization: Bearer $SENDERSY_API_KEY" \
-d '{ "name": "clientco.com" }'
# Returns DNS records to publish:
# - DKIM: postal-XXXX._domainkey.clientco.com TXT v=DKIM1; k=rsa; p=...
# - SPF: clientco.com TXT v=spf1 ip4:... -all
# - DMARC: _dmarc.clientco.com TXT v=DMARC1; p=quarantine; ...
# Once verified, send via:
curl -X POST https://api.sendersy.com/v1/emails \
-H "Authorization: Bearer $SENDERSY_API_KEY" \
-d '{ "from": "noreply@clientco.com", "to": ["u@example.com"], "subject": "Hi", "html": "<p>...</p>" }'Frequently asked
How many domains?
Pro plan — unlimited. One of our customers runs Sendersy for 22 domains simultaneously.