Email API & Deliverability
Infrastructure for Senders
HTsend runs your email campaigns and transactional mail through verified domains, live DNS checks, and reputation guards — ensuring every message reaches the primary inbox, not spam.
99.8%
inbox placement10/s
send rate129ms
DNS checkCampaign triggered
12,480 recipients
Hygiene & reputation guard
syntax · disposable · 0.1% complaint
SPF · DKIM · DMARC aligned
domain verified
Paced dispatch
10 emails / sec
Inbox
99.8%
Suppressed
0.2%
Trusted by developers, SaaS founders, and growth engineering teams
Send your first email in four lines.
Create an API key, point it at a verified domain and send. Same deliverability guards for transactional and marketing mail.
await fetch("https://htsend.com/api/send", {
method: "POST", headers: { Authorization: `Bearer ${KEY}` },
body: JSON.stringify({ from: "hi@yourbrand.com", to: "ana@example.com",
subject: "Welcome", html: "<p>Hello!</p>" }) });Why Developers & Marketing Teams Choose HTsend
| Feature | HTsend | Traditional SMTP providers |
|---|---|---|
| Deliverability guard | Hygiene filter and bounce/complaint checks before every send | Manual list cleaning and blocklist monitoring |
| Multi-tenant support | Isolated workspaces with separate contacts and domains | Shared accounts with mixed reputation |
| SPF/DKIM automated setup | Guided records verified against live DNS | Manual trial-and-error DNS setup |
| Pricing model | Pay per email sent — 200 free to start | Tiers based on contact count |
Volume you can see. Pacing you can trust.
Built-in protection, not add-ons.
Confirmed senders
Every From address is proven by a one-time link before it can send.
One-click unsubscribe
RFC 8058 headers on every marketing email, honoured instantly.
Live DNS checks
SPF, DKIM and DMARC checked against real records, never assumed.
List hygiene
Invalid, disposable and suppressed addresses are filtered before send.
Balance-safe sending
Credits are re-checked before every batch, so you never overspend.
Isolated workspaces
Each client's contacts, domains and data stay strictly separated.
Pro / Agency plan
emails per month
Your cost on HTsend
Billed monthly. Switch to annual to pay $89 a month instead.
Same volume elsewhere
Estimated annual saving
Compared with the cheapest plan above at the same volume. Legacy figures are list-price estimates.