Register once, start with 2 free credits, then buy more with Solana USDC when you need them. Simple API that just works.
Up to 80% cheaper than AgentMail.to ($20/mo). Same quality, better price.
All prices in USDC on Solana. Pay once, use forever — or subscribe for recurring credits.
| Action | Cost |
|---|---|
| Send email | $0.0012 (10k = $12) |
| Create inbox | $1.00 |
| Receive email | FREE |
| Agent memory (per day) | $0.05 |
| Monthly platform fee | $5 (min balance) |
# 1. Register and get API key
curl -X POST https://srun66.com/api/v1/register
# 2. Send an email
curl -X POST https://srun66.com/api/v1/send \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"to":"hello@example.com","subject":"Hello","body":"World"}'
# 3. Create an inbox to receive email
curl -X POST https://srun66.com/api/v1/inboxes \
-H "Authorization: Bearer YOUR_API_KEY"
# 4. Check balance
curl https://srun66.com/api/v1/balance \
-H "Authorization: Bearer YOUR_API_KEY"All credit purchases verify wallet ownership via Solana signature before crediting.
Lost your API key? Register again with the same wallet and email to generate a proof-of-ownership recovery link.
Recover abandoned inboxes by proving you own the original email address.
All emails are scanned. Spam, phishing, and malware are blocked before delivery.
Merchant Wallet: 55ShDWNLCZUQohJbE5dfWZPoTvusYD4FJpCMPNwCE2kW
Solana USDC • 1 credit = $1 USDC • Minimum 5 credit balance