Send21 vs Sendkit
Neck and neck on boosts. Profiles, pricing and deals below.
Send21
Try a crypto pay link on testnet, no account
community boosts
⚡ 0
pricing
Freemium
what it is
Make a real test payment from your own wallet on Bitcoin, Solana, Ethereum, Base, Arbitrum and Polygon test networks. No account, no email.
Sendkit
Email API, SMTP & Marketing Platform for Developers & AI Agents
community boosts
⚡ 0
pricing
Freemium
what it is
Deliver transactional emails, marketing campaigns, and drip sequences at scale. SDKs for every major language, real-time webhooks, and delivery tracking. Free tier available, no credit card required