head to head/Developer Tools

Send21 vs Sendburg

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.

Sendburg

Sendburg MCP Setup: Connect Claude & ChatGPT in 2 Minutes

community boosts

⚡ 0

pricing

Freemium

what it is

Step-by-step setup for the Sendburg MCP connector — connect Claude or ChatGPT to 250M+ B2B contacts, with working prompts, credit rules, and troubleshooting.