> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Sender FAQs

> Get answers to the most common questions about Helius Sender including functionality, configuration, and rate limits

## Using Sender

<Accordion title="What is Sender and why is it faster than other transaction sending services?">
  Sender is a specialized service for ultra-low latency transaction submission. It optimizes transaction latency by sending to both Solana validators and [Jito](https://docs.jito.wtf/) simultaneously, providing multiple pathways for your transactions to be included in blocks.

  With seven regional endpoints, typical land-time is ≤ 1.5 slots.
</Accordion>

<Accordion title="Can I get a higher Sender API limit than 50 transactions per second (TPS)?">
  Yes! While the standard limit is 50 TPS per region, you can request higher limits and custom tip arrangements by [speaking with our sales team](https://www.helius.dev/contact).
</Accordion>

<Accordion title="How do I set tips and priority fees with Sender?">
  All transactions sent through Sender must include both tips and priority fees for optimal performance:

  **Tips**: Minimum 0.0002 SOL is required for Jito auction participation. Tips enable access to Jito's MEV infrastructure and auction-based transaction inclusion.

  **Priority Fees**: Use `ComputeBudgetProgram.setComputeUnitPrice` to prioritize your transaction in the validator queue. Use the [Priority Fee API](/priority-fee-api) for real-time fee recommendations.

  **Why both are required**: Tips give you access to Jito's MEV auction, while priority fees improve your transaction's priority with validators—together they maximize inclusion probability.

  See the [Sender documentation](/sending-transactions/sender) for detailed code examples and implementation guidelines.
</Accordion>

***

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