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You don't need
three vendors.

Voice, SMS, and email usually need separate vendors, such as Twilio, SendGrid, and AgentMail. Hail provides all three channels through one MCP endpoint and one bill. Outbound calls and texts use a shared Hail number. If you want your own number, Hail buys it at the lowest price among several carriers.

1 vs 3+
Accounts to manage
100+ countries
Numbers you can buy
1 bill
Every channel, one invoice
Hail charges $0.10 a minute of voice, $0.018 a text, and $1 per 1,000 emails. You pay per use. There is no subscription. See pricingCreate account

Comparisons by competitor

Hail vs TwilioTwilio sells voice and SMS APIs. Its email is SendGrid, a separate product.ReadHail vs SendGridSendGrid sends and receives email. It has no voice or SMS.ReadHail vs VonageVonage sells voice and SMS APIs. Its email comes from a partner.ReadHail vs AgentMailAgentMail provides email inboxes for agents. Hail also provides calls and SMS.ReadHail vs VapiVapi hosts voice agents. On Hail, your agent places the call as a tool.ReadHail vs RetellRetell hosts AI phone operations. Hail provides calls, SMS, and email as agent tools.ReadHail vs the DIY stackA DIY stack is Twilio, an email vendor, and your own integration code.Read

Feature comparison

✓ means native. ~ means partial or add-on. – means none.

Capability
Hail
Twilio
SendGrid
AgentMail
Voice calls
✓
✓
–
–
SMS
✓
✓
–
–
Lowest number price among several carriers
✓
–
–
–
Email send and receive
✓
~
✓
✓
API, CLI, and MCP server
✓
~
~
✓
One-click agent connect
✓
–
–
~
Unified event stream
✓
~
~
~
LLM-optimized JSON
✓
–
–
✓
Numbers and deliverability handled
provisioning, routing, SPF, and DKIM
✓
~
~
~
One account and one bill
✓
–
–
–
Open source and self-hosting
✓
–
–
–

Twilio email is SendGrid, a separate Twilio product with its own account and bill. Twilio and Vonage also have MCP servers. These servers are per product, and some are alpha or community-maintained. Hail has one first-party MCP endpoint for all three channels. AgentMail supports inbound email and has a first-party MCP server. Hail also provides voice and SMS.

What Hail replaces

Twilio: voice and SMS

You do not set up SIP trunks or normalize webhooks. Outbound calls and texts use a shared Hail number. If you want your own number, Hail buys it at the lowest price among several carriers.

SendGrid: transactional email

Hail configures SPF, DKIM, and DMARC. Inbound email parsing is included.

AgentMail: agent email

Your agent reads and replies to email in an inbox. The inbox uses the same API key and bill as voice and SMS.

→ This comparison reflects typical setups. Competitor capabilities and pricing change. Verify current details on each competitor's site.

Stop stitching vendors, connect your agent to Hail.

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