I built Hail because I got tired of wiring together Twilio, email providers, compliance rules, and model providers every time I wanted an AI agent to communicate with users.

Good to be back with this new release of Hail (previous post in comment).

Here is what shipped lately:

1. Agents can now send emails/SMS during phone calls. This helps send a summary of the call or additional confirmation/information.

2. BYO provider for STT/LLM/TTS models: This helps set up a custom voice, LLM model, or support niche languages.

3. Agent self-signup skill file (https://hail.so/skill.md)

4. SMS supports 64 new countries, inbound and outbound. Compliance logic now handles STOP/HELP/START automatically.

5. Email now supports custom domains, deliverability tracking, and reusable attachments.

6. Pricing database expanded to 145 LLM/STT/TTS models: https://hail.so/costs

Context: I started Hail.so out of a struggle building AI agents for industrial and logistics companies, where agents needed to send or receive emails and SMS, and make phone calls, but the barrier to completing all the integration and compliance work was really high.

I ended up spending weeks and tons of tokens to get to a working setup, and several iterations to get it to actually work.

This can be used to build AI agents, but also any backend (API and python sdk available).

The project is open-source so you can self-host it or sign up for free.

I'd love feedback, especially from anyone building production AI agents. What communication features are still painful today?

Keep building!