Blog
Notes from the sending side.
Deliverability, pricing, and what we learned letting agents near the send button.
- Aug 28, 2026 Pricing Why we price by volume, not contacts Every email tool we tried charged us for people we never wrote to. Herald charges for the messages you send, and here is the arithmetic behind that. 5 min read
- Aug 14, 2026 Product Inbound email as structured JSON Replies used to be the part of email nobody wanted to build. Herald now parses every inbound message into a document your code can read. 4 min read
- Jul 30, 2026 Agents What an agent needs before you let it near the send button We let coding agents send email through Herald for three months. Here is what they got wrong, and what we changed so they stop. 6 min read
- Jul 9, 2026 Deliverability Warming up a domain in 2026 Mailbox providers trust senders they have seen behave. Here is how Herald builds that history for a new domain, and why it takes three weeks. 5 min read