Reliable automated guest messaging workflow - sequencing, retries, deliverability

Reliable automated guest messaging workflow - sequencing, retries, deliverability targets a $3.0B = 5,000,000 SMBs with guest interactions x $50/mo x 12 total addressable market with medium saturation and a year-over-year growth rate of 12-20% driven by automation adoption in SMBs and short-term rental growth.

Key trends driving demand: Short-term rental growth -- more guests increases message volume, making reliability critical; API maturity -- messaging providers provide richer delivery callbacks and status events to build reliable workflows; Expectations for instant communication -- guests expect timely, sequenced messages across SMS, email, and chat; Regulatory scrutiny -- GDPR and TCPA require auditable consent and delivery records.