Writing
Notes on lifecycle email, deliverability, and running a SaaS that sends its own mail.
Latest
Loops and Customer.io compared for SaaS lifecycle email in 2026: what each charges and on what unit, the math at 5,000 and 40,000 contacts, the feature lines that decide it, and where SendHeron fits and does not.
2026-10-15 / 8 min read
Customer.io and Mailchimp compared for SaaS lifecycle email in 2026: what each costs at 5,000 and 40,000 contacts, what counts as a contact, how automation and transactional email differ, and where SendHeron fits and does not.
2026-10-15 / 8 min read
Amazon SES is cheap because deliverability is your job. The production checklist we use: custom MAIL FROM, DMARC alignment, configuration sets, webhook security and tiered suppression.
2026-10-04 / 8 min read
Why mail passes every test and still lands in spam: how SPF, DKIM, and DMARC really work together, what Gmail and Outlook now require from senders, and the checklist that fixes it.
2026-10-04 / 6 min read
Customer onboarding emails for SaaS: the event-triggered sequence shape, seven templates you can adapt, and the best practices that separate activation emails from ignored ones.
2026-10-04 / 5 min read
Drip campaign blueprints that actually work: the five lifecycle sequences every SaaS needs, with the triggers, delays, branch logic, and the Stripe gotcha most trial emails get wrong.
2026-10-04 / 7 min read