Talk to a human.
No ticket portals, no chatbots. Email the right address below and a person who works on SuperMailOS will read it and reply.
Support & general questions
Setup help, deliverability questions, product feedback, or anything else. If you're a customer, include your workspace domain so we can look things up faster.
Billing & refunds
Plans, invoices, and refund requests. Include the email on your account; approved refunds are issued by Paddle, our merchant of record.
Privacy & security
Privacy questions, data requests, or reporting a security issue. Security reports go straight to the people who can fix them.
Not a customer yet? The fastest answers to setup and pricing questions are on the pricing page, and you can test any domain with the free email checker.
Support hours & response times
We answer support mail Monday through Friday, roughly 9–18 UTC (and honestly, some weekends too). First replies usually land within a few hours during the week; nothing sits unanswered for more than one business day. Deliverability emergencies (sudden spam placement, bounced mail, DNS changes gone sideways) jump the queue: mark your subject line URGENT and it gets read first.
Billing questions, upfront
Plans are per mailbox per month, taxes handled at checkout by Paddle (our merchant of record), cancel anytime and keep access through what you’ve paid for. The 14-day trial never auto-charges and needs no card. Refunds for genuine misfires are approved quickly; email billing@supermailos.com with the address on your account and we’ll sort it, no forms to fill in.