Use cases
STAMP, tuned to how you actually work.
Personas
Founders
The email client built for founders who don't have a Chief of Staff.
Investor email and customer email cannot share a queue. STAMP keeps the right thread in front of you while you have nine minutes between meetings.
Freelance designers
The email client for freelance designers who'd rather be drawing.
Three client domains, one personal Gmail, a dormant iCloud you forgot. STAMP collapses them into one quiet list, so you stop billing for time spent searching.
Freelance developers
The email client for freelance developers who already hate email.
GitHub notifications, client threads, Stripe receipts, recruiter spam. STAMP triages all of it without forcing you to leave the keyboard.
Agency owners
The email client for agency owners running fifteen client conversations at once.
Five client retainers, three shared inboxes, one personal Gmail. STAMP gives you the only view that actually matters: which seven threads need a reply today.
Consultants
The email client for consultants who bill the hour and lose two of them to email.
Four engagements. Three client domains. A personal account you check between calls. STAMP gives you the seven threads that matter and gets out of the way.
Indie hackers
The email client for indie hackers running three side projects from one Mac.
Day job inbox. Three product support addresses. A personal Gmail and a dormant iCloud. STAMP collapses them all into one calm queue and tells you which seven matter.
Ecommerce operators
The email client for ecommerce operators with five Shopify alerts open right now.
Customer questions, fulfilment fires, vendor threads, ad platform notifications, refund requests. STAMP separates customer signal from automated noise and tells you which seven need you today.
Sales reps
The email client for sales reps tracking eighty deals from one inbox.
Eighty active threads. Thirty-five buyers in five time zones. STAMP surfaces the seven you actually have to move today and snoozes the rest to the right hour.
Problems
Inbox zero, real version
Inbox zero on macOS, without declaring email bankruptcy.
Inbox zero is not a willpower problem. It's a triage problem. STAMP shows you the seven threads that actually need a reply today and quietly hides the other 40.
Best macOS email client
The best macOS email client in 2026 is the one that hides email from you.
Apple Mail is a list. Mimestream is Gmail-only. Superhuman is fast keyboard navigation on top of Gmail. STAMP is something different: a triage layer that tells you which seven threads matter today.
Newsletter overwhelm
Stop newsletter overwhelm without unsubscribing from everything you almost like.
You signed up for 41 newsletters in eighteen months. Some of them are good. None of them should bury the email from your sister. STAMP separates them automatically.
Providers
Gmail + Outlook
One inbox for Gmail and Outlook. Without the duct tape.
Run Workspace and Microsoft 365 from a single window on your Mac. STAMP unifies them, triages them, and replies from the right account every time.
iCloud + Gmail
One inbox for iCloud Mail and Gmail. Done properly this time.
Your @icloud.com address. Your @gmail.com. Maybe a Workspace domain too. STAMP collapses them into one calm queue and handles aliasing without asking.
Multiple Gmails
Three Gmail accounts. One window. No browser-tab gymnastics.
Personal Gmail. Workspace domain. Side-project Workspace. STAMP collapses every Google account into one queue and replies from the right one automatically.
Custom IMAP + Gmail
Your hosted domain. Your Gmail. One inbox, finally.
Custom IMAP via Fastmail, Migadu, Hetzner, your own server — connected alongside Gmail. STAMP triages both with the same shortcuts and replies from the right address.