OutMass

Mass email campaigns directly from Outlook Web

Turn Outlook Web into a professional mass email tool. OutMass brings mail merge, tracking, follow-ups, and AI-powered writing directly inside outlook.office.com and outlook.live.com — with full Microsoft 365 and personal Outlook.com support. ✨ WHAT YOU CAN DO 📧 Mail merge from CSV — personalize with {{firstName}}, {{company}}, and any column 🎯 Subject A/B testing (Pro) — split-test subject lines to find what converts ⏰ Scheduled sending (Starter+) — write now, deliver at the perfect time 🚦 Daily send limit — cap how many emails go out per day to protect your sender reputation ♻️ Auto-resume — hit your monthly quota mid-campaign? The rest sends automatically after your reset 🔁 Automatic follow-ups (Pro) — re-engage recipients who didn't open, and stop automatically as soon as someone replies 📚 Template library (Starter+) — save and reuse your best-performing emails 🤖 AI Email Writer — drafts your email from a short brief (Pro, 50/month) 📊 Open & click tracking — pixel tracking, click tracking, unsubscribe links 📎 OneDrive attachments — share files via OneDrive links instead of bulky attachments. Better deliverability, larger files, recipient analytics. 💬 Reply detection — daily Inbox scan flags real replies, the strongest engagement signal beyond opens and clicks. 📈 Campaign reports — open rates, click rates, full CSV export 🌍 13 UI languages — including Arabic RTL support 💼 BUILT FOR • Founders and SDRs running outbound from Outlook • Agencies managing client campaigns in their existing mailbox • Teams that can't or don't want to switch to Gmail-based tools • Anyone who has tried to mail-merge in Outlook and given up 💰 PRICING • Free — 250 emails/month, forever • Starter — $9/month, 2,500 emails/month + scheduled sending + templates + CSV export • Pro — $19/month, 10,000 emails/month + AI Writer + A/B testing + automatic follow-ups 🔒 YOUR DATA STAYS YOURS OutMass sends through your own Microsoft Graph API using OAuth 2.0. We never store the content of your emails on our servers. Your Outlook account, your data, your deliverability. 🛡️ 30-DAY MONEY-BACK GUARANTEE Not happy with your subscription? Get a full refund within 30 days — no questions asked. 🚀 Install OutMass and run your first campaign in 5 minutes.