Self-hosted webmail for your own domains, with routing rules, a calendar and an AI assistant whose drafts need approval
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Self-hosted alternatives to Outlook.com
Outlook.com is Microsoft's free web email service with a built-in calendar and contacts. One listed app does its main job and runs in your own Cloudflare account.
Each answer comes from the app’s README and source code, compared with the features Outlook.com describes on its own site.
Outlook.com features, app by app
| Feature | Mailflare |
|---|---|
| Send and receive mail with attachments | Yes |
| Focused Inbox that separates important mail | No |
| Rules, folders and categories | Partly |
| Archive, sweep and snooze | Partly |
| Calendar and contacts | Partly |
| Junk mail filtering | Yes |
| Mobile and desktop apps | Partly |
Self-hosted webmail for your own domains, with routing rules, a calendar and an AI assistant whose drafts need approval
- What a Outlook.com user would miss
- It has no Focused Inbox style sorting, no categories and no native apps, and extra user accounts need a paid Team license.
- What it adds
- Mail and attachments stay in your own D1 database and R2 bucket, and each domain can send through Cloudflare, Resend or Amazon SES.
- Yes Send and receive mail with attachments. Up to 10 attachments per message, 25 MB default limit.
- No Focused Inbox that separates important mail. No priority sorting listed in the README or docs.
- Partly Rules, folders and categories. Folders, stars and routing rules, but no categories.
- Partly Archive, sweep and snooze. Archive and snooze, no sweep listed.
- Partly Calendar and contacts. Calendar with .ics invitations and booking pages, per-user contacts, no CalDAV or CardDAV.
- Yes Junk mail filtering. Local spam scoring, Spam folder, Report spam and Not spam training.
- Partly Mobile and desktop apps. Responsive web app and JMAP for compatible mail apps, no native app.
Sources:github.com/hieunc229/mailflare#what-you-can-dogithub.com/hieunc229/mailflare/blob/main/docs/api.mdgithub.com/hieunc229/mailflare/blob/main/docs/providers.mdworkersnative.directory/api/apps/mailflaregithub.com/hieunc229/mailflare/blob/main/docs/spam-protection.mdsupport.microsoft.com/en-us/outlook/mail/focused-inbox-for-outlook