Inbox Zero: Open-source AI email assistant that sorts messages and blocks cold emails, offering self-hosting flexibility. Inbox Zero records 89,348 monthly visits with +6.8% month-over-month growth and Freemium, Free Trial pricing. Spamdrain records 185,960 monthly visits with +22.6% growth and Free Trial, Paid pricing.
The AI email assistant that sorts your inbox and drafts replies in your voice
Antispam service that keeps junk mail, phishing and viruses out of every inbox
| Dimension / Metric | | |
|---|---|---|
| Official Domain | getinboxzero.com | spamdrain.com |
| Pricing Model | Freemium, Free Trial | Free Trial, Paid |
| Monthly Visits | 89.35K (89,348) | 185.96K (185,960) |
| MoM Traffic Delta | +5.68K (+6.8%) | +34.27K (+22.6%) |
| Primary Market & Share | 🇺🇸 United States (43.3%) | 🇺🇸 United States (67.9%) |
| Direct Visits / mo | 26.08K | 154.26K |
| User Rating | 4.4 | 4.3 |
| Supported Platforms | Website | Website |
The AI email assistant that sorts your inbox and drafts replies in your voice
Incoming mail is sorted into categories like To Reply, Newsletter, Cold Email, Calendar and Notification as it arrives, using default rules or categories you define yourself.
Emails that need a response get a draft written in your tone and referencing your real calendar availability and CRM context, ready to review and send.
Stop cold outreach from ever reaching the inbox, see which newsletters you never read, then unsubscribe and archive them in bulk.
Dashboards reveal who emails you most, which senders dominate your inbox and how your habits change over time so you can act on it.
Antispam service that keeps junk mail, phishing and viruses out of every inbox
Works with iPhone, Android, Mac, PC, Office 365 and general IMAP/POP accounts, so one filter protects every device that reads the same mailbox.
Every new message is analysed before delivery, and suspicious senders, malicious links and infected attachments are stopped instead of reaching you.
Each time you mark something as spam or confirm it is legitimate, the filter learns your preferences and gets more accurate over time.
Held messages are not lost. You can open your Spamdrain account, inspect what was blocked, and release false positives with a click.
SpecialistDelivers a lightning-fast email productivity suite, but focuses on user speed rather than automated spam defense.
SpecialistDelivers a lightning-fast email productivity suite, but focuses on user speed rather than automated spam defense.
SpecialistCollaborative inbox and email management for teams
SpecialistCollaborative inbox and email management for teams
SpecialistOffers cross-platform email management with built-in AI writing tools without dedicated spam-filtering capabilities.
SpecialistOffers cross-platform email management with built-in AI writing tools without dedicated spam-filtering capabilities.
SpecialistFeatures a privacy-first email client with AI assistance, lacking Spamdrain's dedicated inbound spam protection.
SpecialistFeatures a privacy-first email client with AI assistance, lacking Spamdrain's dedicated inbound spam protection.
SpecialistAn AI executive assistant that works across your inbox, calendar and meetings
SpecialistAn AI executive assistant that works across your inbox, calendar and meetings
SpecialistReplaces your email client with an AI-powered interface, whereas Spamdrain filters existing mailboxes transparently.
SpecialistReplaces your email client with an AI-powered interface, whereas Spamdrain filters existing mailboxes transparently.
SpecialistUnifies multiple mail accounts into chat-like workspaces, focusing on team collaboration rather than automated spam blocking.
SpecialistUnifies multiple mail accounts into chat-like workspaces, focusing on team collaboration rather than automated spam blocking.
SpecialistFocuses specifically on email deliverability and spam testing rather than blocking unwanted incoming mailboxes.
SpecialistFocuses specifically on email deliverability and spam testing rather than blocking unwanted incoming mailboxes.
SpecialistAI email client that turns your inbox into clear next steps
SpecialistAI email client that turns your inbox into clear next steps
Provides comprehensive enterprise email governance and security, but is more complex to set up than Spamdrain.
Provides comprehensive enterprise email governance and security, but is more complex to set up than Spamdrain.
SpecialistEvaluates suspicious emails and links for fraud risk, but does not provide continuous automated mailbox screening.
SpecialistEvaluates suspicious emails and links for fraud risk, but does not provide continuous automated mailbox screening.
SpecialistThe AI agent that runs your team's inbox
SpecialistThe AI agent that runs your team's inbox
