Available worldwide
What is Mailspring?
A lightweight desktop application for Mac, Windows, and Linux that brings together multiple email accounts from different providers into one unified inbox. Core features run locally on your computer, with optional paid features for message tracking, scheduling, and productivity analytics.
Mailspring pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier available; Pro at $8/month
Free
FreeMulti-account email client with unified inbox, local sync, and productivity features
- Multi-account support
- Unified inbox
- Snooze
- Send later
- Mail rules
- Templates
- Grammar and spell checking
- Translation support
- Follow-up reminders
Pro
Adds message tracking and unlimited scheduling features
- Read receipts
- Link tracking
- Unlimited snooze and send later
- Mailbox analytics
- Contact and company profiles
What Mailspring does
The capabilities that matter for email clients, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- Local direct imap client
- Universal imap smtp exchange support
- ✓
- Keyboard shortcut only navigation speed
- -
- Split inbox AI auto categorization
- -
- Read receipts and open tracking
- ✓
- Snooze and scheduled send later
- ✓
- Generative AI LLM email drafting
- -
- Conversational chat layout view
- -
- Unified multi account inbox view
- ✓
- Pgp end to end encryption support
- -
- SOC2 type ii
- -
- ISO 27001
- -
- Pricing model
- Freemium
Platform & deployment
Independently observed- macOS
- Linux
- Windows
Integrations (8)
Independently observed- Gmail
- iCloud
- Office 365
- FastMail
- Outlook.com
- Yahoo!
- IMAP
- SMTP
Mailspring alternatives
Other email clients we track, ranked by the same independent score.
- SpikeEmail reimagined as AI-assisted team collaboration combining messaging, documents, and calls in one workspacelow · 25%
- SuperhumanAI-powered productivity suite that integrates with your existing apps and workflowsmedium · 61%
- Spark MailMulti-platform email client with intelligent organization and AI-powered writing assistancelow · 43%
- MimestreamIntegrated Gmail management tool built as a native macOS applicationlow · 26%
- Mozilla Thunderbirdlow · 27%
- Canary MailA cross-platform email client with built-in encryption, AI assistance, and privacy protections.low · 43%
Compare Mailspring
Side by side against other email clients, attribute by attribute, with a source on every value.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Mailspring, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 100 | 0.08 | 8.4 | ✓ |
| Capabilities | 67 | 0.08 | 5.6 | ✓ |
| Release cadence | 92 | 0.05 | 4.8 | ✓ |
| Development activity | 50 | 0.09 | 4.7 | ✓ |
| Price level | 80 | 0.05 | 4.2 | ✓ |
| Integrations | 26 | 0.09 | 2.4 | ✓ |
| Stars | 80 | 0.03 | 2.1 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Dependent projects | 0 | 0.06 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Security score | 0 | 0.04 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 38 | mediumsource · 2026-08-26 · 65% |
Adoption
| Attribute | Value | Evidence |
|---|---|---|
| Github stars | 17,762 | highsource · 2026-08-26 · 90% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Pricing model: freemium · Deployment model: local_direct_imap_client · Read receipts and open tracking: Yes · Snooze and scheduled send later: Yes · Unified multi account inbox view: Yes · Universal imap smtp exchange support: Yes | mediumsource · 2026-08-21 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 7 | mediumsource · 2026-08-21 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-08-26 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | GPL-3.0 | highsource · 2026-08-26 · 95% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-21 · 75% |