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SPECIFICTION
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Kanmail vs Spark Mail

Kanmail

kanmail.io

Spark Mail

sparkmailapp.com

Side by side

FigureKanmailSpark Mail
Price fromFree$8.25/mo
Free planYesYes
Free trialYesYes
Open source——
WindowsYesYes
macOSYesYes
LinuxYes—
iOS—Yes
Android—Yes
Plans published46
Spec score · Email clients8.5 (#25)9.1 (#6)
Email providersThe site lists Gmail, Outlook, iCloud, Yahoo, Fastmail and Proton Mail as supported accounts.Spark works with IMAP, iCloud, Exchange, Outlook, Yahoo, and Google accounts.
Free planNoYes
MakerThe product site identifies Oxygem as its maker; Oxygem describes itself as a small team that designs and develops web applications, services and websites.Spark is part of Readdle, described on its About page as a privately held company with over 300 people working from 30 countries.
Offline accessYesYes
ProductKanmail turns email into a kanban board, with accounts in one view and emails as movable cards.Spark is a cross-platform email app designed to filter out distractions and help users focus on important messages.
SecurityThe maker says sensitive Google user data is encrypted in transit using TLS and stored locally on the device.Spark says it uses Google Cloud for data storage and encryption, and says user data is used for product optimization and is not shared with third parties.
SupportThe support page directs users to documentation, GitHub issues, or email support at [email protected].The pricing page lists self-service support, priority support, and dedicated customer success manager support, depending on plan.
Unified inboxYesYes

Plans

Kanmail

  • EvaluatePrice not published
  • Free evaluationFree
  • Personal$49, paid once
  • BusinessPrice not published

Kanmail pricing →

Spark Mail

  • FreeFree
  • Plus$10 a month
  • Pro$20 a month
  • Plus$99 a year
  • Pro$199 a year
  • EnterprisePriced on request

Spark Mail pricing →

In their own words

Kanmail

Kanmail has no write-up on Specifiction yet; its figures are above.

Visit kanmail.io

Spark Mail

Spark Mail is an email app for Android, iOS, macOS, and Windows that helps users focus on important messages. Smart Inbox separates priority mail from other messages, while a unified inbox brings multiple accounts together. It supports IMAP, iCloud, Exchange, Outlook, Yahoo, and Google accounts, as well as offline access, scheduled sending, and calendar tools. Teams can collaborate on email in real time, add private comments and shared information, delegate ownership, track progress, and set deadlines. Spark +AI can translate, summarize, draft, and proofread email; AI Assistant can find information and take action across emails, attachments, meeting notes, and events. AI is disabled by default, and AI features have plan-based monthly quotas. Listed integrations include Asana, Evernote, Google Drive, Microsoft Teams, Notion, Slack, Todoist, Trello, and Zoom, with availability varying by platform. The free plan includes unlimited accounts, Smart Inbox, Smart Notifications, essential email productivity, and Calendar. Plus costs $10 a month per user, and Pro costs $20 a month per user. A 7-day Plus and Pro trial is available when subscribed to directly in the app.

Visit sparkmailapp.com