SpinUp Email vs CitrusMail

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SpinUp Email compared with CitrusMail
Detail	SpinUp Email	CitrusMail
What it does	Business email without the bloat	Free, open source email client with mail, calendar, contacts and AI
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Open source
Pricing	Standard Mailbox: $3.00 USD per mailbox/month (or $1.00/month billed annually). SpinUp Email Plus: $4.00 USD per mailbox/month (or $2.00/month billed annually). Archiving: $6.00 USD per mailbox/month (or $3.00/month billed annually). All plans backed by 30-day money-back guarantee. Save up to 67% wi	Not given
Key features	25 GB mailbox storage and 30 GB file storage IMAP, POP, and SMTP access Premium spam and virus protection ActiveSync across desktop and mobile Shared calendars and contacts MS Office-compatible apps Instant messaging Unlimited storage for archived email Advanced search capabilities 24x7x365 expert human support	Mail over IMAP or POP3 with search by sender, date and attachments Calendar with CalDAV sync in day, week, month and year views Contacts with CardDAV sync with email, phone, company and birthday fields Read receipts showing Delivered, Opened or Bounced status AI summaries, replies and questions using your own API key Message and reply translation between languages Custom signature for each mailbox Built-in settings for Gmail, iCloud, Outlook, Yahoo, Fastmail, Zoho, GMX, Yandex and Proton Bridge Open source template for building branded mail clients
What makes it different	Free and easy migrations from existing email providers 30-day money-back guarantee with no long-term contracts No data mining or ads 100% targeted uptime	Free and open source under MIT licence with no restrictions on use, modification or resale Works with any IMAP or POP3 mailbox including Gmail, iCloud, Outlook and others Calendar and contacts integrated in the same window with mail Bring your own AI from Anthropic, OpenAI, Google, xAI or Perplexity Build your own branded desktop app by customising the open source template
Community votes	0	0
DR (Domain Rating by Ahrefs)	13 −1 (down) since last check	11 −1 (down) since last check
Trust Flow (Majestic)	3	2
Citation Flow (Majestic)	23	28
Referring domains (Majestic)	22	41

4 details filled in for both companies.

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