Serif vs Spike
Serif
serif.ai
Spike
spikenow.comSide by side
| Figure | Serif | Spike |
|---|---|---|
| Price from | $30/mo | $4/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | — | Yes |
| Plans published | 6 | 12 |
| Spec score · AI Email Assistants | 8.7 (#6) | 8.3 (#12) |
| Spec score · Email Collaboration Software | 8.8 (#9) | 8.4 (#10) |
| Audience | Serif describes its platform as automating email and document work for small businesses and operations teams. | Spike says its Email App suits people upgrading an existing email experience or managing multiple accounts, while Teamspace is for creating a new address and collaborating with a team. |
| Email providers | Serif connects to Google Workspace or Microsoft 365 and can also use an address of its own. | Spike says it works with existing email accounts including Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP accounts. |
| Product | Serif places an AI employee in shared addresses such as info@, support@, and billing@ to answer routine email. | Spike describes itself as an AI-powered inbox that brings email, calls, notes, tasks, and to-dos into one hub and turns email threads into chat-like conversations. |
| Security | Serif states that it is SOC 2 Type 2, GDPR, and HIPAA compliant, and that emails are not used to train general AI models or stored on its servers. | Spike says message data is encrypted with AES-256 using a per-message private key and that it has periodic external security audits. |
Plans
Serif
- Lite$30 a month
- Standard$50 a month
- Pro$200 a month
- Team$50 a month
- EnterprisePriced on request
- FreeFree
Spike
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
- Email App FreeFree
- Teamspace StarterFree
- Teamspace Team$4 a month
- Email App Pro$6 a month
In their own words
Serif
Serif places an AI employee in shared email addresses such as info@, support@ and billing@ to handle routine messages. It connects to Google Workspace or Microsoft 365, or can work with an address of its own. The assistant can qualify and route inquiries, answer common questions, collect paperwork, send quotes and follow up on unpaid invoices. Ambiguous or sensitive messages are escalated to the team, and users can approve replies before allowing independent operation. The shared inbox page offers $100 in free credits without a credit card, and each plan includes a 7-day free trial with full access. Listed plans include Lite at $30 a month, Standard at $50 a month, Pro at $200 a month, and Team at $50 a month per user; each is billed monthly. Serif says it is SOC 2 Type 2, GDPR and HIPAA compliant, and that emails are neither used to train general AI models nor stored on its servers. Apps are listed for web, macOS, Windows and iOS; Android is coming soon.
Spike
Spike combines email, calls, notes, tasks, and to-dos in a single hub, and presents email threads as chat-like conversations. It has a unified inbox, scheduled sending, and calendar tools, and runs on Android, iOS, macOS, web, and Windows. Spike AI can draft messages and replies, summarize conversations, and provide an assistant; free tiers list 10 queries for several AI features. Teamspace adds channels, shared inboxes, groups, collaborative documents and tasks, and audio and video meetings. Spike works with existing accounts such as Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP accounts. Cloud attachments can use Google Drive, Dropbox, or OneDrive, and calendars can connect with Google Calendar, Outlook, and Apple Calendar. Spike says it encrypts messages with AES-256 using a per-message private key, and undergoes periodic external security audits. The Email App Free plan includes one address, 60 days of search history, 1 GB storage, and 30 MB file uploads. Email App Pro is $6 a month billed annually; Ultimate is $12 a month billed annually.