eM Client
Spark
| Feature | eM Client | Spark |
|---|---|---|
| Pricing | Free / from $49.95/mo | Free / from $7.99/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.4 / 5 |
| Best For | professionals, windows-users, outlook-alternatives, small-businesses | professionals, small-teams, freelancers, mac-users |
| Founded | 2007 | 2015 |
| ✓ | ✗ | |
| Calendar | ✓ | ✗ |
| Contacts | ✓ | ✗ |
| Tasks | ✓ | ✗ |
| Chat | ✓ | ✗ |
| Pgp Encryption | ✓ | ✗ |
| Smart Inbox | ✗ | ✓ |
| Ai Writing | ✗ | ✓ |
| Team Email | ✗ | ✓ |
| Scheduling | ✗ | ✓ |
| Templates | ✗ | ✓ |
| Priority Sorting | ✗ | ✓ |
✓ eM Client Pros
- One-time purchase
- Feature-rich
- Good Exchange support
- Modern UI
✗ eM Client Cons
- Desktop only
- Free limited to 2 accounts
- Occasional sync issues
✓ Spark Pros
- Beautiful design
- AI writing assistant
- Smart inbox
- Team features
✗ Spark Cons
- Limited platform support
- Privacy concerns
- Some features behind paywall
The Verdict
eM Client is built for professionals and windows users, with a focus on email and calendar. Spark targets professionals and small teams and leads with smart-inbox and ai-writing.
On pricing, Spark is the clear winner for budget-conscious users — starting at $7.99/mo compared to $49.95/mo for eM Client. That $41.96/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Both tools are a solid fit for professionals — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.