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Sellizer
What Sellizer is
Sellizer is web-based software for sending sales proposals and monitoring what happens after delivery. It records proposal openings, replies, and attachment activity, and can provide real-time alerts. Gmail and Outlook are supported email clients, while CRM synchronization connects proposal activity with customer records. The Solo plan allows 100 proposals per month, 100 SMS notifications for first openings, unlimited proposal-opening email notifications, CRM and email integrations, automatic follow-ups, and full API access. Team raises the proposal and first-opening SMS allowances to 400 each and adds sales team management and webhooks, while retaining unlimited email notifications and API access. Enterprise uses custom pricing for companies with more than 10 sales team members and includes customized functions and dedicated support. Sellizer was founded in 2018 and is headquartered in Rzeszów, Poland. It is paid software with a 14-day trial and no free plan.
Who it suits
Sellizer suits sales teams that send proposals and need opening, reply, and attachment tracking. Teams needing CRM links, follow-ups, alerts, or API access can choose plans based on their proposal volume.
What it does well
- Tracks proposal openings, replies, and attachments
- Provides real-time alerts
- Supports Gmail and Outlook
- Offers CRM synchronization
- Includes API access on listed plans
What to know first
- No free plan
- Web platform only
- Enterprise uses custom pricing
- Solo limited to 100 proposals monthly
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Solo | 100 proposals per month · 100 SMS notifications about the first opening of a proposal · Unlimited email notifications for proposal openings · CRM and email integrations · Automatic follow-ups · Full API access | On request |
| Team | 400 proposals per month · 400 SMS notifications about the first opening of a proposal · Unlimited email notifications for proposal openings · Sales team management · Webhooks · Full API access | On request |
| Enterprise | Custom pricing · For companies with over 10 sales team members · Customized available functions · Dedicated support | On request |
As sellizer.com lists them, read 19 Sept 2026. The maker's own page has the final word.
Verdict
Sellizer focuses on proposal follow-up, with tracking, alerts, CRM synchronization, and integrations. Its plan limits and paid model should be checked against the team’s monthly proposal volume.
Facts from Sellizer's own pages
- Founded
- 2018 · sellizer.com, 4 Oct 2026
- Headquarters
- Rzeszów, Poland · sellizer.com, 4 Oct 2026
Where Sellizer stands on Freedom251
- Sales Email Tracking Software#27 of 27