Email Blast Cost Calculator
Enter list size and send frequency, see the monthly cost across the major ESPs and a one-to-one sales tool. Surfaces the bulk-vs-sales-mail tradeoff in dollars.
| Mailchimp Standard | $175 |
| SendGrid Essentials | $20 |
| Postmark | $15.00 |
| Amazon SES | $0.00 |
| ConvertKit | $119 |
| Outsolvi (5 reps, billed yearly) | $100 |
For a genuine bulk blast to 50,000 recipients, an ESP is the right tool and the cheapest row above is the honest answer. Outsolvi is not a bulk sender.
The row is there for the comparison people usually want: if those 50,000 recipients are actually prospects your reps mail one at a time, the cost follows headcount instead of volume, and you get confidence-scored opens rather than aggregate ESP stats. Switch the send pattern above to see that side.
You ran the math. Outsolvi makes it real.
Calculators tell you what the number should be. Outsolvi tells you what your number actually is. confidence-scored opens, real reply sentiment, live deal-level signal across Outlook and Gmail. From $7/user/mo yearly, 14-day free trial.
See it on your own inboxLooks up published 2026 pricing tiers for Mailchimp Standard, SendGrid Essentials, Postmark, Amazon SES, and ConvertKit, then multiplies by your stated send volume. Adds Outsolvi as a comparison only when send pattern is one-to-one rather than blast.
When deciding whether your team needs a marketing ESP, a transactional API, or a one-to-one sales tracker. The wrong tool for the send pattern wastes 5-10× the budget.
FAQ
Why is Outsolvi cheaper than ESPs for outbound sales?+
Outsolvi prices per seat, not per email. A 5-rep team sending 200 emails/day each pays a flat $35-$70/month yearly; SendGrid Essentials for 100k/month is $20 plus per-email overage. Different math for different patterns.
When does an ESP beat per-seat pricing?+
When the send pattern is true blast (newsletter, product launch, transactional). Per-seat pricing only wins when every send is human-composed and tracked individually.
Keep going
Articles, glossary entries, and other tools on the same topic.
Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change. new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.