TestSubject vs Touchstone: Which Should You Choose in 2026?
Both prices below were read from each vendor's own pricing page on the date shown.
Pricing side by side
| Plan | TestSubject | Touchstone |
|---|---|---|
| tier 1 | Free — Unlimited mobile inbox preview simulations across all popular mobile screen sizes | $69/mo — Up to 50 subject line simulations/mo, industry benchmark comparisons |
| tier 2 | — | $149/mo — Unlimited simulations, custom brand database calibration, team access |
| tier 3 | — | $399/mo — Custom ESP integrations, multi-brand workspaces, dedicated deliverability advisor |
read from both vendors' pricing pages · 22 Aug 2026 · how we verify
Choose TestSubject if
- Email designers checking mobile subject line line breaks and truncation
- Marketing teams ensuring sender names fit mobile inbox displays
Choose Touchstone if
- Email marketing managers optimizing broadcast campaign open rates
- Agencies testing subject line hypotheses without risking client list health
Where each one disappoints
TestSubject
- Automated algorithmic ad budget bidding
Touchstone
- Cold outbound telephony dialer operations
Compiled by Stepan Noianov from both vendors' own sites. Something wrong? Report an inaccuracy.