Sponsor comparison
Mostly Metrics vs American Express
Newsletter sponsorship activity, audience reach, and ad formats — side by side.
Sponsorship breakdown
Category
Mostly Metrics
American Express
Industry
Marketing
Finance
Newsletter
NEW ECONOMIES
50K subscribers
The Sports Stack
33K subscribers
Audience reach
50K subs
33K subs
Ad format
Sponsored by
Affiliate Partnership
Referral link for the American Express Platinum Card with enhanced welcome offer…
Last recorded
—
January 2026
Ad copy examples
Mostly Metrics
No ad copy available
American Express
Referral link for the American Express Platinum Card with enhanced welcome offer of 70,000 Membership Rewards points after spending £6,000 in first 3 months
More comparisons
Similar sponsors
Get the full sponsor picture
Contact details, decision makers, email addresses, and complete sponsorship history for both brands.
Start free — no card needed