BADREP / MUSCLE BOOSTER EMAILS

How Muscle Booster writes email.

34 emails classified across 9 months, all sent through Reteno (eSputnik). Tracked since Sep 2024. Every hook, framework, offer type and CTA — on the record.

Muscle Booster is one of 339 brands tracked in the BadRep vault, classified under Health & Fitness. We've indexed 34 emails from Muscle Booster since September 2024, sent at a cadence of roughly 3.8/month through Reteno (eSputnik). Their program leans on Promotional sends with Bold Claim hooks; below is everything BadRep has noticed about how they actually write to their list.

WHAT WE NOTICED
  • Steady cadence at 3.8 emails/month over 9 tracked months.
  • Promotional is the dominant program — 35% of all sends (12 of 34 emails).
  • Hook of choice: "Bold Claim" — opens 53% of sends.
  • Subject lines average 44 characters, in the sweet spot for mobile preview (~30–50 chars).
  • Leans on emoji in subject lines — 24% include one, vs catalog median of 7%.
  • Promotionally heavy: 91% of emails carry an offer, with "% Off" the most common format.
THE PATTERNS

What Muscle Booster does on repeat.

3.8
emails/mo
9 active months
0%
personalized
merge tags + dynamic content
24%
with emoji 📨
avg subject: 44 chars
0%
with animated GIFs
motion in the inbox

Most-used email types

  1. 01Promotional35%
  2. 02Upsell / Cross-sell21%
  3. 03Abandoned Cart18%
  4. 04Seasonal / Holiday12%
  5. 05Re-engagement6%

Most-used hook types

  1. 01Bold Claim53%
  2. 02Direct Offer41%
  3. 03Question3%
SEND CADENCE

The last 6 months of Muscle Booster.

Latest send tracked: 32 days ago. Peak month was Feb 26 with 13 emails.

0
Nov 25
0
Dec 25
0
Jan 26
13
Feb 26
8
Mar 26
2
Apr 26
COMMONLY ASKED

Muscle Booster email FAQ.

What email platform (ESP) does Muscle Booster use?
Muscle Booster sends through Reteno (eSputnik), based on 34 emails analyzed by BadRep. ESP signals come from sending infrastructure (return path, DKIM, List-Unsubscribe headers) — not self-reported.
How often does Muscle Booster send marketing emails?
Muscle Booster sends roughly 3.8 marketing emails per month, averaged across 9 months of tracked activity. Peak send month was February 2026 with 13 emails.
What types of emails does Muscle Booster send?
Muscle Booster's most-used email programs are Promotional (35%), Upsell / Cross-sell (21%), Abandoned Cart (18%). The full classification covers 5 distinct email types across BadRep's taxonomy.
What hook types does Muscle Booster use to open emails?
Top three hook types in Muscle Booster's subject-line + opener combinations: Bold Claim (53%), Direct Offer (41%), Question (3%). BadRep classifies every email's opening hook to make stylistic patterns searchable.
How long are Muscle Booster's subject lines?
Average subject-line length for Muscle Booster is 44 characters across 34 emails. 24% include at least one emoji.
What offers does Muscle Booster run in email?
91% of Muscle Booster's tracked emails carry a promotional offer. The most-used offer format is "% Off".
What category is Muscle Booster in?
BadRep classifies Muscle Booster under Health & Fitness. Niche tagging reflects the audience signal in the emails themselves, not the brand's own positioning copy.
Where do these Muscle Booster email examples come from?
Every email in this analysis was received, classified, and indexed by BadRep — a searchable email-intelligence vault. Subscribers can view full screenshots, raw HTML, and 20+ filter dimensions per email.

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