---
title: "Mokwheel Factory Store case study: SendGrid email marketing"
description: 2,385 silent subscribers re-engaged in eight daily SendGrid batches from the store's own domain, three automated flows drafted, and HubSpot moved to Starter.
image: https://www.crmwired.com/hubfs/crmwired-site/case-study-mokwheel-og-1.jpeg
---
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[Case studies](https://www.crmwired.com/case-studies) / Mokwheel Factory Store
Email marketing on SendGrid
Campaign sent Oct 14 to 21, 2026
# A year of silent subscribers emailed in eight controlled batches, on a leaner stack
E-bike dealer · Portland, Oregon · Shopify and SendGrid
SendGridShopifySegmentsCloud DNSGA4Flows
**2,385**real subscribers after removing bots and role addresses
**8**daily batches of about 300
**9**emails drafted for three automated flows
The story
## What changed
Mokwheel Factory Store sells e-bikes from Portland, Oregon. The owner wanted to win back subscribers who had gone quiet and set up automated emails.
Industry
E-bike retail, Oregon
Timeline
Oct 2026
Email
SendGrid, with HubSpot on Starter
Also connected
Shopify, Google Cloud DNS, GA4
Before
Thousands of subscribers hadn't opened an email in a year. SendGrid link branding was failing because DNS records were missing, and the store was on a higher HubSpot tier than its marketing needed.
After
Marketing runs on SendGrid with branded links from the store's own domain. The silent list was cleaned and sent in daily batches, and HubSpot moves down to Starter.
How it works
## How the silent list was sent
Sending one large email to people who haven't opened in a year can hurt a sender's reputation. So the list was cleaned first and sent in small daily batches, with checks after each one.
01 · Trigger
Segment the non-openers
2,631 subscribers with no opens in a year.
02 · Check
Remove bots and role addresses
Leaves 2,385 real people. Existing customers are excluded from every send.
03 · Action
Split into eight lists
About 300 contacts each, one Single Send per list.
04 · Action
One batch a day
Oct 14 to 21 at 11:00 AM Central, from the store's own domain.
05 · Check
Daily health check
Bounces, spam reports, opens and clicks reviewed before the next batch goes.
06 · Result
Automated flows next
Welcome, rode but didn't buy, and after purchase, with UTM tags for GA4.
MMokwheel Portlandfrom the store's own domainA free Basic pack with any in-stockMokwheel, through Oct 31links branded ✓ONE BATCH A DAY · 11:00 AM CENTRAL309Oct 14294Oct 15293Oct 16299Oct 17297Oct 18305Oct 19294Oct 20294Oct 21
Illustration. No client data is shown.
The numbers
## Cleaning the list before sending
Subscribers in the re-engagement campaign
**Non-openers** no opens in a year**2,631**
**Real people** after removing bots and role addresses**2,385**
**Per daily batch** average of eight sends**about 300**
05001,0001,5002,0002,5003,000
Show as a table
| Item | Subscribers |
| --- | --- |
| Non-openers no opens in a year | 2,631 |
| Real people after removing bots and role addresses | 2,385 |
| Per daily batch average of eight sends | about 300 |
The eight batches held 309, 294, 293, 299, 297, 305, 294 and 294 contacts.
The build
## What I built
In the order the work was done.
SendGridShopifyCloud DNSGA4HubSpot
**Stack:** SendGrid Single Sends and segments, Google Cloud DNS, Shopify, Google Analytics 4, HubSpot Starter.
1. 01Checked SendGrid domain authentication and found link branding failing
2. 02Fixed the DNS records in Google Cloud DNS, so tracked links use the store's own domain
3. 03Sized the non-opener segment and removed bots and role addresses, leaving 2,385 real people
4. 04Eight batch lists of about 300 and one Single Send a day from Oct 14 to 21, with customers excluded
5. 05Daily health checks on bounces, spam reports, opens and clicks before each batch
6. 06Nine emails for three automated flows: welcome, rode but didn't buy, and after purchase, with UTM tags for GA4
7. 07HubSpot kept on the Starter plan, with marketing email on SendGrid
Result
The silent list went out in controlled batches from the store's own domain, and HubSpot moves down to the Starter plan.
**Next:** Switching on the three automated flows once SendGrid's automation plan is in place.
[Next case study · Mission Mobile Medical Executive reporting for a 42-state healthcare operation](https://www.crmwired.com/case-studies/mission-mobile-medical)
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