The "From" name that is being used in my campaigns has an apostrophe in it, which is encoded by check_plain() in mailchimp_campaign_campaign_form_submit (line 291). The end result is that an end user sees the 's string in their inbox.
Add $settings to the drupal_alter() that is called in mailchimp_campaign_save_campaign, line 306, so the from_name can be altered before before saved to MailChimp.
Closed: won't fix
5.0
Campaign Module
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Thanks for submitting this ticket — and sorry we didn’t get back to you about it sooner. We are cleaning up old issues and issue for old versions and are going to close this one. If this issue is still relevant for you, please re-open it and update the “Version” field, and include any updates to the behavior you are seeing.With a smaller issue queue, we’ll have an easier time getting back to you.