How to share a login that uses SMS to How to share a login that uses SMS 2FA

We are a group of hobbyists managing a mailing list. Mailchimp insists on SMS authentication to login now which has scuppered our plans to spread the workload.

Are there any free / cheap services that would receive a text messages and forward it by email to several people? If not, is there an alternative way to deal with this situation? We’re not necessarily attached to mail chimp but delivery is important.