What if I don’t have an email address for a contact?
If one of your contacts has a phone number but does not have an email address, a fictitious email address will be created for them using the following formula: [PHONE_NUMBER]@mailin-sms.com. For example, the fictitious address for the phone number +13604529038 would be firstname.lastname@example.org. If you later receive an email address for an existing contact, you can always replace the fictitious email address with the real one.
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SMS contacts with no email address will be blocklisted from receiving your emails and appear in red. No email will be sent to these contacts and you will not be charged.