ResourcesKnowledge Base

SMS Campaigns

Set up, manage, and send SMS campaigns using Mailkit.

Create a campaign

The creation of an SMS campaign does not differ significantly from that of an email campaigns. Only the Message type: SMS is selected when creating a new campaign. Then select Campaign type (Standard / Remarketing) and fill in its Name. You can assign recipient lists.

add campaign

SMS content editing

Unlike an email campaign, the SMS editor only contains a text box where you put the content of the message.

SMS editing

  • SMS messages longer than 160 characters will be split into multiple parts - Unless this option is ticked and your message exceeds 160 characters, it will be automatically truncated and only a partial message will be sent to the recipient..
  • Convert to ASCII – If diacritics is used in the message body, the system deletes it. If you want to use diacritics in an SMS message, consider significantly reducing the number of possible characters in one SMS message..

SMS preview

Next to the text field, the resulting SMS message is immediately displayed:

It is possible to use personalization in the content of SMS messages – either via merge tags or variables. See Content merge tags

It is also possible to send test SMS message. There is a charge for sending test SMS messages.




test message profilTest message profil – Used to personalize SMS messages, ie if the message contains fields with variables.



Instructions on how to opt-out

At At the end of each SMS message are automatically instructions added to how the recipient can opt-out/unsubscribe from future messages. The default wording of this information is: "Sign-out at" (XXXXXXXX is replaced with a unique code for each recipient when the message is sent).

This instruction for opt-out can be defined in the text of the SMS message by your own wording. This is done by typing your own text and placing the [CODE] placeholder where the unique code should be inserted. Keep in mind that the wording you use is important and should be simple enough for people to understand how to opt-out of messages.

Instructions for opt-out is a mandatory part of marketing SMS messages. Transactional messages are an exception.

List of SMS recipients

In order for the SMS campaign to be sent to the recipients, a valid number in international format (+1XXXYYYZZZ; +44XXXYYYZZZ; etc.) is required in the Mobile number field.

recipient detail

You can only import phone numbers (ie without e-mail addresses) to the recipient list. When importing just select "Only a list of mobile numbers without emails" during import.


NOTE: SMS messages can only be sent on weekdays from 9:00 AM to 5:00 PM. This restriction does not apply to transactional SMS messages.