Short Message Service

Short Message Service

160 characters is all you need

Request Trial

160 characters is all you need

Request Trial

Bulk SMS Services

On average, it takes just 7 minutes to launch an SMS campaign with Sendsei from start to finish. All you need to do is upload your contact list and come up with a short and sweet message - ideally under 160 characters.

Bulk SMS Services

On average, it takes just 7mins to launch a campaign with Sendsei from start to finish. All you need is 160 characters.

Multiple Sender ID Options

You have multiple Sender ID options such as Shared Virtual Number, Dedicated Virtual Number, Shortcode, or a Custom Sender ID. Choosing the right number is important for building your mobile brand.

Custom Variables

Send more relevant messages by pulling custom data straight from your database. Commonly used variables include: customer names, purchase history, payment due dates, and product pricing.

SMS Keywords

Choose a UTF-8 character, emoji, or a standard SMS keyword, then set an autoresponder trigger once someone texts into your number. Multiple keywords can run at once.

Unique Link Tracking

Track campaign performance with the help of our unique link tracking system. Cross-reference your SMS statistics with any additional internal analytics.

UTF-8 Compatibility

Special UTF-8 characters allow you to send text messages in over 650+ languages. This also includes any unicode compatible emoji or symbol.

Custom Opt-out

All messages unless otherwise specified in the spam laws, must include an opt-out. Sendsei gives you the option to try multiple opt-out options including custom URL opt-outs.

Industry Vertical Samples

SMS for Marketing

Make a splash with a quick flash sale


  • On average, it takes less than 5 minutes for your message recipient to receive an SMS.
  • Give your marketing campaigns a quick boost, whether it be a flash sale or a speciality promotion with a bulk SMS blast.
  • Schedule messages, and manage traffic going to your shop/website with split sending.
  • Add an extra layer of exclusivity to your SMS marketing campaigns by segmenting your contact lists. This allows you to send more relevant messages to your audience.
  • Save your most effective messages as templates to launch future campaigns even faster.

* Click on the tabs above to see more SMS vertical samples

SMS for Reminders

Say goodbye to missed appointments


  • Schedule SMS reminders and allow your customers to confirm their appointments or reservations with the help of SMS keywords
  • Integrate SMS reminders into your pre-existing applications via our SMS API or 1,500+ integrations
  • Customise your auto responses

* Click on the tabs above to see more SMS vertical samples

SMS for Feedback

Improve your customer experience


  • Ask a quick question or create a multi-chain SMS survey to start generating feedback
  • Shorten your questions to make providing feedback more enjoyable for your customers
  • Make it easy for your customers to give feedback by splitting up your questions into multiple SMS keyword chains

* Click on the tabs above to see more SMS vertical samples

SMS for Notifications

Send an alert, and trigger an action as fast as possible


  • Use SMS notification alerts as a focal point to generate immediate responses
  • Give your message recipients a quick snapshot of an urgent situation to prompt an action
  • Schedule messages, and manage traffic going to your shop/website with split sending.
  • Set SMS alerts to trigger automatically for important events such as: low balances, verifications, trial expiry, invoices, due dates, website updates, server status, account updates, and fraudulent activity.

* Click on the tabs above to see more SMS vertical samples

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SMS for Marketing

Make a splash with a quick flash sale

SMS for Reminders

Say goodbye to missed appointments

SMS for Feedback

Improve your customer experience

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