Whatso is the only software to have an Anti-Blocking feature for smooth and fast message sending. Blast messages to all contacts including contacts not saved in your address book. Send custom messages with greetings such as the receiver's name. Import all contact details from CSV, TXT files, or by copying and pasting.
An endless library of dazzling stock content as far as the eye can see
$19 / Monthly
User.com is a full-stack marketing automation software for all your messaging and relationships with customers
$$249.00/month / per user/month
Build any communications experience, on any channel with Twilio.
$$0.0085 per min / Lifetime
MessageBird is a software company based in Netherlands that was founded in 2011
$50 / Monthly
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