RelationCity Alternatives

LINK Mobility is Europe's leading provider within mobile communications, specialising in mobile SMS messaging, digital services and multi-channel conversational communication.

Sinch is a powerful voice and messaging SDK that lets you bring your apps to life with VoIP and...

Email marketing software made for cold email marketing professionals. Using advanced AI to generate email personalization in seconds

Try for free paid Free Trial $99.0 / Monthly (Starter)

Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.

ClickSend builds communication software and tools for businesses. We offer SMS, MMS, Voice, Email, Online Mail and even Fax. All accessed via our Dashboard, app, flexible API or integrations.

Open Source Free Trial

Brings voice and messaging to your web and mobile applications.

Open Source

A2P messaging platform for enterprises, resellers & mobile operators with global network coverage.

SMS messaging service suitable for enterprise, school and business SMS uses. Reliable and fast SMS delivery using SMS APIs and solutions. SMS Gateway providing SMPP, HTTP, Web Service and SMTP APIs plus AlertBroadcast, EmailSMS and WebSMS.

Send better emails, get better results

freemium $15.0 / Monthly (Essential 2500 Contacts Plan)

Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.

TeleSign offers end-to-end communications Platform as a Service.

Vonage is a cloud-based all-in-one VoIP software solution designed for multiple industries such as accounting, healthcare, finance and marketing etc.

Global cloud SMS gateway platform with advanced routing, reliability and capacity.

freemium €0.15 (per 1000 SMS)

Nexmo is a simple two way SMS API with global reach and wholesale rates